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Our society is increasingly relying on digitalized, aggregated opinions of individuals to make decisions (e.g., product recommendation based on collective ratings). One key requirement of harnessing this "wisdom of crowd" is the independency of individuals' opinions; yet, in real settings, collective opinions are rarely simple aggregations of independent minds. Recent experimental studies document that disclosing prior collective ratings distorts individuals' decision making as well as theirdoi:10.1089/big.2014.0063 pmid:27442755 fatcat:fra7zglrrfd63hnd5yuhl25xai