Abstract
Functional measurement methodology was applied to test theMotive×Expectancy×Value (MEV) model of human motivation. Subjects judged the value of hypothetical “games of chance” in which hunger, chance of winning a sandwich, and sandwich preference were varied along with similar information concerning a drink. Graphical tests showed excellent agreement between the data and the theoretical properties of parallelism and linear fan shape. Exact statistical tests of goodness of fit confirmed these graphical tests. Despite the complexity of the task, which required integration of six pieces of information, subjects' judgments obeyed a simple cognitive algebra. Applications of functional measurement were suggested for approach-avoidance conflict, level of aspiration, work motivation, and achievement motivation. These methods can provide exact tests of the behavior models in terms of the subjective values at the level of the individual. They thus provide a unified nomothetic-ideographic approach to motivation theory.
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