Consumers’ trust in the average user rating as a cue for objective quality is an 'illusion of validity': user ratings lack objectivity, are often based on insufficient sample sizes, and are higher for more expensive products and premium brands, new study finds.

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Consumers’ trust in the average user rating as a cue for objective quality is an 'illusion of validity': user ratings lack objectivity, are often based on insufficient sample sizes, and are higher for more expensive products and premium brands, new study finds.