Essay on Sensitive Periods in Developement - 1258 Words

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†¦show more content†¦2) Maternal deprivation for a period varying for days within the first and second years, and weeks or months during the third and fourth years. 3) Changes from one mother-figure to another during the first four or five years. With respect to the reality of the critical developmental periods, it is, of course, well known that such critical developmental periods exist in the development of the body, with the principle well established that the earlier the interference with their development the more widespread will the disturbance in growth be. Tissues must reach a certain stage of differentiation before they can respond; later such tissues achieve a certain relative fixity, so that they can yield. Prenatal environmental influences For many years , in fact, it was believed that the baby in the uterus was completely insulated form all outside influences, but now we know that is not entirely true. Environmental influences ranging from radioactivity and stress in the outside world to drugs, chemicals, hormones, and viruses in the mothers bloodstream can affect prenatal development. Even though the placenta acts as a filter, keeping the blood of the mother and the fetus from mixing, a number of potentially dangerous substances can pass through it. And, of course, if theShow MoreRelatedApproaches to Care for Hypertensive African Americans2389 Words   |  10 Pagesother chronic problems, it can be understood that a person can develop hypertension and go living with his or her normal routine life without clearly noticing its occurence and growth. In this manner, hypertension tends to go undetected for longer periods of time until it causes other chronic diseases in the body. Sinc e African Americans are more prone to hypertension, the development of chronic issues such as kidney problems and heart diseases is more common in them as compared to their white counterpartsRead MoreAlphabet Swoth and Pestel Analysis2061 Words   |  9 Pagesdeficiencies in present resources of the organisation, as they limit its effectivness, prgress, developement and expansion. 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