The most frequently used evaluating instrument for evaluation training in psychiatry is the Thackrey Scale (1987) that focuses on coping with violent patient in psychiatry. There is no such official evaluation scale for this problem in the Czech Republic. We wanted to examine the internal consistency of 3 questionnaires (Thackery scale self confidence, A global measure of perceived stress and Modified Thackery scale Vevera-Pekara) and to verify the convergent validity of Adapted Thackery scale Vevera- Pekara with the original Thackery scale. We measured internal consistency was assessed with Cronbach’s alpha, Guttman’s lambda and McDonald’s omega and the the correlation of Adapted Thackery scale with Thackery scale. We verified that our modified Thackrey scale (by Vevera & Pekara) is a reliable tool for measuring the effectivity and positive impact of our training program aimed at coping with aggressive and violent patient when we exclude the questions about frequent of violent incidents.