Functional Communication Training: A Practitioner's Guide to FCT for BCBAs, RBTs, and School Teams

What FCT actually is

FCT is a differential reinforcement of alternative behavior (DRA) procedure in which the alternative is a communicative response — most often a mand — matched to the function an FBA, brief FA, IISCA, or TBFA has identified Ghaemmaghami et al. (2021) Corr et al. (2025). Problem behavior occurs because it produces a reinforcer (attention, escape, tangible, or, less often in FCT-eligible cases, automatic stimulation); teaching a functional communication response (FCR) that produces the same reinforcer makes the FCR a more efficient way to contact it, particularly when problem behavior is simultaneously placed on extinction Owen et al. (2020). Ghaemmaghami, Hanley, and Jessel's efficacy-to-effectiveness review concluded FCT meets standards as an efficacious treatment but that its status as an evidence-based practice is incomplete: most studies report tightly controlled, short-term outcomes rather than long-term effectiveness in everyday settings, so practitioners need to actively program for maintenance, generalization, and social validity rather than assuming durability follows acquisition Ghaemmaghami et al. (2021).

From FA to FCT: the modern pipeline

The cleanest current pipeline is FBA (records review, open-ended interview, ABC observation) → brief FA, IISCA, or TBFA → function-based FCT, with assessment intensity calibrated to risk and ambiguity. The IISCA has had the largest impact on how FCT is delivered in 2026 practice. In a two-step validation across five children aged 3–5 with autism or developmental disability referred for severe problem behavior, the IISCA reliably identified socially mediated functions and handed off directly to a multistep FCT package: a low-effort omnibus FCR was reinforced first; after independent emission reached criterion, the contingency shifted to require a more complex, polite mand — yielding rapid acquisition and large reductions in problem behavior, plus a probe that withheld the FCR consequence to verify continued functional necessity (Jessel et al., 2024). Fruchtman and colleagues replicated this in three preschoolers within a skill-based treatment framework using errorless prompt fading and ≤30-second reinforcement intervals; brief reversals confirmed functional control of the taught FCR Fruchtman et al. (2025). An interview-driven synthesized FA can hand off to FCT inside roughly two clinic visits, with the FCR verified by reversal probes that take minutes.

The mega-review of school-based FCT — synthesizing 17 prior reviews — adds a nuance: positive FCT outcomes occurred regardless of which FBA procedure was used Corr et al. (2025). Procedural choice hinges more on implementer skill, fidelity, and resources than on assessment-format ideology — match the assessment format to the staff who will deliver the FCT Corr et al. (2025).

Mand training as the core mechanism

The communicative response in FCT is, technically, a mand — a request controlled by the relevant motivating operation (deprivation, aversive task, removal of attention) and reinforced by the specific consequence the learner is signaling for (McCammon et al., 2024). McCammon, Wolfe, and Check's scoping review of 61 mand-training experiments (2000–2023, explicitly excluding studies labeled "FCT") catalogued the same environmental variables that show up across the FCT literature — preference assessment, topography selection, EO/SD arrangement, prompt fading, reinforcer specification — arguing that proactive mand training is the same architecture as FCT applied earlier (McCammon et al., 2024). Frampton and colleagues' 2024 tutorial adds an underappreciated detail: before any vocal or signed mand, an indicating response — a clear, observable motor response the learner can already emit and adults can reinforce in under 2 seconds — should be established first, because reinforcement of a fragile or ambiguous topography produces inconsistent contingency contact and quietly extinguishes the response you are trying to build (Frampton et al., 2024).

Topography selection: vocal speech, signs, picture cards, AAC

The decision about what the FCR looks like is one of the most consequential choices in an FCT program. Randall and colleagues' translational comparison of card versus vocal initial FCRs found that beginning with a card response yielded lower levels of target destructive responding than starting vocal, and they validated a structured procedure for transitioning to a previously unlearned vocal FCR using prompt fading, response delay, and reinforcement adjustments — preserving low rates of problem behavior across the transition Randall et al. (2021). "Vocal first" is not a default to defend; for severe destructive topographies, a card or low-effort indicating response can be the safer starting point.

When the program does not pre-determine topography, learner preference matters. Matter and Zarcone compared FCT delivered with an existing versus a brand-new mand; both produced equivalently low problem behavior, but children consistently preferred using the novel response when given a concurrent-schedule probe Matter & Zarcone (2017). A new FCR is not a concession — it has no extinction history and can be less prone to resurgence.

For learners using picture-exchange or AAC, FCT translates cleanly. Ampuero, Kinkade, and Ratkos used a 30-minute BST package — instruction, modeling, rehearsal, feedback — to teach three preservice educators with no prior special-education experience to implement an icon-exchange (PECS-like) FCR system at 100% accuracy, with gains maintained at four-week follow-up Ampuero et al. (2025).

