The effects of informations about supervisory behavior and group productivity on evaluation of leaders were investigated. After read the description of the group productivity, leader's gender and supervisory behaviors of one specific group, 268 male and 139 female undergraduate students who were respectively assigned to one of 8 experimental conditions -- group productivity (High/Low) X leadership type (P/M) X leader's gender -- evaluated the leader's behavior using LBDQ, and also his/her personality and aptitude. Evaluations of leadership behavior were analyzed into initiating structure, consideration, and production emphasis. The results showed strong influences of productivity information on rating scores on the first two factors but production emphasis factor. As to these results, the implicit leadership theory was discussed.