scholarly journals Investigating the Acquisition, Generalization, and Emergence of Untrained Verbal Operants for Mands Acquired Using the Picture Exchange Communication System in Adults With Severe Developmental Disabilities

2008 ◽  
Vol 24 (1) ◽  
pp. 15-30 ◽  
Author(s):  
Megan M. Ziomek ◽  
Ruth Anne Rehfeldt
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