Examlex
In which of the following stratification systems are people bought and sold as commodities?
Birth Cohort
A group of people who were born during the same period of one or several years and who are, therefore, all exposed to particular historical events at approximately the same age.
Fixed Ratio
In operant conditioning, a schedule of reinforcement where a response is rewarded after a set number of responses.
Variable Interval
In operant conditioning, a reinforcement schedule where responses are rewarded after unpredictable time intervals.
Pop Quizzes
Surprise tests given without prior warning to students, usually to assess their attentiveness or retention of learned material.
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