EFFECT OF A PRECEDING ANCHOR UPON THE CATEGORICAL JUDGMENT OF SPEECH AND NON-SPEECH STIMULI

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The anchoring effect in auditory perception was investigated. Three experiments were carried out in order to examine the effects of the relative position between anchor and stimulus set on the stimulus continuum as well as on the time axis. Furthermore, the influence of stimulus attributes and complexities was investigated using pure tones, single resonance tones with formant structure, and synthetic vowels. The results indicated that the shift of the category boundary caused by the anchor showed a continuous transition from assimilation to contrast in almost all the experiments, and that contrast became more intense with increased stimulus complexity. A model was presented to account for these results, taking into consideration two kinds of short-term memory.
公益社団法人日本心理学会の論文