Extinction, no-extinction FCT, and concurrent schedules

The textbook FCT package is FCR-on-rich-schedule plus problem-behavior-on-extinction. Owen and colleagues showed why extinction is rarely optional when the function is caregiver compliance: across three preschoolers, reversing whether the caregiver complied with the participant's mands produced reliable changes in destructive behavior, confirming mand-compliance as the operative reinforcer. FCT must be integrated with response-blocking or non-compliance for the destructive mand topography, with caregivers warned that withholding compliance will increase destructive behavior before it decreases Owen et al. (2020). But extinction is not always feasible — particularly in classrooms where teachers cannot reliably ignore severe behavior. Torelli and Lloyd's school evaluation of FCT without extinction tested concurrent reinforcement schedules for two elementary students with multiply maintained behavior; mands increased for both, problem behavior decreased for one, and outcomes were less robust than full-extinction FCT. Concurrent-schedule FCT should be paired with antecedent strategies and reserved for cases where extinction is genuinely impractical rather than merely inconvenient Torelli & Lloyd (2024).

Schedule thinning: delay tolerance, multiple schedules, chained schedules

The most failure-prone phase of FCT is schedule thinning. After an FCR is reinforced on a dense FR-1 schedule, the natural environment cannot sustain that density. Multiple schedules are the dominant thinning method: a discriminative stimulus signals a rich (S^D) period during which FCRs are reinforced, alternated with a lean (S^Δ) period, with S^Δ progressively expanding. Shamlian and colleagues compared multiple-schedule FCT with naturally-occurring versus therapist-arranged SDs across six children with social-negative-reinforcement-maintained destructive behavior; naturally-occurring SDs produced faster initial acquisition while therapist-arranged SDs (colored cards or leis) yielded stronger generalization. Begin with naturally-occurring cues, then layer in therapist-arranged stimuli before generalization Shamlian et al. (2016). Yassa and colleagues showed across ten trainees that brief protocol review produces accurate mult-FCT implementation, but most fidelity errors clustered around schedule-challenge and SD-challenge moments — supervise schedule transitions first, not last Yassa et al. (2024).

Chained schedules — FCR → brief work or wait segment → reinforcer — are the natural extension for escape-maintained behavior tied to demands. Rivera and colleagues demonstrated parent-implemented chained-schedule FCT for a 6-year-old boy whose escape-maintained challenging behavior occurred during trash disposal; teaching a request for help, paired with a chained schedule (small break + access to help → routine completion), produced near-zero rates of problem behavior while the routine was completed Rivera et al. (2023). Gerow and colleagues compared two thinning approaches for two 6- and 7-year-olds with autism and escape-maintained behavior: demand fading combined with dense-to-lean reinforcement thinning versus demand fading with a dense schedule held constant. The combined approach produced faster reductions and more durable maintenance; keeping reinforcement dense while only fading demands risked post-thinning resurgence Gerow et al. (2020). Do not treat "thin reinforcement" and "fade demands" as separate problems to solve sequentially — interleave them.

Establishing-operation exposure and extinction bursts

Fisher and colleagues compared brief versus extended pre-session EO exposure during FCT for three children aged 5–12 with severe destructive behavior. Extended EO exposure produced an extinction burst in five of six applications; brief EO exposure produced none, while both ultimately reduced problem behavior. Pre-session conditions practitioners often treat as ambient — how long the learner has been in demand context, deprived of attention — are programmable variables that change session safety. Schedule FCT after short EO exposure, monitor for bursts after long deprivation, and program gradual EO-duration increases only after the FCR is well established Fisher et al. (2018).

Multiply controlled behavior and isolated-EO transfer

A major failure mode the corpus is now explicit about: FCT trained under one set of establishing operations does not automatically generalize to other EO contexts when behavior is multiply controlled. Tsami and Lerman delivered parent-implemented telehealth FCT to five children aged 3–6 with autism whose problem behavior was maintained by both tangible access and escape from demands; parents reached 99% procedural integrity. After FCT was taught under combined EOs, problem behavior re-emerged when children were tested in isolated demand-only or tangible-only settings — additional sessions teaching and thinning the FCR in each isolated EO were required for durable effects Tsami & Lerman (2020). Boyle and colleagues showed the inverse strategy works: teaching two topographically distinct FCRs (one for attention, one for tangible) within unified FCT sessions yielded stimulus-controlled use of each Boyle et al. (2019). Weber and colleagues quantified the cost across 95 consecutive clinic FCT-plus-extinction cases: single-function behavior responded better than multiply maintained behavior, and the disadvantage was most pronounced for escape-component cases Weber et al. (2024). The clinical sequence: determine whether behavior is single- or multiply-controlled at the assessment stage; if multiply controlled, decide whether to teach a single omnibus FCR or differentiated FCRs; probe each isolated EO context before discharge; expect escape-component cases to need more intensive thinning and supplementary contingencies Tsami & Lerman (2020) Boyle et al. (2019) Weber et al. (2024).

Treatment integrity and mediator training

FCT only works if the people delivering it deliver it correctly. Artman-Meeker and colleagues evaluated brief in-vivo "bug-in-ear" (BIE) coaching across eight pre-service behavior analysts implementing FCT in inclusive preschool classrooms; trainees' fidelity rose from 53% baseline to 85% during BIE and 90% across follow-up probes, just from live prompts during the session Artman-Meeker et al. (2017). Anderson, Brock, and Shawbitz used BST with three paraeducators paired with students with IDD and AAC use, and rapidly increased both the number and diversity (mands, tacts, intraverbals) of communication opportunities offered during academic lessons — extending FCT-style functional communication beyond simple requesting Anderson et al. (2025). Ólafsdóttir, Sveinbjörnsdóttir, and Gunnarsson tested a four-tier pyramidal BST cascade — one expert trains six staff, each of whom trains six more — across 24 human-service staff, with each tier reaching ≥90% accuracy across three consecutive FCT sessions before training the next; the cascade succeeded under controlled conditions, suggesting agencies short on expert trainers can scale FCT capacity quickly when group training is impractical (Ólafsdóttir et al., 2025). Mediator training extends to caregivers: Bondy, Horton, and Frost's home-FCT guidance identifies nine pivotal communicative operants (request, refusal, answer, etc.) parents can teach in daily routines, arguing that arranging naturalistic opportunities across meals, play, and routine tasks yields better maintenance than leaving instruction to clinic sessions Bondy et al. (2020).

