Stimulus value : Its effect on human binary prediction

Date

1968

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Abstract

The experiment was designed to investigate the effect of assigning unequal values to stimulus events in a binary prediction situation. An underlying assumption in studies of two-choice probability learning has been that the stimulus events, in and of themselves, have no effect so long as they are easily dlscrlminable. Three levels of stimulus value (High, Low, Equal), in two payoff conditions (Payoff, No Payoff) were tested at probability levels .67-.33 and .50-.50. The data indicated that stimulus value had a significant effect. However, the predicted direction of this effect was not confirmed. In the equal probability condition, there were no significant differences as a function of either stimulus value or payoff; predictions of high frequency stimuli were affected by stimulus values.

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Keywords

Choice (Psychology), Conditioned response

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