In this study, we continued evaluation of a two-choice preference assessment aimed at identifying a hierarchy of reinforcers for individuals with only one voluntary motor sequence--closing and releasing an adaptive switch. We assessed preferences among types of sensory stimulation in 6 adults with multiple profound impairments using concurrent…

Although delusional statements in people with intellectual disabilities and traumatic brain injury can be treated using behavioral interventions, none have demonstrated long-term treatment effects. In the current study, a functional analysis demonstrated that delusional statements were maintained by attention. Differential reinforcement of…

Four experiments involving 18 individuals (ages 14-55) with profound multiple handicaps found that 12 stimuli used in a preference assessment represented a comprehensive stimulus set for identifying preferences, though the utility of the set could sometimes be enhanced by caregiver opinion. Results also indicated that preferences identified were…

The study evaluated the effectiveness of an electric vibrator on the deceleration and/or extinction of 10 self abusive and aberrant behaviors in a profoundly retarded, nonambulatory 25 year old female who could not hear, see, or speak. At the end of 41 twenty minute sessions, seven of the target behaviors approached extinction and three were…

The study investigated the effects of the overcorrection procedure of functional movement training (in which praise and physical contact are offered for correct positions) on establishing and maintaining the visual attending of a multihandicapped, profoundly retarded learner (20 years old) in a public school program. The effectiveness of positive…

Thirty-eight institutionalized severely and profoundly retarded blind students (11 to 26 years old) were given a 100-session taped treatment program to increase vocal utterances both qualitatively and quantitatively. Ss made significant gains in quantity of utterances as reflected in a median test. (A categorization schema for quality of preverbal…

The literature on symbolic forms of communication was reviewed, and an experimental program was designed to teach a single set of vocabulary to a group of four institutionalized profoundly retarded blind/mute adults through the use of gestures. Literature about deaf/blind persons suggested the use of coactive movement techniques and facilitation…

Three individuals with multiple severe disabilities were taught an appropriate response to problem behaviors, but the response was less efficient than the problem behavior on physical effort, schedule of reinforcement, or stimulus-reinforcer time delay. The response did not compete successfully with the problem behaviors until a new, more…