Telehealth-delivered FCT

Telehealth FCT is no longer a pandemic adaptation; it is a real evidence base. Tomlinson, Gore, and McGill's systematic review of telehealth ABA training included nine FCT studies in which parents were trained over live video to prompt and reinforce FCRs; across these studies, parents learned to implement FCT, problem behavior decreased, and communicative acts increased in daily routines, with outcomes broadly comparable to in-person delivery — though the review noted reliance on non-randomized SCED and lack of head-to-head comparisons Tomlinson et al. (2018). Tsami and Lerman's parent-telehealth FCT for multiply controlled behavior — five children, mothers reaching 99% procedural integrity over video coaching — is the representative example, with the caveat noted above about isolated-EO probes before discharge Tsami & Lerman (2020). For agencies in regions with limited BCBA density, the practical setup is asynchronous didactic content, brief video review of one or two role-plays, then live video coaching during the first several treatment sessions, with response-effort guidelines made explicit before the parent runs a session alone Tomlinson et al. (2018).

Bilingual and culturally responsive FCT

Banerjee and colleagues' bilingual FCT study with two Spanish-English bilingual children with ASD made a protocol-changing finding: teaching the mand only in one language did not produce untrained-language mands in the other context; explicit dual-language FCT plus a "message-repair" procedure (the child re-phrases in the other language if the first attempt fails) was required to maintain low problem behavior across home (Spanish) and school (English) Banerjee et al. (2022). Waits and Gilroy extended this to AAC users with three bilingual preschoolers, showing simultaneous bilingual mand training plus a language-specific discrimination procedure (reinforce the matching-language mand, not the cross-language one) allowed bilingual AAC users to discriminate which language to use depending on the partner — without provoking resurgence (Waits & Gilroy, 2025). For programs serving bilingual families, single-language FCT is insufficient.

FCT for vocal topographies that aren't "destructive" in the classic sense

Thakore and Kettering applied FCT to repetitive verbal behavior — repetitive mands maintained by adult compliance — in two boys aged 4–5 with ASD; an FA showed stereotyped mands were reinforced by parent compliance, and FCT in which a more appropriate FCR was reinforced on FR-1 while RVB was placed on extinction produced high rates of the FCR and near-zero rates of the repetitive mands (Thakore & Kettering, 2025). The "problem behavior" was already vocal and already a mand — but had become dysfunctional. FCT replaced one mand topography with a more socially appropriate one, with the same reinforcer.

The under-utilization gap in EBD school services

Pollack and colleagues' PRISMA review of 62 function-based intervention studies for K-12 students identified with or at risk for emotional/behavioral disorders found that only about one-third of those interventions taught functional communication skills, despite communication training being a core trauma-informed replacement skill (Pollack et al., 2024). When an FBA-derived BIP for an EBD student does not include FCT, you are probably below the field's standard of care, not above it.

The FCT evidence base is dense at the single-subject layer, supported by systematic reviews, with a small comparative-effectiveness signal and almost no large RCT data — typical for behavior-reduction procedures, and explicit in Ghaemmaghami and colleagues' efficacy-to-effectiveness review Ghaemmaghami et al. (2021).

Systematic and narrative reviews. Corr, Rispoli, and Welker's mega-review of 17 prior reviews of school FCT anchors the claim that FCT outcomes do not depend on which FBA procedure precedes them in school settings Corr et al. (2025). Ghaemmaghami, Hanley, and Jessel evaluate FCT against APA criteria and conclude evidence supports efficacy but that maintenance, generalization, and effectiveness in everyday settings remain under-documented Ghaemmaghami et al. (2021). Tomlinson, Gore, and McGill's systematic review includes nine telehealth FCT studies, all showing successful parent-implemented FCT via video coaching Tomlinson et al. (2018). McCammon, Wolfe, and Check's scoping review of 61 mand-training experiments documents that the same environmental variables drive both proactive mand training and reactive FCT (McCammon et al., 2024). Pollack and colleagues' PRISMA review of 62 EBD intervention studies establishes the under-utilization gap (Pollack et al., 2024).

Comparative effectiveness and quasi-experimental. Ólafsdóttir and colleagues' 24-staff pyramidal BST study is the closest the corpus comes to a controlled group demonstration of FCT training effectiveness, with a 90% accuracy mastery criterion held across all four cascade tiers, though training used a confederate student (Ólafsdóttir et al., 2025). Weber and colleagues' retrospective analysis of 95 consecutive clinic FCT-plus-extinction cases is the largest case series on FCT outcome moderators Weber et al. (2024).

