We evaluated a procedure for identifying potential reinforcers with profoundly retarded individuals. In Experiment 1, six persons were repeatedly exposed to 16 stimuli, and approach behaviors to each stimulus were used to identify preferred and nonpreferred stimuli. In Experiment 2, we examined the reinforcing properties of preferred and nonpreferred stimuli by delivering them contingently on the occurrence of arbitrarily selected responses. Results revealed that the preferred stimulus conditions typically produced higher rates of responding than did either the baseline or the nonpreferred stimulus conditions, suggesting that the procedure can be used to assess reinforcer value for individuals with limited behavioral repertoires.

This study evaluated a program to teach and maintain language training interactions between institutional staff and profoundly handicapped children during a routine care task. Following baseline observations of bath sessions, staff were sequentially taught in multiple baseline fashion to vocalize more during the bath, praise child vocalizations, imitate sounds, and provide sound prompts. Procedures included a brief in-service meeting followed by a series of supervisory prompts and feedback. Results indicated that staff acquired the interaction skills in the bath sessions and that the skills generalized to another direct care task, dressing. The number of days on which components of supervision were implemented decreased from 47% of all days during the experimental conditions to 19% of the days during a 19-week maintenance period with no decrease in staff behavior. The interactions were shown not to interfere with the quality of the direct care task nor to increase the amount of time necessary to complete it. Also, some increases were noted for child vocalization frequencies. The advantages of providing therapeutic interactions during care routines are discussed along with the need for staff management techniques with long-term maintenance value.

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