A six-year-old nonvocal girl with autism who had acquired a variety of signs and imitative responses consistently failed to acquire a tact (labeling) repertoire. When procedures to transfer stimulus control from verbal to nonverbal stimuli were implemented, the subject quickly learned to tact all 18 target stimuli. (Author/DB)

The role of subject verbalization in the generalization of verbal-nonverbal correspondence was investigated in 12 kindergarten children who underwent either correspondence training (subject verbalization) or performing a behavior verbalized by the experimenter. Pupils who received correspondence training demonstrated greater generalization.…

The effects of instructional strategies on the academic performance of four children with learning disabilities were examined using brief multielement designs. Instructional strategies included follow along/sound out, verbal rehearsal, verbal outline, and rhyming words/sample spelling. Manipulation of the instructional strategies was useful in…

This case study describes initially unsuccessful attempts to use the delayed-cue procedure to teach conditional discriminations to a 25-year-old male with moderate mental retardation. The subject typically waited for the delayed cue unless differential responses to the dictated samples (repeating the sample names) were required. (Author/DB)

Two studies involving three adolescents with severe emotional disturbance/behavior disorders and learning difficulties examined effects of problem difficulty and reinforcer quality upon time allocated to two sets of arithmetic problems. Results have implications for understanding the effects of problem difficulty and reinforcer quality on behavior…

Examination of effects on 27 secondary students' Spanish vocabulary quiz performance of 2 variables (group versus individual study and group versus individual contingencies) found that, overall, group study was superior to individual study and, within the group study condition, group contingencies were superior to individual contingencies.…

Using an ABAB design, two procedures for requesting a change of activity were compared for their effect on the stereotypic behavior of a man with autism. One procedure requested immediate change of activities, whereas the second procedure gave advance notice of a change. Less stereotypy occurred when advance notice of change was given. (Author/DB)

An intervention for noncompliance, consisting of a series of requests promoting a high probability of compliance followed either 5 seconds or 20 seconds later by a request with a low probability of compliance, was implemented with a preschool child with autism. Results indicated that a shorter interprompt time resulted in higher rates of…

This response to four papers on the nature of reinforcement focuses on the implications for application of theory to practice. The response addresses: reversibility of single-incentive selective associations; response deprivation, reinforcement, and economics; the substitutability of reinforcers; and delay reduction. (DB)

Three adolescent students with special educational needs were given reinforcers (nickels) according to three different concurrent variable-interval schedules. Time allocated to the assigned tasks was in linear relationship to the reinforcement rate. However, changes in reinforcement schedules were not followed by changes in allocation patterns…

This study compared immediate (after each error) and delayed (at the end of each session) error correction during sight-word instruction with 4 students (ages 7-9) with developmental disabilities. Immediate error correction was superior on each of four dependent variables. (Author/DB)

The effects of a variable-ratio schedule of reinforcement on pedaling a stationary exercise bicycle were examined with 3 obese and 3 nonobese 11-year-old boys over a 12-week period. The intervention resulted in systematic increases in rate of exercise for all subjects. (Author/DB)

This study examined how reinforcer rate, quality, delay, and response effort combined to influence the choices of six adolescents with emotional disturbance and learning difficulties and the feasibility of an assessment methodology based on matching theory for determining differential responsiveness to reinforcer and response dimensions. Results…

Seven adults with severe to profound mental retardation participated in match-to-sample discrimination training under three conditions. Results indicated that error-correction procedures improve performance through negative reinforcement; that error correction may serve multiple functions; and that, for some subjects, trial repetition enhances…

The study compared the task demonstration model and the standard prompting hierarchy in training 8 persons (ages 16-21) with moderate or severe mental retardation on a discrimination task. The task demonstration model was found to be superior during both training and generalization phases. (DB)