The purpose of this study is to examine the dimensional structure which forms impression of the teacher's posture in real instructional situation transmitted to participants. We clarified how three factors, sex factor of postures, sex factor of participants and kinds of posture stimulations effect decoding the dimensional structure. Participants (N=80) were required to the experiment using posture stimulations in instructional situation. The findings were as following. Dimensional structure of posture stimulations in instructional situation consists of three aspects, "status", "tension", and "affection". In addition, we examined effects of the three factors to decoding posture stimulation. We clarified how the combinations of three factors effect decoding each dimensional structure.