Alfred Binet was a French psychologist, responsible for inventing the first intelligence test. The Binet test was designed to identify French children who were struggling in school. Binet believed that intelligence was not fixed, but that a child could grow into or be pulled to a higher level of intelligence. By taking this test, children who needed help would be given the attention they needed.  

Jeffrey Arnett coined the term "emerging adulthood" to describe 18 to 25-year-olds from developed countries who are no longer adolescents, but still lack financial independence from their parents or guardians. 

According to Piaget, children develop cognitive and social abilities in a series of 4 stages: sensorimotor (birth to 2 years), preoperational (2-7 years), concrete operational (7-11 years), and formal operational (12 years to adulthood). Egocentrism, according to Piagetian theory, refers to a child's belief that other people experience life in the same way that he or she does. Egocentric beliefs and behavior tend to decrease during the concrete operational stage; however, some egocentrism continues into adolescence. 

The word "teratogen" refers to any substance that hinders fetal or embryonic development and can cause permanent harm to the baby. Examples of teratogen-caused harm to the baby include poor bonding, fetal alcohol syndrome, and higher rates of antisocial behavior.

Twin studies measure the impact of a person's genetics on their development of a certain personality trait. Because monozygotic (identical) twins share 100% of their DNA while dizygotic (fraternal) twins share only 50%, the similarities of results from a pair of identical twins can be compared to the similarities between a pair fraternal twins to estimate the heritability of a personality trait. The heritability of personality traits is a central question of the Nature vs. Nurture debate, which revolves around the extent to which genetic or environmental factors influence development.

All of these things affect the development of a human before they are even born. Children exposed to tobacco, excessive alcohol, and narcotics in utero can be at risk for potential birth defects. The most powerful factor in prenatal development, however, is genetics. A child's genetic predisposition to deformities or childhood illnesses are a huge factor in that child's development.

Psychologist Diana Baumrind researched three types of parenting styles: authoritarian (harsh, emphasis on obedience), permissive (unpredictable, lenient), and authoritative (consistent, discussion-based, praising). The authoritative style of parenting is considered to be the most beneficial because of its consistency, predictability, and encouraging nature. As for the other answers, "strict" and "passive" parenting styles do exist, but they are not key terms for specific parenting styles studied in psychology.

Fetal Alcohol Syndrome (FAS) can have serious physical and cognitive effects. Lower IQ, eyes being far apart, ears being low down, and smaller stature usually characterize this particular disorder. 

Fraternal twins are just like regular siblings and share 50% of their genes; however they are born at the same time. Identical twins share 100% of their genetic composition.

Testosterone is present in both males and females, but it is extremely important to male’s physical and psychological development. Testosterone triggers all the male characteristics that emerge during puberty and stimulates the growth of the male sex organs during fetal development.