To investigate the validity of the trait, Energetic, two studies were conducted in which trait ratings of Energetic and objective measures of performance were recorded. The first study used naive raters (N= 55) who observed pairs of subjects perform in a laboratory setting. There was 84% agreement (p < .001) among the raters as to which person was more Energetic, and people rated as more Energetic performed more energetically on the objectively measured tasks (p < .001). The second study used peer ratings of Energetic and objective measures of energetic behavior in a laboratory setting. There was high agreement among the peers in ratings of Energetic, r = .95 (N = 30) and r = .93 (N = 31) for two groups. Nine men from the upper-quartile and nine men from the lower-quartile of the Energetic scores were tested in the laboratory and were given a structured interview regarding their physical activities. The correlation between peer ratings and laboratory performance was .56 and between peer ratings and the interview data, .64. The results support the position that trait ratings can be valid indicators of regularities in behavior. The procedures used in these studies could be a generally useful model for investigations of the validity of trait ratings.