The Developing Person stage starts of with the prenatal stage which is the conception of a baby. This is when the sperm cells of external image 071213101352-large.jpg male fertilize the egg cells of a female through sexual intercourse. The combining of these two cells is called the zygote. This period of the zygote last for about two weeks where it grows in the mother’s uterus so it could obtain food through it. After the zygote period it goes into the embryonic period where the mother’s placenta protects the embryo from teratogens which are harmful agents. About the fourth month of conception the embryo is now consider a fetus
Fetus
Fetus
which last up to birth. In this period is when the fetus starts to move such as kicking and moving around in its mother stomach. At this point of the pregnancy you actually sleep and start feeding off on what your mother inputs into her self. Also the fetus started to develop brain cells and many other vital tissues.
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After the Prenatal Stage, the infancy stage begins. This stage last from the moment you were bornexternal image kelley_ryden_photography_1.jpg to the age of two. Here the infant uses it three instincts in order to survive which are grasping, roofing, and sucking. It holds on onto anything, turns towards anything that brushes it cheeks and sucks on anything that gets in its mouth. At the fourth month it has obtain physical skills such as being able to sit with support, move its legs and arms. It can also turn over and follow objects with their eyes. By the sixth month the infant will be able to sit on its own for no more then a minute, and grab small objects with its open hands. While the ninth month it can sit for a while, take small steps or sit up with the help of mommy or daddy. Finally it could be able to walk at the age of one.
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Piaget
Piaget
According to Piaget, during the infancy stage, the infants get to know the world through their sensory and motor interactions. They learn stuff by touching, seeing, tasting, and hearing. As they also believe in that if you don’t see it then it does not exist. For example if a six month old baby sees a car but then they put a blanket over then the baby perceives as nonexistent this would be called object permanence. external image babyhandcr.jpg The baby also develops a secure attachment with their mother so they only allow their mothers to hold because if a stranger holds them then they will feel anxious. Piaget also believed that during the time a child goes to preschool he/she is in the preoperational stage. Here the child is too young to perform mental problems. For example the child will think that a tall cup of milk is too much but if you pour it into a small wide cup then the amount will seem acceptable since they couldn’t understand the concept of conservation.
By the time a child is seven years old he is able to perform concrete operations. Now they are able to understand the concept of conservation. They can also perform arithmetic math by the age of eight. A child of age twelve is in the formal operational stage. Here he can do abstract thinking solve hypothetical problems. external image Piaget_1.jpg




While some agree with Piaget, Lev Vygotsky
Lev Vygotsky
Lev Vygotsky
believed that Piaget underestimated the ability of people. He believed that infants could do some things with no help at all, other things with the help of others, and then there were those things that you couldn’t do at all.
Erickson
Erickson

Erikson had eight different stages of development. Starting with Trust vs. Mistrust is during the time a child is born up to the age of two. During this stage the infant will develop a trust with the person who he or she sees provides him with its needs and is reliable, shows affection and shows that it cares. After this stage it would be Autonomy vs. Shame and Doubt which is from the age of two to age three. At this stage the child learns to go to the toilet for personal needs. If he succeeds he will feel autonomy but if he fails he will feel shame and doubt. At the age of three and up to five years the child is in the Initiative vs. Guilt stage where he mainly focuses on exploring. If they have somewhat control over their environment then they will have a feeling of purpose but if they don’t tend they feel guilty. As the child goes onto the Industry vs. Inferiority from the age of six to the age of eleven he will focus on school. Here if he does well he will feel competent but if he doesn’t he will go into the feeling of inferiority. When the child reaches his years of twelve to eighteen which are the adolescent he will be in the Identity vs. Role Confusion. During this stage he will try to gain a sense of personality in which if he succeeds he will be true to himself but if he fails he would have confusion in role. After he completes this stage he becomes a young adult which is from the age of 19 to the age of 40. At this point he is in the Intimacy vs. Isolation Relationships in which he focuses on finding his true love. If he finds happiness and love he will be in a good one but if fails he will most likely be alone all his life. The Generativity vs. Stagnation Work and Parenthood is from the age of 40 to 65 years old. The now man will work to reproduce or to leave a print that he was there. He needs to do this in order to feel that he has accomplish things otherwise he will be in shallow involvement in his life. Finally the last stage is when the man is 65, at the stage he is in his Ego Integrity vs. Despair. Now the man will reflect on his life and see if he has done all of the things he needed to do in order to have a sense of fulfillment or else he will regret his life.


Related Chapters:
The Story of Psychology
Motivation and Work
States of Consciousness
Social Psychology
Abnormal Psychology
Memory