[Changes in the galvanic skin reaction and speech parameters of 8- to 9-year-old children during play]

Changes of parameters of the speech signal (fundamental frequency, Ef, and evaluation of the frequency of the first formant, n(0)) were compared to the skin galvanic (SGR) reaction shifts in 8-9 years old children during playing computer games under different conditions: 1) playing using the child's own strategy; 2) that under the conditions of time deficits; 3) that with minimization of errors. In each playing situation a child had 3 trials. Parameter SGR-1 reflected SGR amplitude changes depending on a trial number, SGR-2 reflected those depending on the beginning, the middle, of the end of a battle with an enemy. At playing under the conditions of time deficits there was an increase of emotional stress and that of the number of negative emotional reactions of children being accompanied by worsening of playing activity parameters. Ef and SGR-2 were mostly expressed in comparison to other playing situations. The greatest changes of n(0) and SGR-1 were observed at playing with child's own strategy. Emotional stress in the latter situation was minimal, number of positive emotional reactions was comparable to that in the third playing situation, and negative emotional reactions were absent. The data obtained point to the structural change of motivation at complicating the situation (at playing with time deficits).