activity (from Latin activitas, activas = act) is a facet of psychology. It mediates the link of the subject with the real world.

The activity is a generator of the psychic reflection which, in turn, mediates the activity itself. Following Merani, we can understand it in the following way:

It is always linked to a certain need that provokes the search. During the performance of collective and individual activity, the psychic reflection of reality takes place and consciousness is formed.

Purposeful conscious human activity is the substance of human consciousness because it is an objective process as much as all the processes of nature.

In psychology, external object activity and internal activity are studied, where the latter is secondary because it is formed in the process of internalization of external object activity, forming an internal plane of consciousness. This process of internalization was interpreted by Lev Vygotsky as a passage of the higher psychic function from the external social level to the internal individual level of its realization.

The activity is closely interrelated with the concepts of consciousness and the ideal "Ideal (philosophy)").

Activity carried out by a certain person somewhere, whether physical or psychological.