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An Outcome Study Includes Three Groups of Depressed Clients

question 49

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An outcome study includes three groups of depressed clients. Group I receives an SSRI along with cognitive therapy. Group II receives only an SSRI. Finally, Group III receives a placebo. All groups complete a paper-and-pencil inventory of depressive symptoms both at the outset of the study and at its conclusion. Depressive symptoms are reduced among all three groups. However, the reduction is greater for Group I than for Group II, and for Group II as compared to Group III. Which of the following conclusions is INCORRECT


Definitions:

Partial Reinforcement Effect

The tendency for a response that is reinforced after some, but not all, correct responses to be very resistant to extinction.

Continuous Reinforcement

A method of learning in which a behavior is reinforced each time it is performed, leading to faster acquisition of the behavior.

Continuous Reinforcement

A reinforcement schedule in which every occurrence of the instrumental response (desired response) is followed by the reinforcer.

Fixed Interval

A schedule of reinforcement where the first response is rewarded only after a specified amount of time has elapsed, encouraging a pause after receiving the reward and a higher rate of response as the time for the next reward approaches.

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