One of the grand theories of human development is the psychoanalytic theory created by Freud and Erikson. The psychoanalytic theory (also known as psychosexual) “holds that irrational, unconscious drives and motives, often originated in childhood, underline human behavior” (Berger, 2011 pg.39). Freud believes that nature (genetics) and nurture (environment) have a large impact on the child’s development. Also most of the decisions a child makes comes from their id. A child’s id is the “raw unorganized inborn part of personality that is given at birth and is often driven by pleasure” (Berger, 2011 pg.39). Erikson however, says that most decisions are driven by their ego. The ego is the rational/logical part of your personality and your super ego is your conscious.
Another grand theory of human development is the cognitive theory. The first major cognitive theorist was Jean …show more content…
Stage 1-Germinal. Germinal stage is the first two weeks after conception. This is where there is rapid cell division and cell differentiation begins (McPherson, 2004). “An estimated 60 percent of all zygotes do not grow or implant properly and thus do not survive the germinal period” (Berger, 2011 pg. 95). Most women do not even know they are pregnant because many of the organisms are abnormal.
Stage 2-Embryonic. Embryonic stage begins after implantation (3 weeks) and last eight weeks after conception (McPherson, 2004). The embryonic stage is when the body basics such as all of the body structures and organs. “About 20 percent of all embryos are aborted spontaneously, most often because of chromosomal abnormalities” (Berger, 2011 pg.95). During the Embryonic stage there are early miscarriages. At the end of the embryonic stage the embryo now has facial structures, external sex organs, the heart development ends and the brain can now signal muscles to