Single-subject experimental designs. Where most FCT evidence lives. The IISCA→FCT pipeline rests on Jessel and colleagues' five-child two-step validation (Jessel et al., 2024) and Fruchtman and colleagues' three-preschooler SBT replication Fruchtman et al. (2025). Schedule thinning: Shamlian and colleagues (n=6) Shamlian et al. (2016), Gerow and colleagues (n=2) Gerow et al. (2020), Rivera and colleagues (n=1) Rivera et al. (2023). Topography selection: Randall and colleagues' card-versus-vocal experiments Randall et al. (2021) and Matter and Zarcone's existing-versus-novel comparison (n=2) Matter & Zarcone (2017). Indicating-response: Frampton and colleagues' tutorial (Frampton et al., 2024). Multiple-control transfer: Tsami and Lerman (n=5) Tsami & Lerman (2020) and Boyle and colleagues (n=1) Boyle et al. (2019). EO-exposure: Fisher and colleagues (n=3) Fisher et al. (2018). Destructive-mand-compliance: Owen and colleagues (n=3) Owen et al. (2020). RVB-as-mand: Thakore and Kettering (n=2) (Thakore & Kettering, 2025). Bilingual FCT: Banerjee and colleagues (n=2) Banerjee et al. (2022) and Waits and Gilroy (n=3) (Waits & Gilroy, 2025). School FCT-without-extinction: Torelli and Lloyd (n=2) Torelli & Lloyd (2024).

Training and treatment-integrity. Artman-Meeker and colleagues (n=8) on bug-in-ear coaching Artman-Meeker et al. (2017), Anderson and colleagues (n=3) on paraeducator BST Anderson et al. (2025), Yassa and colleagues (n=10) on mult-FCT brief-protocol training Yassa et al. (2024), and Ampuero and colleagues (n=3) on icon-exchange BST Ampuero et al. (2025). Togashi's CBI-plus-telehealth-BST study, focused on TBFA, supplies the assessment-skill foundation (Togashi, 2025).

Methodology and conceptual. Bondy, Horton, and Frost's home-FCT guidance Bondy et al. (2020) and Frampton and colleagues' indicating-response tutorial (Frampton et al., 2024) are practitioner-facing anchors, weaker as outcome evidence.

Bottom line. Convergent evidence is strong for the operational claims this page makes. It is weaker for any claim of durable, long-term, real-world effectiveness across heterogeneous populations — the literature is honest that this gap is real and active Ghaemmaghami et al. (2021).

A defensible FCT decision sequence, drawn directly from the corpus:

1. Confirm function via FBA / brief FA / IISCA / TBFA. IISCA when one synthesized test/control comparison can answer the question in two clinic visits (Jessel et al., 2024); TBFA when assessment must be embedded in classroom instruction; brief FA when multi-condition logic is needed but prolonged conditions are infeasible. In schools, FCT outcomes do not appear to depend on format — let staff capacity drive the choice Corr et al. (2025).
2. Determine whether behavior is single- or multiply-controlled. Multiply maintained behavior — especially with an escape component — predicts weaker FCT-plus-extinction outcomes; plan differentiated FCRs, isolated-EO probes, and supplementary contingencies if multiple functions are confirmed Weber et al. (2024) Tsami & Lerman (2020).
3. Establish an indicating response, then select FCR topography by effort and risk. A clear motor response under 2 seconds first (Frampton et al., 2024). For severe destructive topographies, consider starting with a card FCR and transitioning to vocal later Randall et al. (2021). When existing mands co-exist with problem behavior, a brand-new FCR may be equally effective, learner-preferred, and less prone to resurgence Matter & Zarcone (2017). For AAC, a 30-minute BST package installs icon-exchange in implementers Ampuero et al. (2025).
4. Verify FCR effort < problem-behavior effort. The single most important design check Tomlinson et al. (2018).
5. Decide on extinction or concurrent schedule. Extinction is the textbook companion to FCT, and for cases where the function is caregiver compliance it is essentially required Owen et al. (2020). When extinction is impractical, concurrent schedules can move manding rates but should be paired with antecedent strategies and monitored closely Torelli & Lloyd (2024).
6. Manage pre-session EO exposure — schedule FCT after short EO exposure to minimize extinction bursts; program gradual EO-duration increases only after the FCR is well established Fisher et al. (2018).
7. Begin schedule thinning with naturally-occurring SDs, then add therapist-arranged SDs before generalization Shamlian et al. (2016). For escape-maintained behavior, combine demand fading with dense-to-lean reinforcement thinning Gerow et al. (2020); use chained schedules (FCR → brief work/wait → reinforcer) to give learners a way to recruit assistance instead of escape Rivera et al. (2023).
8. Probe isolated EO contexts before discharge. If FCT was trained under combined EOs, expect to teach and thin separately in each isolated EO Tsami & Lerman (2020). For differentiated FCRs, run brief stimulus-control probes to verify each contacts only its intended reinforcer Boyle et al. (2019).
9. For bilingual learners, train FCRs in both languages with message-repair from day one Banerjee et al. (2022) (Waits & Gilroy, 2025).
10. Train mediators with BST plus on-the-job coaching. A 30-minute BST package installs the basic skill; bug-in-ear or brief telehealth coaching during early sessions catches the schedule-transition errors that distinguish trained from drifted Artman-Meeker et al. (2017) Yassa et al. (2024). When expert capacity is the limit, a four-tier pyramidal BST cascade scales delivery (Ólafsdóttir et al., 2025).
11. Choose FCT vs DR-alone vs token economy by function and structure. FCT is preferred whenever an FBA-identified socially mediated function exists and the learner can acquire a low-effort FCR. DR-alone (DRO/DRI) fits automatically reinforced behavior where a competing communicative response is not the natural alternative. Token economies layer on top of FCT to thin reinforcement at the system level — they are not a replacement for the FCR. Layer FCT with antecedent strategies (choice, instructional modifications, NCR) when extinction is impractical Torelli & Lloyd (2024).

