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The role of the experimenter in a concept learning task
Since the Renaissance scientific experimentation has been plagued by the experimenter's effect upon the observation, collection, and reporting of data. Only recently, however, has this variable been recognized as one that ...
An investigation into the relationship between positive verbal reinforcement and simple reaction time in children
Two experiments were conducted to test the following hypotheses: a) there is no systematic increase in speed of simple reaction time (RT) over trials if no positive verbal reinforcement is given; b) the reinforcer "good" ...