ABA Fundamentals

Effects of feedback and self-monitoring on head trauma youths' conversation skills.

Gajar et al. (1984) · Journal of applied behavior analysis 1984
★ The Verdict

A small switch in the learner’s hand can boost positive talk as well as staff-run feedback for youths with brain injury.

✓ Read this if BCBAs teaching social or language skills to youths with TBI or similar cognitive delays.
✗ Skip if Clinicians whose clients need behavior reduction rather than skill building.

01Research in Context

01

What this study did

The team worked with youths who had traumatic brain injuries. Each youth wanted better back-and-forth talk with peers.

Kids got two tools. One was a small light that blinked when they said something good. The other was a switch they flipped each time they thought they made a nice comment. Staff watched and also gave spoken feedback.

02

What they found

Both the light feedback and the flip-switch self-monitoring raised positive conversation turns. Gains showed up later in free chat with no gadgets.

Self-monitoring alone worked just as well as the external light cue plus adult praise.

03

How this fits with other research

Lincoln et al. (1988) later repeated the idea with deaf adults learning feeling words. Again, simple self-monitoring closed the gap to typical peers.

Burack et al. (2004) looked at middle-schoolers with behavior problems. They saw self-monitoring cut disruption only when adults also gave feedback. That seems opposite, but the 2004 kids had no brain injury and the goal was stopping problem acts, not growing new talk skills.

Minard et al. (2026) updated the mix for preschool teachers. Delayed supervisor feedback plus self-monitoring kept teacher praise high even when the boss was gone.

04

Why it matters

You can let clients track their own good talk with a simple switch or tally. It saves staff time and still builds real social gains that carry over to recess, lunch, or job breaks. Try giving the learner the clicker first before you add extra feedback.

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→ Action — try this Monday

Hand the client a tally counter and have them click for each nice comment during a 5-minute chat.

02At a glance

Intervention
self management
Design
single case other
Sample size
2
Population
traumatic brain injury
Finding
positive

03Original abstract

The effects of feedback and self-recording on the small group conversational behaviors of two head trauma youths were evaluated. Feedback involved providing clients a light signal corresponding to positive or negative social interactions. The self-monitoring procedure required that the clients flip a switch corresponding with their positive or negative interactions. An A1-B1-C1-A2-C2-B2 design in which the feedback phase (B) and self-monitoring phase (C) were alternated to control for order effects demonstrated the efficacy of both interventions. Performance gains were also shown to generalize to less structured situations, bringing the clients' level of positive responses into a range established with a social comparison group.

Journal of applied behavior analysis, 1984 · doi:10.1901/jaba.1984.17-353