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Behavior Modification
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Using Pictures to Assess Reinforcers in Individuals With Developmental Disabilities

Richard B. Graff

New England Center for Children, and Northeastern University

Lenwood Gibson

New England Center for Children

Tangible preference assessments were compared with pictorial preference assessments for 4 individuals with developmental disabilities. In the tangible assessment, on each trial two stimuli were selected and placed in front of the participant, who approached one. In the pictorial assessment, on each trial two line drawings were placed in front of the participant, who pointed to one. For both assessments, the percentage of opportunities each stimulus was approached or touched was calculated, and hierarchies of preferred items were developed. The two assessments yielded similar preference hierarchies for 3 of 4 participants. Reinforcer assessments using a simple free operant response confirmed that items identified as highly preferred on tangible and pictorial assessments functioned as reinforcers.

Key Words: reinforcer assessment • pictorial preference assessment • developmental disabilities

Behavior Modification, Vol. 27, No. 4, 470-483 (2003)
DOI: 10.1177/0145445503255602
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