Clinic and outpatient

Outpatient clinics are where the IISCA→FCT pipeline has been most rigorously validated: open interview → synthesized test/control → multistep FCT → reversal probe, with rapid acquisition across roughly two clinic visits (Jessel et al., 2024) Fruchtman et al. (2025). Boyle and colleagues showed differentiated FCRs can be programmed in unified sessions and develop appropriate stimulus control even when the original FA used synthesized contingencies, though the study used four therapists Boyle et al. (2019). Weber and colleagues' 95-case retrospective is the clinic's experience curve: single-function cases respond well, multiply-maintained cases need more intensive thinning, and escape-component cases need the most attention Weber et al. (2024).

School (general education and self-contained)

The pattern across the school FCT corpus is brief or trial-based FA → short function-matched FCR taught in the instructional context → multiple-schedule thinning with classroom-friendly SDs → paraeducator or teacher implementation with BST and ongoing coaching. The mega-review of 17 prior school-FCT reviews concluded positive outcomes occurred regardless of which FBA preceded FCT — implementer skill drove results more than method choice Corr et al. (2025). BST for paraeducators broadens classroom communication opportunities beyond simple requesting to include tacts and intraverbals during academic instruction Anderson et al. (2025). When teachers cannot place severe behavior on extinction, concurrent-schedule FCT with antecedent strategies is the practical compromise, with mixed but real reductions Torelli & Lloyd (2024). The standing warning: only about a third of FBA-based interventions for EBD students currently include FCT (Pollack et al., 2024).

Home, telehealth, and residential

Home-based FCT centers on brief FA (often via telehealth), parent training in FCR delivery, response-effort calibration, and naturalistic opportunities across daily routines Bondy et al. (2020). Rivera and colleagues' parent-implemented chained-schedule FCT for trash-disposal escape behavior shows how a single FCR ("ask for help") fits into a recurring routine and produces near-zero rates of problem behavior while the routine is completed Rivera et al. (2023). Tsami and Lerman's parent-telehealth FCT for multiply controlled behavior shows home delivery can match clinic integrity with adequate coaching, but combined-EO training requires isolated-EO probes before discharge Tsami & Lerman (2020). For residential and adult disability services, where severe topographies, dispersed staff, and inconsistent training concentrate, the pyramidal-BST cascade is well-suited because group training is rarely feasible (Ólafsdóttir et al., 2025).

• FCR effort ≥ problem-behavior effort. The single most common design failure; specify an indicating response that takes under 2 seconds and is recognizable across staff before adding vocal or signed complexity (Frampton et al., 2024).
• Reinforcer mismatch. When the FA identifies caregiver compliance with mands as the function, blocking compliance for the destructive topography is part of the treatment, not an optional add-on Owen et al. (2020).
• Training under combined EOs and not probing isolated contexts. Expect to teach and thin in each isolated EO before discharge when the original analysis combined them Tsami & Lerman (2020).
• Thinning reinforcement while keeping demands constant — or vice versa. Demand fading and dense-to-lean reinforcement thinning need to be combined; doing one without the other risks post-thinning resurgence Gerow et al. (2020).
• Assuming didactic training translates to running multiple schedules correctly. Most fidelity errors cluster around schedule-transition and SD moments; supervise these components first Yassa et al. (2024).
• Ignoring extinction-burst risk after long pre-session EO exposure. Schedule sessions accordingly and have crisis plans for sessions that must follow long deprivation Fisher et al. (2018).
• Single-language FCT for bilingual learners. Program both languages plus a message-repair procedure from the start Banerjee et al. (2022) (Waits & Gilroy, 2025).
• Treating "vocal first" as a default. For severe destructive topographies, a card or low-effort indicating FCR can be safer; vocal can be added later through a planned topography-transition procedure Randall et al. (2021).
• Stopping fidelity probes after acquisition. FCT integrity is most fragile during thinning and maintenance; bug-in-ear or brief follow-up probes pull fidelity back to mastery with minimal cost Artman-Meeker et al. (2017).
• Using FCT-without-extinction as a default rather than a fallback. Behavior-reduction outcomes are mixed; reserve it for cases where extinction is genuinely impractical and pair with antecedent strategies Torelli & Lloyd (2024).
• Skipping FCT for EBD students with FBA-identified functions. Only about a third of FBA-based EBD interventions currently include FCT — the burden of justification is on the omission (Pollack et al., 2024).

