[Typological features of behaviour in rats]

Existence of internal correlations among parameters of the exploratory and purposive searching activity and the level of anxiety in rats were revealed. Individual parameters of exploratory activity and anxiety were measured by means of classical procedures of the open field and elevated plus maze. The resulting of purposeful search activity was studied with methods designed by ourselves, in universal problem-solving chamber. Cluster analysis has revealed hierarchical groups in populations with cognate quantitative-qualitative behavioural signs.