The concept of adaptation-level in psychological research

Vuorinen, R. The concept of adaptation-level in psychological research. Scand. J. Psychol., 1973, 14, 228–240.- Helson's adaptation-level theory (ALT) is appraised as a general theory of psychology. The reformulated Fechner law underlying ALT is shown to be untenable and the conceptual status of AL is shown to be self-contradictory. The ambiguous measures and the inconsistent theoretical definitions proposed for AL are found to limit the scope of ALT. Reasons for its flexibility and claimed heuristic value are analyzed and potential sources of confusion are suggested. Some defects of ALT are likely to be shared by other behaviouristic theories since they follow from a commitment to the strict S-R model.