• Behavior with possible medical or biological substrate. Pain, sleep, GI, or seizure involvement; tissue-damaging topographies during prior FA attempts; pica with non-food items. Refer for medical evaluation before proceeding with FCT and document the consult.
• Multiply controlled severe behavior that does not respond to differentiated FCRs and isolated-EO thinning across two replications. Refer for specialist consultation or an inpatient behavior unit; Weber and colleagues' 95-case data make clear these cases are systematically harder than headline numbers suggest Weber et al. (2024).
• Persistent extinction-burst escalation that endangers learner or staff. When pre-session EO management, antecedent modification, and matched-effort FCR design have all been tried and bursts remain unsafe, refer to a setting with FA-safety training and crisis-response capacity Fisher et al. (2018).
• Resource ceiling on mediator training. When neither in-person, telehealth, nor pyramidal-cascade BST brings staff or caregivers to ≥80% procedural integrity after two cycles, refer the case rather than running an underpowered FCT in-house Tomlinson et al. (2018) (Ólafsdóttir et al., 2025).
• Active psychiatric crisis or imminent safety concern that overwhelms behavioral assessment timelines. Refer to licensed mental-health crisis services and resume FCT planning after stabilization.

FCT's efficacy claims sit on solid single-subject and systematic-review evidence; effectiveness claims — durable, generalized, socially valid outcomes in everyday settings — are under-documented Ghaemmaghami et al. (2021). The field needs prospective long-term follow-up studies that track FCR maintenance, problem-behavior recurrence, and quality-of-life indices across months and years rather than short post-treatment windows. Group-design comparisons of IISCA-derived versus brief-FA-derived versus descriptive-only FCT, paired with common downstream treatment packages, would clarify whether assessment format matters when implementer skill is held constant Corr et al. (2025). The escape-component disadvantage Weber and colleagues observed across 95 cases is a treatment-selection problem the field has not solved; a prospective trial of specific thinning, demand-fading, or supplementary-contingency combinations is the obvious next step Weber et al. (2024). Telehealth FCT has been validated in nine small-sample studies Tomlinson et al. (2018); bilingual FCT has only two- and three-participant demonstrations Banerjee et al. (2022) (Waits & Gilroy, 2025). The pyramidal-BST cascade needs field replication with real clients (Ólafsdóttir et al., 2025). And the EBD-coverage gap — only about a third of FBA-based EBD interventions include FCT — is itself a research target (Pollack et al., 2024).

1. Always link the FCR to an FBA-identified function. FCT is a function-based replacement; the reinforcer the FCR produces must match what the FA identified Ghaemmaghami et al. (2021).
2. Verify FCR effort < problem-behavior effort before training. The single most important design check Tomlinson et al. (2018).
3. Establish an indicating response first. A motor response the learner can already emit and adults can reinforce in under 2 seconds, before adding vocal or signed complexity (Frampton et al., 2024).
4. For severe destructive topographies, start with a card FCR and transition to vocal later. "Vocal first" is not the safest default for high-risk cases Randall et al. (2021).
5. When prior mands co-exist with problem behavior, consider a brand-new FCR — equally effective, often learner-preferred, and less prone to resurgence Matter & Zarcone (2017).
6. Pair FCT with extinction whenever feasible. Concurrent-schedule FCT produces mixed behavior-reduction outcomes; reserve it for cases where extinction is genuinely impractical Torelli & Lloyd (2024). For destructive mands maintained by caregiver compliance, blocking compliance is part of the treatment Owen et al. (2020).
7. Schedule sessions to manage pre-session EO exposure. Brief exposure minimizes extinction bursts; extended exposure produces them in most applications Fisher et al. (2018).
8. Thin with naturally-occurring SDs first, then add therapist-arranged SDs before generalization Shamlian et al. (2016). For escape-maintained behavior, combine demand fading with dense-to-lean reinforcement thinning Gerow et al. (2020); use chained schedules to recruit assistance instead of escape Rivera et al. (2023).
9. For multiply maintained behavior, plan differentiated FCRs and isolated-EO probes from the start — escape-component cases need the most thinning and supplementary contingencies Weber et al. (2024) Tsami & Lerman (2020) Boyle et al. (2019).
10. For bilingual learners, train FCRs in both languages with message-repair from day one Banerjee et al. (2022) (Waits & Gilroy, 2025).
11. Train mediators with BST plus on-the-job coaching. A 30-minute BST package installs the basic skill; bug-in-ear or brief telehealth coaching during early sessions catches schedule-transition errors Artman-Meeker et al. (2017) Yassa et al. (2024). When expert capacity is limited, a pyramidal BST cascade scales delivery (Ólafsdóttir et al., 2025).
12. For home-based FCT, embed the FCR in actual daily routines — Bondy and colleagues' nine pivotal communicative operants within meals, play, and transitions produce better maintenance than clinic-only instruction Bondy et al. (2020).
13. For EBD students, add FCT to the BIP unless you have a specific reason not to — only about a third of FBA-based EBD interventions currently include FCT (Pollack et al., 2024).
14. Probe FCR durability before discharge. A brief reversal where the FCR consequence is withheld during evocative tasks confirms the response remains functional (Jessel et al., 2024).
15. Program for maintenance and generalization explicitly. Effectiveness in everyday settings depends on proactive thinning, mediator training, and cross-context probes — durability is a design choice, not a default Ghaemmaghami et al. (2021).

