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http://www.cabasschools.org/who-we-are/Throughout the 1990's CABAS model programs began to spring up in New York. They were tied to the Teachers College at Columbia University. Douglas Greer and Dolleen-Day Keohane are the pioneers in creating a science of teaching based on the princeples of applied behaivor analysis.
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After Catherine Maurice's book is published families begin demanding in-home behavior programming.
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