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Adolescence is probably the most controversial of all periods of human development. Since the beginning of this century literally dozens of theories have been...

in attribution theory, the principle that if someone performs an action when there are known constraints, his or her motive for acting must be...

the timeframe of growth when physical maturation is has been attained and specific biologic, mental, cultural, individual characteristics, and various other developments concerned with...

as an integral part of Jean Piaget's theory of cognitive development, this type of thinking is most often seen in children who are in...

A form of “socio- pathic personality disturbance” characterized by impulsive, egocentric, unethical behavior.The antisocial, or psychopathic, individual acts as if he has no conscience,...

n. refers to an irrational and dramatic thought pattern, characterized by the tendency to overestimate the potential seriousness or negative consequences of events, situations,...

instruction or training using audio aids, visual aids, or both. Examples of such include films, slides, filmstrips, videotapes, audiotapes, television, and computers. This is...

an extraneous and unintended factor affecting the results of research, especially one associated with the researcher (e.g., expectations, personality) or with the participant (e.g.,...

a linguistic sign, for example, a verbally spoken word, that bears no obvious resemblance to the thing or concept signified. Because the vast majority...

motivation stemming from the expectation or desiring of a reward, which is a condition for goal-directed behavior.