Primary research synthesized in this guide. DOIs link to the original source.

• Corr, F., Rispoli, M., & Welker, N. P. (2025). A Mega-Review of Functional Communication Training for Students with Disabilities in Educational Settings. Journal of Behavioral Education. https://doi.org/10.1007/s10864-025-09598-4 https://doi.org/10.1007/s10864-025-09598-4
• Ólafsdóttir, A. B., Sveinbjörnsdóttir, B., & Gunnarsson, K. F. (2025). Expanding the pyramidal staff training approach. Journal of Organizational Behavior Management. https://doi.org/10.1080/01608061.2025.2499447 https://doi.org/10.1080/01608061.2025.2499447
• Tomlinson, S. R. L., Gore, N., & McGill, P. (2018). Training Individuals to Implement Applied Behavior Analytic Procedures via Telehealth: A Systematic Review of the Literature. Journal of Behavioral Education, 27(2), 172-222. https://doi.org/10.1007/s10864-018-9292-0 https://doi.org/10.1007/s10864-018-9292-0
• Jessel, J., Fruchtman, T., Raghunauth‑Zaman, N., Leyman, A., Lemos, F. M., Costa Val, H., Howard, M., & Hanley, G. P. (2024). A two step validation of the performance‑based IISCA: A trauma‑ informed functional analysis model. Behavior Analysis in Practice, 17, 727–745. https://doi.org/10.1007/s40617-023-00792-2 https://doi.org/10.1007/s40617-023-00792-2
• Tsami, L. & Lerman, D. C. (2020). Transfer of treatment effects from combined to isolated conditions during functional communication training for multiply controlled problem behavior. Journal of Applied Behavior Analysis, 53(2), 649-664. https://doi.org/10.1002/jaba.629 https://doi.org/10.1002/jaba.629
• Ghaemmaghami, M., Hanley, G. P., & Jessel, J. (2021). Functional communication training: From efficacy to effectiveness. Journal of Applied Behavior Analysis, 54(1), 122-143. https://doi.org/10.1002/jaba.762 https://doi.org/10.1002/jaba.762
• Thakore, A. H., & Kettering, T. L. (2025). Functional analysis and treatment of repetitive verbal behavior in children diagnosed with autism spectrum disorder. The Analysis of Verbal Behavior, 41, 68–83. https://doi.org/10.1007/s40616-024-00208-4 https://doi.org/10.1007/s40616-024-00208-4
• Boyle, M. A., Stamper, S. M., Donaldson, E. A., Curtis, K. S., Forck, K. L., Shrimplin, M. A., Barsness, A. C., & Oller, C. (2019). Functional Communication Training for Multiple Reinforcers: an Evaluation of Isolated Control Following a Synthesized Context. Behavior Analysis in Practice, 12(3), 592-599. https://doi.org/10.1007/s40617-018-00320-7 https://doi.org/10.1007/s40617-018-00320-7
• Yassa, R. R., Mitteer, D. R., Greer, B. D., Angley, S. M., McCabe, L. H., & Elwasli, O. M. (2024). Teaching trainees to implement functional communication training with multiple schedules: An evaluation of training effects and durability. Journal of Applied Behavior Analysis, 57(4), 999-1015. https://doi.org/10.1002/jaba.2915 https://doi.org/10.1002/jaba.2915
• Owen, T. M., Fisher, W. W., Akers, J. S., Sullivan, W. E., Falcomata, T. S., Greer, B. D., Roane, H. S., & Zangrillo, A. N. (2020). Treating destructive behavior reinforced by increased caregiver compliance with the participant's mands. Journal of Applied Behavior Analysis, 53(3), 1494-1513. https://doi.org/10.1002/jaba.674 https://doi.org/10.1002/jaba.674
• Anderson, E. J., Brock, M. E., & Shawbitz, K. N. (2025). Training Paraeducators to Promote Communication Opportunities for Students with Complex Communication Needs. Journal of Behavioral Education, 34(3), 621-633. https://doi.org/10.1007/s10864-024-09548-6 https://doi.org/10.1007/s10864-024-09548-6
• Fruchtman, T., Jessel, J., Pan, B., McLeod, S., & Rajaraman, A. (2025). The Performance-based IISCA Can Inform Effective and Socially Meaningful Skill-based Treatment. Behavior Analysis in Practice, 18(4), 921-940. https://doi.org/10.1007/s40617-024-01036-7 https://doi.org/10.1007/s40617-024-01036-7
• Fisher, W. W., Greer, B. D., Mitteer, D. R., Fuhrman, A. M., Romani, P. W., & Zangrillo, A. N. (2018). Further evaluation of differential exposure to establishing operations during functional communication training. Journal of Applied Behavior Analysis, 51(2), 360-373. https://doi.org/10.1002/jaba.451 https://doi.org/10.1002/jaba.451
• Pollack, M. S., Lloyd, B. P., Doyle, L. E., Santini, M. A., & Crowell, G. E. (2024). Are function‑based interventions for students with emotional/behavioral disorders trauma informed? A systematic review. Behavior Analysis in Practice, 17, 709–726. https://doi.org/10.1007/s40617-023-00893-y https://doi.org/10.1007/s40617-023-00893-y
