What is Human developmental periods?
'''The period of human development''' – a concept derived from psychoanalysis, in which the leading role is given to the conscious actions of the individual under the influence of the environment. Development is understood as an evolutionary process in which an individual achieves an increasingly higher level of integration through psychosocial crises. It is accomplished by solving difficulties related to changes on the levels on which it takes place: biological, psychological and social. Development is therefore the mutual adaptation of the individual and the environment. [[File:Baby.jpg|thumb|Baby]] == Ego == The ego is a configuration that includes and controls conscious activities that synthesize and integrate past experiences with tasks currently appearing in the perceptual-cognitive field of the individual. * It is equivalent to id and superego. * The basic processes of the ego: play, speech, thinking and acting. The driving force behind development is the occurrence of opposing tendencies and aspirations in man. This polarization occurs in two dimensions: # Striving for progression - striving for regression: * Progression - implies the desire to live, to obtain gratification, the desire to expand beyond self * Regression - a return to the stage of less psychological complexity, implies a tendency to self-destruction # Bisexual polarization: * It consists in the co-occurrence of the male and female elements. Development occurs in successive phases. Its course depends on the experience previously acquired by the individual. In each phase, a new system of biological, social, psychological obstacles emerge, causing crisis and exacerbating the struggle between the aspirations for progression and regression. To move to the next phase, all obstacles must be overcome. The solution to a psychosocial crisis occurs when the obstacles and pressures that have arisen at a given moment are incorporated into the structure of the ego as elements of a harmonious whole. Then the relative equilibrium is not so much