Science and Human Behavior, Chapter 9: Deprivation and Satiation, Quote 4

“Needs and wants are likely to be thought of as psychic or mental, while hungers are more readily conceived of as physiological. But the terms are freely used when nothing with these dimensions has been observed. Sometimes the inner operation is inferred from the operation responsible for the strength of the behavior . . . On the other hand, it is sometimes inferred from the behavior itself . . .” (p. 143)

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