This study examined if there were characteristic differences between play therapy students and non-play therapy students in training. Specifically, this study was designed to explore what, if any, characteristic differences between play therapy students and non-play therapy students in training exist in the following two areas: (a) personality variables, as measured by the NEO Personality Inventory-Revised (NEO PI-R) and (b) attitude toward children, and measured by the Barnett's Liking of Children Scale (BLOCS). Additionally, this study examined whether certain personality traits and the general attitude toward children for the play therapy student group correlated with the play therapy students' effectiveness ratings assigned to them by their play therapy supervisors. This study found statistically significant differences at the .05 alpha level between the play therapy (N=105) and non-play therapy students (N=79) in training in both the Extraversion personality trait on the NEO PI-R assessment and attitude toward children on the BLOCS. Non-play therapy students were in the High range for Extraversion, whereas play therapy students in training were in the Average range. According to this finding, play therapy students are less extraverted than non-play therapy students. Specifically, a statistically significant difference occurred on the Gregariousness scale of the Extraversion domain between …