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SUMMARY The same facial expression will be seen as expressing different types and degrees of emotion, depending on what other faces are seen. A relatively neutral face seems sad when presented alongside a happier face, happy alongside a sadder face. A relatively unhappy face seems sad when presented alongside an angrier face, angry alongside a sadder face.(More)
Correlations between theoretical predictions and data can be higher for incorrect than for correct models, as illustrated by analyses of two sets of hypothetical data. This fact raises questions about the conclusions of recent studies that use correlation as an index of fit. Functional measurement provides a sounder basis for model evaluation by placing(More)
Judgments of the numerousness of dots vary inversely with the size of the background on which the dots are presented. An expectancy-contrast model is proposed and tested in an experiment with this size-numerosity illusion. According to the model, the expectancy for numerousness depends upon the subjective correlation between size and numerosity;(More)
Systematic manipulation of the context for category ratings of psychophysical stimuli has isolated two dominating factors: 1) the range of contextual stimuli, and 2) the relative frequencies of stimuli within this range. The effects of these two factors upon the rating or judgment of any particular stimulus can be described as a weighted average between the(More)
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