To explain or not to explain: the effects of personal characteristics when explaining music ...
summary
A web music recommender with six tweakable attributes and optional bar-chart explanations runs a within-subject MTurk study (71 valid users, 20 pilot) comparing explained vs baseline recommendations. Explanations increase confidence and help low need for cognition users, but reduce confidence for high need for cognition users; low visual literacy users play fewer tracks and gain precision; slider interaction combined with explanations yields better playlist quality; explanations also slow browsing.
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