ratio reinforcement

in operant conditioning, reinforcement presented after a prearranged number of responses, in contrast to reinforcement delivered on the basis of a time schedule only. In such schedules (e.g., fixed-ratio schedule, progressive-ratio schedule), the rate of reinforcement is a direct function of the rate of responding. Also called ratio schedule of reinforcement. Compare interval reinforcement.

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Psychology term of the day

January 28th 2025

summative evaluation

1. the appraisal of a student’s achievement at the conclusion of an educational program. Also called terminal assessment.

2. in evaluation research, an attempt to assess the overall effectiveness of a program in meeting its objectives and goals after it is in operation. This is in contrast to formative evaluation, which is used to help in the development of the program. Also called ex post facto evaluation. See also outcome evaluation.