Sensitive Periods in Development

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Sensitive Periods in Developement The child does not grow uniformly and homogeneously like a crystal or a carrot, but by stages or phases, which succeed one another and which, differ from one another. For proper growth and development it is necessary that the potentialities for developing human relationships with which the infant is born be exposed to the organizing influences of another human being. Accumulating evidence indicates that there exist critical developmental periods during which the organism is ready for differential development, within which periods it must receive the proper stimulations if it is to develop adequately. These critical developmental periods may be broadly outlined as follows: 1) The period during which the infant is in process of establishing an explicit cooperative relationship with a clearly defined person, the mother; this is normally achieved by five or six months. 2) The period during which the child needs the mother as an ever-present support and companion; this normally continues to about the end of the third year. 3) The period during which the child is in process of becoming able to maintain a fourth and fifth years, under favorable conditions, such a relationship can be maintained for a few days or even a few weeks; after seven or eight years of age such a relationship can be maintained for longer periods, though not without some strain. The capacity whereby the child simultaneously develops his own ego and super-ego and the capacity to maintain relationships with removed objects is variously described as identification, internalization, or introjection, sinceit is according to the pattern set by the parents that the functions of the ego and super-ego are incorporated within... ... middle of paper ... ...ifferences between phonemes is not restricted at birth to the language that the child hears at home. Japanese babies can hear the difference between /r/ /l/ even though monolingual Japanese adults find this difference very difficult to detect. But the language that the baby hears soon starts to have an influence because, by about 8 months, babies begin to show a marked decrease in their ability to distinguish between phonemes that are not present in the language that they hear around them. Conclusion What the developing child apparently needs is a stable and continuous development in relation to its mother or mother-surrogate. The stability and continuity must be prolonged, and not too much or too often interrupted. Deprivation leads to isolation and asocial behavior, satisfactions interspersed with deprivations lead to ambivalent and antisocial behavior.

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