In this paper the problem of "impulsive" and "self-control" behaviour in animals and the experimental models for their assessment are discussed. It is pointed out that a widely accepted model for assessment of impulsive behaviour in animals predominantly measures their ongoing properties of impulsivity/self-control independently on belonging them to the certain types of higher nervous activity. In contrary, our model at the first instance assesses the typological characteristics of animals, including impulsivity and self-control, by their abilities to perform or not to perform an appropriate behaviour. The differences in the data obtained by these two different models and the possible reasons for it are discussed.
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