ABA Fundamentals

Functional analysis and treatment of the bizarre speech of dually diagnosed adults.

Lancaster et al. (2004) · Journal of applied behavior analysis 2004
★ The Verdict

Non-contingent attention only tames bizarre speech when a prior FA proves attention is the reinforcer.

✓ Read this if BCBAs treating adults with ID who emit psychotic-sounding speech.
✗ Skip if Clinicians whose clients already showed sensory or escape functions.

01Research in Context

01

What this study did

Two adults with intellectual disability kept saying odd things that scared staff.

The team ran a functional analysis to see why the speech happened.

They tested if the words got worse when staff gave attention, escaped tasks, or happened alone.

02

What they found

Only the two people whose odd talk earned staff eye-contact and replies got better.

Non-contingent attention—staff chatting every 30 seconds no matter what—cut the bizarre speech.

The clients whose talk was not about getting attention did not improve.

03

How this fits with other research

Morris et al. (2019) repeated the same FA-then-NCR steps on a feather-plucking vulture and also saw the problem drop, showing the pattern crosses species.

Livingston et al. (2021) let parents run a 5-minute RAAT to find the right kind of attention, then treated attention-kept behavior at home—same idea, faster tool.

Fahmie et al. (2013) counted 435 FA studies and remind us most problem behavior is multiply controlled, so skipping the FA risks picking the wrong fix.

04

Why it matters

Before you use non-contingent reinforcement for odd or scary talk, run a quick functional analysis. If attention is the pay-off, schedule steady pleasant chat and the words should fade. If the FA shows escape or sensory pay-offs, pick a different plan. This keeps you from wasting weeks on the wrong treatment.

Free CEUs

Want CEUs on This Topic?

The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.

Join Free →
→ Action — try this Monday

Run a 10-minute attention condition FA; if rate climbs, start 30-s non-contingent praise.

02At a glance

Intervention
noncontingent reinforcement
Design
single case other
Sample size
4
Population
intellectual disability, mixed clinical
Finding
positive

03Original abstract

Nine behavior-analytic studies, each reporting data for a single participant, have shown that bizarre speech can be maintained by social reinforcement. In the current study, we controlled for a possible referral bias in this literature by including nonreferred participants with dual diagnoses. Functional analyses identified attention functions for 2 participants and nonsocial functions for the others. Noncontingent reinforcement decreased the bizarre speech of both participants who displayed attention-maintained bizarre speech.

Journal of applied behavior analysis, 2004 · doi:10.1901/jaba.2004.37-395