Quiz 4: Infancy: Physical Development

Nature and nurture are the two things that are involved in the better brain development. The areas of the brain that control sensation and moment begin as a result of maturation. But physical and sensory stimulation also spurts. Sensory stimulation sparks the cortex. This is proved by the experiment done on rats. Two sets of rats are taken into the experiment. Some rats are exposed to complex environment that involves the toys and ladders. And the control group is grown under the dark area. The result is that the rats grown under complex environment have heavier brains than the control groups. The control groups have developed shrinkage visual cortex and impaired vision. This illustrates that if they are not used they are lost. Thus adaptability allows us to develop more neural connections to different environments. So lack of sensory stimulation during critical periods can result in permanent sensory defects. Hence the blank can be filled with .

Breast feeding is the best and nutritious food for the infants till they reach the age of six months and is sufficient to them to meet the nutritional requirements. It is also being practices in many developed countries even though the commercially available formula feed is present. After six months they start feeding solids and there will not much demand from them for breast milk to compensate the hunger or the nutrition. Hence the option (b) is not correct. Then after one they start eating all the finger foods, high fiber foods and everything that are nearly the one that the adults will eat. Hence the option (c) and (d) are not correct Breast feeding is the best and nutritious food for the infants till they reach the age of six months and is sufficient to them to meet the nutritional requirements. Breast milk is beneficial to both mother and the child. It contains mother's antibodies that help the infant from distracting from the ear infections, pneumonia, typhoid and many other problems and also protects the mother from breast cancer. Hence the correct option is .

Growth usually takes place in the womb itself and most rapid growth occurs in the prenatal development. The weight increases in billions and the height to about 20 inches. By the first year there is an adequate increase in the height and weight but not that high compared to the prenatal. Infants double their weight by five months and triple by the first year. This is again different to boys from girls. Boys reach half their adult age by the second year but the girls reach the half their adult age by the time they reach 18 months. Hence the correct option is .