AN EXPERIMENTAL CRITIQUE OF THE METHOD OF CONSTANT STIMULI AND SOME ALTERNATIVE PROCEDURES
WASHINGTON UNIV SEATTLE PSYCHOPHYSICS LAB
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Some experiments investigating the constant error demonstrate that the method of constant stimuli is especially unsuited for studying such small effects of discrimination. The nature of the confounded data from the classical procedure suggests that the difficulty is of a fundamental nature and can be expected to influence the data under less stringent conditions as well. Some data from the literature are offered to support this view. Several alternative procedures are developed and evaluated experimentally, the most promising of which is shown to be a form of the XAB method.