The fertilized egg

Swiss developmental psychologist that studied cognitive development

Fear of strangers that infants often display

A set of expected behaviors for male and female

Stage in Kohlberg's level of moral thinking where actions reflect belief in basic rights and self-denial ethical principles

The developing human organism from 9 weeks after conception to birth

Children enjoy the game of peekaboo because they do not understand this concept

An optimal period early in the life of an organism when exposure to certain stimuli or experiences causes normal development

Kylie Jenner's dad

This stage of Erickson's psychological development is when teenagers work at refining a sense of self by by testing roles me integrating them to form a single identity
A. Identity vs role confusion
B. Competence vs inferiority
C. Intimacy vs Isolation

Result of pregnant women going heavy on the booze

Some children struggle with conservation of properties like mass, volume, and number when objects change shape

Konrad Lorenz observed this when he showed baby ducklings how to act

A period of sexual maturation in which a person becomes capable of reproducing

Stage of Erikson's stages of psychosocial development that often occurs in late adulthood. Ages of late 60s and up

"Monster makers"

In Piaget's theory, the preoperational child's difficulty taking on another's point of view

This kind of parent: "keep your room clean!" "Don't stay out late or you'll be grounded"

Nonreproductive sexual traits such as female breasts and hips or male voice and body hair

The "we" aspect of our self-concept

A decrease in responding with repeated stimulation

People's ideas about their own and others' mental states

All of our thoughts and feelings about ourselves in answer to the question "who am I?"

An enduring sexual attraction toward members of the opposite sex or the same sex

In the 1890s, the average interval between a woman's first menstrual period and marriage marking a transition into adulthood was about 7 years. This is the amount of time it takes for women to transition into adulthood today