16 adult subjects performed a tactile recognition task. According to our 1984 study, half of the subjects were classified as having a left hemispheric preference for the processing of visual stimuli, while the other half were classified as having a right hemispheric preference for the processing of visual stimuli. The present task was conducted according to the S1-S2 matching paradigm. The standard stimulus was a readily recognizable object and was presented tactually to either the left or right hand of each subject. The comparison stimulus was an object-picture and was presented visually by slide in a tachistoscope. The interstimulus interval was .05 sec. or 2.5 sec. Analysis indicated that the left-preference group showed right-hand superiority, and the right-preference group showed left-hand superiority. The notion of individual hemisphericity was supported in tactile processing.
The authors examined whether the frequency of conjunction errors varied in a recognition test according to the semantic relation between 2 words. Participants studied a series of natural (meaningful) or bizarre Japanese noun phrase patterns and later completed a recognition test that contained old, conjunction, feature, and new stimuli. Participants who studied a list of natural noun phrases did not make any false old responses to unmatched (bizarre) conjunction stimuli. However, participants who studied bizarre noun phrases made as many false old responses to matched (bizarre) conjunction stimuli as to unmatched (natural) conjunction stimuli. The results of the bizarre study stimuli group indicated that bizarre noun phrases may be translated into meaningful stimuli because of mnemonic instruction. Together, the results support the hypothesis that conceptually based familiarity, not pure perceptually based familiarity, influences false old responses to conjunction stimuli.
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