Future Shock

by Alvin Toffler

Psychophysiologists studying the impact of change on various organisms have shown that successful adaptation can occur only when the level of stimulation—the amount of change and novelty in the environment—is neither too low nor too high. "The central nervous system of a higher animal," says Professor D. E. Berlyne of the University of Toronto, "is designed to cope with environments that produce a certain rate of ... stimulation ... It will naturally not perform at its best in an environment that overstresses or overloads it." He makes the same point about environments that understimulate it. Indeed, experiments with deer, dogs, mice and men all point unequivocally to the existence of what might be called an "adaptive range" below which and above which the individual's ability to cope simply falls apart.

Adaptive Range of Stimulation