In science in general and in the context of single-case experimental designs, replication of the effects of the intervention within and/or across participants or experiments is crucial for establishing causality and for assessing the generality of the intervention effect. Specific developments and proposals for assessing whether an effect has been…

The effect of a fixed-time (FT) schedule involving the delivery of preferred stimuli prior to the issuance of a low-probability instruction was evaluated with 2 young children with autism. The FT schedule was introduced according to a reversal design with 3 target instructions, 1 for the first child and 2 for the second child. Compliance increased…

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)

A mediated punishment procedure that involved recreating a behavioral sequence by guiding the subject through the behavior in the situation in which it occurred was used to suppress several severe behavior problems in two severely handicapped children (ages 4 and 17). (Author/DB)

The study examined effects of task-sequencing variables on the academic performance of an 8-year-old severe stroke victim. Previously acquired (maintenance) task trials were systematically interspersed among new (acquisition) task trials. Results showed improvements in both academic responding and subjective ratings of motivation in spelling,…

Data are summarized from 152 single-subject analyses of the reinforcing functions of self-injurious behavior (SIB) in individuals with developmental disabilities. Overall results indicated that functional analysis methodologies are extremely effective in identifying the environmental determinants of SIB on an individual basis and, subsequently, in…

This study effectively eliminated face-slapping behavior in a 10-year-old boy with severe developmental disability and autistic characteristics. The subject wore wrist weights for up to 30 minutes each day. Face slapping did not occur during a follow-up check conducted five months after study completion. (Author/DB)

Two studies compared the effectiveness of different strategies for promoting generalization of staff skills in teaching self-care routines to clients with developmental disabilities. Results indicated that general case training was more effective at promoting generalized training effects than provision of written instructions, single case…

Two case studies examined the utility of curriculum-based measurement of math and reading for evaluating the effects of methylphenidate on the academic performance of two students diagnosed with attention deficit hyperactivity disorder. Results suggest that the curriculum-based measures were sensitive indicators of the students' responses to the…

A fading procedure was successfully used to maintain high levels of compliance obtained with presenting high-probability requests immediately antecedent to low-probability requests in both a 5-year-old boy with developmental disabilities and a 15-year-old girl with developmental disabilities (for whom rephrasing of "don't" requests to…

Functional analysis of destructive behavior of a four-year-old boy with autism and oppositional defiant disorder was able to delineate the specific form of verbal attention that was responsible for behavioral maintenance. Treatment based on the analysis reduced the behavior to near-zero levels. (DB)

This study evaluated the effects of restraint on occurrences of self-injurious behavior (SIB) and adaptive responses exhibited by two individuals with profound mental retardation across eight response-effort conditions with varying degrees of physical restraint. Analysis identified a restraint level for each individual that reduced SIB but did not…

This paper summarizes brief functional assessments of 79 cases of people with developmental disabilities and self-injurious, aggressive, stereotypic, or other aberrant behavior. Outcomes were evaluated across three variables: (1) referring topography, (2) control over behavior, and (3) the identified maintaining conditions for aberrant behavior.…

A case study of an elementary school child with emotional and behavioral problems illustrates a process of descriptive assessment, functional assessment, and assessment-based intervention. The descriptive information generated hypotheses about variables maintaining the problem behavior which were then tested in the classroom environment.…