Developmental psychology is a scientific approach that describes growth, change and coherence throughout life. Developmental psychology looks at how one's thoughts, feelings and behavior change throughout his or her life.An important part of the theories within this discipline focus on development in childhood; because it is the time that elapses throughout the life of the individual when the most change occurs. Developmental psychologists examine broad theoretical domains such as biological, social, emotional, and cognitive processes. Prenatal development refers to the process of development of a baby from a single cell after pregnancy to embryo and then to a fetüs. The average time for completion of prenatal development is …show more content…
This phase of Prenatal development is marked by the longest duration and surprising change and growth. During the third month of your pregnancy, the sexual organs begin to differentiate and form all parts of the body until the end of the moon. At this point, the fetus weighs about three grams. The fetus continues to grow both in weight and height, although a large proportion of physical growth occurs in later stages of the pregnancy.The end of the third month marks the end of the first three months of your pregnancy. During the second trimester or four to six months, the heart rate gets stronger and other body systems are further developed. Nails, hair, eyelashes and footprints. Perhaps the most obvious size of the fetus is dramatically increasing and is about six times higher. While providing uterine protection, the fetus is indirectly connected to the outside world through the mother. Many mother-related factors can harm the fetus: poor nutrition, alcohol use, smoking, the use of some prescription or over-the-counter drugs, the use of recreational drugs such as cocaine, sedatives and drugs, X-rays and other types of radiation. Mothers who drink too much during pregnancy may have babies with fetal alcohol syndrome. Infants with this syndrome may experience problems such as small head size, heart defects, irritability, hyperactivity, mental retardation, or slowing of motor development. Newborn babies begin to recognize the world with all sense organs from the moment they are born. Newborn babies can hear, see, taste and smell and feel the