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A portion of the cerebral hemispheres, enveloped by the cortex, and consisting of projection fibers passing upward and downward between the cortex and the...

Tests designed to identify creative talentIn recent years a number of psychologists have turned their attention to the subject of creativity, for two major...

A personality pattern disturbance characterized by frequently alternating moods of elation and dejection.The cyclothymic (or cycloid) individual tends to be extraversive, responsive, and socially...

Maltreatment of children, especially by those entrusted with their care.Child abuse has a long and sordid history, dating back to periods when the father...

A defect in the ability to discriminate between simple colors. John Dalton, the British chemist, who was himself color blind, gave the first accurate...

The study, treatment, and prevention of psychiatric disorders of childhood—including transient reactions, habit disturbances, conduct disturbances, neurotic traits, neuroses, and psychoses.The psychiatric disorders of...

A circular arrangement of chromatic colors in the order in which they appear in the spectrum. The purpose of the arrangement is to show...

The scientific study of the behavior and development of the child from the time of conception to the beginning of adolescence.At the present time...

The most important fact here is that the organism as a whole, and not just the visual system, is involved in our reactions to...

Activated or transmitted by acetylcholine. Acetylcholine is one of the two types of “chemical transmitters” in the nervous system; the other type includes adrenalin...