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The current study utilizes relationship models and theories to file down how, why, and when people develop evaluations of others at zero acquaintance. A key aspect of the study is determining the relationship between Big Five traits and judgment accuracy, as well as how it fared over time (2 months). We took a sample of two-hundred and six participants and had them rate a target with closed and open-ended questions and rating scales. We found that Extraversion was the most salient and most accurately judged at zero acquaintance. Further, Neuroticism was noted most often in open-ended questions and only became detectable after several weeks. Conscientiousness and Openness were also not detected until several weeks had passed. Most notably, Agreeableness proved to have very early detection and judgement accuracy which remained the most stable over time.