Psychologists often forget the fact that the measure of time carries a
different weight at various levels of human behavior. In terms of rea
ctions, the time parameter is the primary and, in terms of actions, th
e secondary indicator of optimal functioning. In case of responses, i.
e. behavior affected by specific and non specific learning, the time:
parameter is an indicator of the functioning of mental processes, begi
nning with detection and ending with mental operations. The author has
compiled years of experiments to create a schematic model. This model
depicts the ratio of quantitative to qualitative parameters at indivi
dual behavior levels: reaction time - erroneousness, response time - r
elevancy, decision time - aim of the action. All the above is illustra
ted by examples from practice.