Cognitive Psychology Commons^™

Measuring Changes In Spontaneous Play Behavior In Preschoolers With Autism Associated With A Receptive Language Intervention, Jori Reijonen

Dissertations

Children diagnosed with Autistic Disorder have well documented deficits in the development of pretend play. When it occurs, spontaneous pretend play differs from play seen in other children in frequency, duration, and quality. The present study examined the effects of teaching preschoolers with Autism to follow one-part directions to play during discrete trial receptive language training sessions on spontaneous play skills.

Receptive language tasks were designed to teach simple pretend play skills (e.g., "Feed the doll with a spoon"). Spontaneous play was continuously sampled during free play sessions in the clinic and in the child's home before these receptive tasks …

Self-Control In Mentally Retarded Adolescents: Choice As A Function Of Amount And Delay Of Reinforcement, Steven P. Ragotzy

Dissertations

Three severely mentally retarded adolescents were studied under discrete-trial procedures in which a choice was arranged between edible reinforcers that differed in magnitude and, in some conditions, delay. In the absence of delays, the larger reinforcer was consistently chosen. All subjects directed the majority of choice responses to the smaller reinforcer when the larger reinforcer was sufficiently delayed, although the value at which this occurred differed across subjects. Under conditions where the larger reinforcer initially was sufficiently delayed to result in preference for the smaller one, progressively increasing in 5-s increments the delay to both reinforcers increased percent trials with …