“…In the studies using a mirror drawing test with an error signal as performance test, sub jects with high trait anxiety showed decrement of performance, especially in the early stage of learning, while the antianxiety drugs diazepam or bromazepam, 5 mg, lessened this decrement (Nakano, S., Ogawa, N., Kawazu, Y. et al, 1978 ;Nakano, S., Gillespie, H. K. and Hollister, L. E., 1978 ; According to our experience, the ideal situation would be the choice of subjects with high levels of trait anxiety who are subjected to a task known to evoke high levels of state anxiety (Nakano, S., Ogawa, N., Kawazu, Y. et al, 1978 ; Nakano, S., Gillespie, H. K. and .…”