[Character of behavior in an avoidance situation as a criterion for evaluation of the typologic characteristics of rats].

Comparison of three different shapes of behaviour in rats reveals following correlations: rats elaborating avoidance of closed space in response to cries of another individual (first group) significantly more frequently come into the centre of the "open field", exhibit greater alimentary activity in the new chamber in a state of moderate hunger and elaborate an alimentary reflex more readily as compared with the animals, which steadily prefer closed space (third group). But they elaborate inhibition of the motor alimentary reaction with difficulty. High stability of the elaborated behaviour (as expressed in the percentage of conditioned reactions after a three-week stressing effect) was exhibited by the animals of the first group, and non-stability by those of the third and second groups. The latter one, occupying a "middle" position was characterized by the highest level of motor restlessness in the avoidance situation, which is regarded as an analog of the alarm property.