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...

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...

VAGINA DENTATA

with regard to psychoanalytic theory, the unconscious fantasy that the vagina is a mouth housed with teeth which can castrate the male party. With...

VALUE

noun. 1. the mathematical strength or amount of a variant. 2. a moral, social, or aesthetic standard accepted by a person or culture as...

VARIABLE-INTERVAL REINFORCEMENT SCHEDULE (VI SCHEDULE)

with regard to free-operant conditioning, a form of interval reinforcement wherein such displayed for the first reaction following the passing of a variable period,...

VASCULAR DEPRESSION

a major depressive episode which takes place soon following the start or remediation of cardiovascular illness or which is presumed to be elicited by...

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