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Direct linkNorth, Stephen T.; Iwata, Brian A. – Journal of Applied Behavior Analysis, 2005
In Study 1, we examined the independent effects of reinforcer consumption during sessions and meal consumption prior to sessions on performance maintained by food reinforcement. Nine individuals with developmental disabilities participated. On alternate days, a preferred edible item was delivered during (a) seven sessions conducted before lunch…
Descriptors: Program Effectiveness, Developmental Disabilities, Behavior Modification, Reinforcement
Peer reviewedLerman, Dorthea C.; Iwata, Brian A.; Rainville, Beth; Adelinis, John D.; Crosland, Kimberly; Kogan, Jeffrey – Journal of Applied Behavior Analysis, 1997
The effects of reinforcement choice on task performance were examined with six individuals (ages 6-39) who had been diagnosed with severe to profound mental retardation. Findings indicated that access to choice did not improve the task performance of the subjects when highly preferred items were already incorporated into instructional programs.…
Descriptors: Adults, Children, Decision Making, Developmental Disabilities
Peer reviewedIwata, Brian A.; And Others – Journal of Applied Behavior Analysis, 1994
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…
Descriptors: Case Studies, Developmental Disabilities, Environmental Influences, Evaluation Methods
