Method of examining physical organs by scanning them with sound waves- for example, scanning the womb and thereby producing a visual outline of the fetus.
An early form of vocalization that appears between 4 and 6 months of age.
A conversational tactic used by adults in speaking to young children in which they respond to a child's utterance with a more grammatically complete expression of the same thought.
A defense mechanism that involves retreating to an earlier, less traumatic stage of development.
The idea that the mind of an infant is a "blank slate" and that all knowledge, abilities, behaviors, and motives are acquired through experience.
A correlation between task performance and optimal level of arousal.
A system of beliefs and values that ensures that individuals will keep their obligations to others in society and will behave in ways that do not interfere with the rights and interests of others.
In Bronfenbrenner's bio ecological approach, settings not experienced directly by individuals that still influence their development.
The age at which a child is performing intellectually, expressed in terms of the average " age at which normal children achieve a particular score."
Condition of being overweight.
Discrimination against people based on their skin color or ethnic heritage.
The shorter of the two sex chromosomes; normal male ones have one Y chromosome, whereas females have none.
The physical changes that occur from conception to maturity.
Removing unacceptable thoughts or memories from consciousness.
A emotional response to loss.
A psychoanalytic term for the inborn component of the personality that is driven by the instincts or selfish urges.
A combination of all those features that a society associates with or considers appropriate for being a man or a woman.
The score appearing most frequently in a set of observations; a measure of central tendency.
The cells that hold neurons together and facilitate neural transmission, remove dead and damaged neurons, and prevent poisonous substances in the blood from reaching the brain.
The emotional intelligence.
The life threatening disease in which the human immunodeficiency virus destroys the immune system and makes victims susceptible to rare infections.
Psychoanalytic term for the rational component of the personality.
Take, hold or deploy, means of accomplishing a purpose or achieving a result.
The concept that older people cope with aging through a strategy that involves focusing on the skill most needed,practicing the skills and developing ways to avoid the need for declining skill's.