Arriving ten minutes early is a behavior that psychologists have identified as a reflection of certain personality traits. In a 2006 study published in the Journal of Research in Personality, a team of German psychologists—Mitja Back, Stefan Schmukle, and Boris Egloff—examined the actual arrival times of 92 students who were unaware they were being observed. The research aimed to uncover how personality traits relate to punctuality, moving beyond self-reported behavior to measure real-world actions. Participants first completed a personality questionnaire assessing the five major traits in psychology: conscientiousness (being organized and responsible), agreeableness (being kind and cooperative), neuroticism (tendency toward anxiety), extraversion (sociability), and openness (curiosity and creativity). A few days later, they attended a scheduled group experiment, believing they were participating in the study. However, the researchers were actually tracking how early or late each person arrived. Three key measures were recorded: arrival time, how early they arrived, and how late they arrived. The study found that conscientiousness was the strongest predictor of punctuality—people who are organized and plan ahead tend to arrive on time more consistently. Agreeableness, which includes being considerate and cooperative, was specifically linked to arriving early. The researchers suggest that this might reflect a desire to be polite, ensuring others are not kept waiting or that the group can start on time. Interestingly, neuroticism—associated with anxiety and sensitivity to judgment—also predicted early arrival. For some participants, arriving early was less about being helpful and more about reducing anxiety, such as fear of being judged or disrupting others if they arrived late. It is important to note that this study has limitations. It involved only 92 German university students and was conducted in a single context, meaning the findings may not apply broadly. The observed links between personality traits and arrival behavior are statistically modest, so they should not be used to judge individuals. Instead, the study highlights that arriving early is not just a matter of discipline but may reflect a range of motivations, from kindness to anxiety.