Visual inspection of data is a common method for understanding, responding to, and communicating important behavior-environment relations in single-subject research. In a field that was once dominated by cumulative, moment-to-moment records of behavior, a number of graphic forms currently exist that aggregate data into larger units. In this…

A choice assessment was used to categorize reinforcers as high, middle, and low preference with 4 males (ages 7 to 19) with multiple disabilities including severe/profound mental retardation. High-preference stimuli consistently functioned as reinforcers for all subjects whereas low-preference stimuli did not function as reinforcers. (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…

Two adults with severe mental retardation and profound hearing loss were given computer-based instruction in spelling. Positive results transferred to a retrieval task in which the participant wrote a list of objects displayed, selected the objects from a shelf, and returned the objects to the table. The role of stimulus class in fostering the…

In this study with three children (ages four and five) with severe developmental disabilities and aberrant behavior maintained by tangible positive reinforcement, noncontingent reinforcement, and differential reinforcement of alternative behavior were found to decrease the frequency of aberrant behavior while strengthening mands. (Author/DB)

Twelve proficient peer models without disabilities demonstrated a response chain for a targeted learning task each day and described the steps to three classmates with developmental disabilities, who observed. The peer models performed the response chains accurately and quickly and the students with disabilities acquired the response chains. (DB)

This study attempted to operationalize, measure, and increase happiness among five adults with profound mental and physical disabilities. Happiness indices were defined and observed. Most preferred stimuli-produced increases in happiness indices, and practitioner ratings of participant happiness coincided with observed indices. Discussion focuses…

Two case examples (a toddler with severe developmental delays and a 7-year old with severe mental retardation) illustrating effects of meal schedule and food quantity on displays of problematic behavior are offered. Brief functional analyses of aberrant behavior provided useful information for interpreting distinct patterns of behavior. (DB)

Discussion of the functional relationship between self-injurious behavior (SIB) and self-restraint in people with severe disabilities considers SIB and self-restraint as members of the same functional response class, SIB and self-restraint as functionally independent responses, access to self-restraint as positive reinforcement of SIB, termination…

This study compared rates of self-injurious behavior (SIB) exhibited by a 32-year-old woman with profound mental retardation across conditions in which access to restraint was either continuously available, presented as a consequence for SIB, or unavailable. Rates of SIB increased when access to restraint was contingent upon SIB, suggesting that…

This study examined the effects of blocking self-injurious behavior on the self-restraint of a 19-year-old male with severe mental retardation. Consistent with the negative reinforcement hypothesis, blocking SIB resulted in near-zero levels of SIB and moderate reductions in self-restraint. (Author/DB)

This study examined effects of providing attention (the presumed reinforcer) both noncontingently and contingent upon either self-injurious behavior or self-restraint with a 12-year-old female with multiple disabilities including profound mental retardation. Results were consistent with the hypothesis that both responses were maintained by…

This study compared the effects of unequal and equal reinforcer duration during a functional analysis of aberrant behavior in an 11-year old with moderate mental retardation. Results showed that reinforcer duration affects the rate of aberrant behavior and may potentially alter functional analysis interpretation. (DB)

This study assessed the effectiveness of posting signs for reducing graffiti in three men's restrooms on a college campus. Immediately following the intervention, no marks were made, and results were maintained at three-month follow-up. A possible explanation for the results is that the signs specified an altruistic contingency. (Author/DB)

A functional analysis of eye poking by a four-year-old female with severe developmental disabilities and visual impairments showed that high rates occurred in all conditions. Attempts to identify the maintaining variable found that eye poking decreased only when finger-eye contact was interrupted by blocking the response. (Author/DB)