Effects of fixed-interval reinforcement on the frequency of a verbal response class in a quasi-counseling situation.
1968 ◽
Vol 15
(2)
◽
pp. 140-146
◽
1969 ◽
Vol 12
(1)
◽
pp. 199-209
◽
1972 ◽
Vol 33
(2)
◽
pp. 311-324
◽
1969 ◽
Vol 9
(2)
◽
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