• Rivera, G., Avery, S. K., Gerow, S., & Exline, E. (2023). Functional communication training and a chained schedule of reinforcement to reduce escape‐maintained challenging behavior related to a daily routine. Behavioral Interventions, 38(4), 1-11. https://doi.org/10.1002/bin.1972 https://doi.org/10.1002/bin.1972
• Weber, J., Fahmie, T., Walker, S., Lambert, J., Copeland, B., Freetly, T., & Zangrillo, A. (2024). Exploring factors that influence the efficacy of functional communication training. Journal of Applied Behavior Analysis, 57(3), 709-724. https://doi.org/10.1002/jaba.1078 https://doi.org/10.1002/jaba.1078
• Torelli, J. N. & Lloyd, B. P. (2024). Evaluating functional communication training without extinction in public school settings. Behavioral Interventions, 39(2). https://doi.org/10.1002/bin.1995 https://doi.org/10.1002/bin.1995
• Randall, K. R., Greer, B. D., Smith, S. W., & Kimball, R. T. (2021). Sustaining behavior reduction by transitioning the topography of the functional communication response. Journal of Applied Behavior Analysis, 54(3), 1013-1031. https://doi.org/10.1002/jaba.824 https://doi.org/10.1002/jaba.824
• Bondy, A., Horton, C., & Frost, L. (2020). Promoting Functional Communication Within the Home. Behavior Analysis in Practice, 13(2), 321-328. https://doi.org/10.1007/s40617-020-00439-6 https://doi.org/10.1007/s40617-020-00439-6
• Ampuero, M. E., Kinkade, E. M., & Ratkos, T. (2025). Evaluating the Effectiveness of Behavioral Skills Training on the Implementation of an Icon Exchange Communication Intervention by Preservice Educators. Education and Treatment of Children, 48(2), 141-154. https://doi.org/10.1007/s43494-025-00153-4 https://doi.org/10.1007/s43494-025-00153-4
• Artman-Meeker, K., Rosenberg, N., Badgett, N., Yang, X., & Penney, A. (2017). The Effects of Bug-in-Ear Coaching on Pre-Service Behavior Analysts’ Use of Functional Communication Training. Behavior Analysis in Practice, 10(3), 228-241. https://doi.org/10.1007/s40617-016-0166-4 https://doi.org/10.1007/s40617-016-0166-4
• Banerjee, I., Lambert, J. M., Copeland, B. A., Paranczak, J. L., Bailey, K. M., & Standish, C. M. (2022). Extending functional communication training to multiple language contexts in bilingual learners with challenging behavior. Journal of Applied Behavior Analysis, 55(1), 80-100. https://doi.org/10.1002/jaba.883 https://doi.org/10.1002/jaba.883
• Frampton, S. E., Axe, J. B., Davis, C. R., Meleshkevich, O., & Li, M.-H. (2024). A tutorial on indicating responses and their importance in mand training. Behavior Analysis in Practice, 17, 1238–1249. https://doi.org/10.1007/s40617-024-00965-7 https://doi.org/10.1007/s40617-024-00965-7
• Matter, A. L. & Zarcone, J. R. (2017). A comparison of existing and novel communication responses used during functional communication training. Behavioral Interventions, 32(3), 217-224. https://doi.org/10.1002/bin.1481 https://doi.org/10.1002/bin.1481
• Shamlian, K. D., Fisher, W. W., Steege, M. W., Cavanaugh, B. M., Samour, K., & Querim, A. C. (2016). Evaluation of multiple schedules with naturally occurring and therapist‐arranged discriminative stimuli following functional communication training. Journal of Applied Behavior Analysis, 49(2), 228-250. https://doi.org/10.1002/jaba.293 https://doi.org/10.1002/jaba.293
• Gerow, S., Radhakrishnan, S., Davis, T. N., Hodges, A., & Feind, A. (2020). A Comparison of Demand Fading and a Dense Schedule of Reinforcement During Functional Communication Training. Behavior Analysis in Practice, 13(1), 90-103. https://doi.org/10.1007/s40617-019-00403-z https://doi.org/10.1007/s40617-019-00403-z
• McCammon, M. N., Wolfe, K., & Check, A. R. (2024). A review of the environmental variables included in mand training interventions. The Analysis of Verbal Behavior, 40, 345–378. https://doi.org/10.1007/s40616-024-00211-9 https://doi.org/10.1007/s40616-024-00211-9
• Waits, R. A., & Gilroy, S. P. (2025). Development and evaluation of a simultaneous bilingual communication intervention protocol for autistic children. Journal of Applied Behavior Analysis, 58(4), 717–730. https://doi.org/10.1002/jaba.70038 https://doi.org/10.1002/jaba.70038
• Mattson, S. L., Higbee, T. S., Nichols, B., Aguilar, J., & Campbell, V. E. (2024). Effects of an activity schedule intervention package on cooperative vocal exchanges during learning centers. Behavior Analysis in Practice, 17, 1175–1190. https://doi.org/10.1007/s40617-024-00939-9 https://doi.org/10.1007/s40617-024-00939-9
• Togashi, K. (2025). Training in trial-based functional analysis via computer-based instruction and behavioral skills training. Behavior Analysis in Practice. https://doi.org/10.1007/s40617-025-01136-y https://doi.org/10.1007/s40617-025-01136-y