tl;dr: Data Colada analyzed the original data files from Ariely and Wertenbroch's influential 2002 procrastination study (2,100+ citations) after a failed replication, and found strong evidence of fabrication: implausibly large effect sizes (d=2.5), duplicate observations paired across conditions, missing correlations between variables that should be highly related, and self-reported minutes lacking the human tendency to round. Both original authors have now asked Psychological Science to retract the paper; Ariely claims insufficient memory and records to explain the anomalies.