Psychological portraits, including personal and mental feature depending on degrees of lateralization of under study sign are formed. Analysis of these psychological portraits allows to draw a conclusion on that a mental ability amongst senior schoolchildren are developed better among strong and average left-handed student, accordingly them the level of knowledge is high. The voltage adaptation mechanisms in the manner of manifestations asthenia and moderate nervously-psychic voltage in is observed group#s left-handed, strong and average left-eyed, weak right-eared in the process of educating.