## Lesson 15

Last update by rockchalkjhawk on 12/04/2009
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# When shaping a new behavior, both reinforcement and extinction are used in the procedure of differential reinforcement. What is the best generic schedule to use for the reinforcement part of differential reinforcement: ________________________________.

continuous

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Harvey earned money picking pears. He was paid 25 cents for every ten that he picked. What schedule of reinforcement is his pear-picking behavior on: __________________.
fixed-ratio
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80%
Name the four principles that govern the effectiveness of a reinforcer: __________________, immediacy, ___________________, and _______________________________.
contingency, size, deprivation
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continuous, discontinuous
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shaping
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successive approximation
Professor King gave Margo, the star basketball player, the assignment of composing a poem to hand in every day of the semester. He read the poem and returned it with praise for the good aspects of it the next class period. He praised only the good features of the poems. He was careful not to provide too much praise. His praise seemed to be very important to Margo. In spite of his careful procedure, Margo's poetry writing did not improve. What principle of effective reinforcement, if any, did he neglect: ________________________.
immediacy
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variable-ratio