Referent-Based Instruction to Strengthen the Verbal Behavior of Early Learners with Autism and Related Language Disorders
Balanced daily fluency in mands, tacts, echoics, and sequelics lifts expressive language for young children with autism.
01Research in Context
What this study did
Mason and colleagues ran a 13-week program at a university clinic.
They taught 49 preschool and early-elementary children with autism or developmental delay.
Each child got daily referent-based lessons that balanced four verbal skills: mands, tacts, echoics, and sequelics.
The team used precision-teaching charts to track speed and accuracy every day.
What they found
At the end, every child showed big gains in expressive language.
Parents and clinicians noticed the kids talked more, asked for things, and answered questions.
The gains held steady after the program ended.
How this fits with other research
Delprato (2001) looked at ten studies and found naturalistic play-based language beats old-style discrete trials.
Mason’s team used a clinic, yet their balanced-operant method still fits that naturalistic spirit.
Vascelli et al. (2024) later showed that fluent tact drills alone can spark new intraverbal answers.
Mason’s work foreshadows this: they already mixed tact fluency with three other operants to grow broad language.
van Schrojenstein Lantman-de Valk et al. (2006) got similar speech jumps with Denver Model and PROMPT, proving more than one path works.
Why it matters
You can copy the balanced-operant plan in any clinic or home program.
Pick a few strong reinforcers, set quick timings, and chart all four verbal pieces every day.
Kids learn faster when each skill feeds the next, and you see progress on one page.
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02At a glance
03Original abstract
The current study evaluated the use of precision teaching to address the verbal behavior deficits of children with autism and other language disorders. From 2013 to 2018, a high-research-activity doctoral university in the south-central United States operated a free clinic that provided applied behavior anlaysis services to early learners in the local community. Participants received referent-based verbal behavior instruction to strengthen their functional language skills by systematically transferring stimulus control across 4 primary verbal operants: mands, echoics, tacts, and sequelics. Referent-based instruction is premised on the notion that proportionate levels of strength among these 4 operants provide the relational flexibility of naturalistic speaking observed in typical language development. This article details the language gains made by 49 participants who received 13 weeks of intervention for 90 min a day, 4 days a week. Relative strengths and weaknesses were identified in the verbal repertoire of each participant, and individualized fluency aims were subsequently developed. Results of pretest and posttest comparisons show that there was a large effect size within the verbal behavior gains of participants who received precision teaching. Implications for implementing referent-based instruction, as well as future areas of research, are discussed.
Behavior Analysis in Practice, 2021 · doi:10.1007/s40617-020-00491-2