VIGOTSKY TEST

A test of conceptual thinking in which the subject classifies blocks according to different characteristicsdeveloped by the Soviet psychologist L. Vigotsky and introduced in...

VISIBILITY CURVE

A graph representing the sensitivity of the eye to different wavelengths of light. Two types of curves are usually constructed, one for daylight vision...

VISIBLE SPECTRUM

The range of electromagnetic waves visible to the human eye.Our sense of vision is activated by radiant energy emitted or reflected from objects. This...

VISUAL DEFECTS

Common visual defects so often affect behavior and adjustment that they are usually included in the field of psychology. Most of them are due...

VOLUNTEER WORKERS

In recent years mental health clinics and mental hospitals have been using more and more volunteersnot only because of the shortage of personnel but...

VENTILATION CONDITIONS

Atmospheric conditions—primarily temperature, humidity, and air flow—constitute an important problem in industrial psychology and human engineering, since they have considerable influence on productivity, accident...

VACUUM ACTIVITY

the event occurring of a fixed-action pattern during the absence of the usual exterior stimulant which elicits the pattern. This is thought to be...

VALIDITY GENERALIZATION

a quantitative summation of all empirical research pertaining to the validity of a specific gauging tool.

VARIABILITY

noun. 1. the quality of being subject to modification or differentiation of actions or feelings. 2. With regard to statistics and experimental model, the...

VARIMAX ROTATION

in factor analysis, a technique involved in orthogonal rotation which tries to enhance the amount of near-0 and near-1 loadings in each factor.

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