Impression formation as a function of source credibility and the polarity of information.

Abstract
40 male undergraduates were presented with sets of pairs of adjective sentences, each pair describing a hypothetical person to be rated on "likableness" using an 8-point scale. Both the adjective sentences within a pair were of the same valence but 1 was only moderate in value while the other was extreme. A source identified by occupation and prescaled as being of either high or low credibility was designated for each sentence. Within a pair of adjective sentences of positive value the weight or influence of each sentence was shown to be a function of the credibility of the source supplying that sentence. However, for negative adjective sentences the weight of the moderate sentence did not appear to vary reliably as a function of the credibility of the source supplying that sentence. (PsycINFO Database Record (c) 2016 APA, all rights reserved)

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