Time of Day Selection Bias on Online Platforms: Personality and Clinical Differences Between Mturk Participants Who Are Active in the Evening and the Morning.

Little is known about selection bias on online platforms. Two studies (morning/evening) were conducted on MTurk. Participants taking the study in the evening differed from those taking the study in the morning on a constellation of personality and clinical outcomes, including eveningness, anxiety, procrastination, internet compulsion, and hedonism, among others.