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631.
L A Cooper R N Shepard 《Journal of experimental psychology. Human perception and performance》1975,104(1):48-56
Subjects determined as rapidly as possible whether each line drawing portrayed a left or a right hand when the drawings were presented in any of four versions (palm or back of either hand) and in any of six orientations in the picture plane. Reaction time varied systematically with orientation and, in the absence of advance information, was over 400 msec longer for the fingers-down orientation. However, when subjects were instructed to imagine a specified (palm or back) view of a specified (left or right) hand in a specified orientation, reaction times to test hands that were consistent with these instructions were short (about 500 msec), independent of orientation, and unacompanied by errors. It is proposed that subjects determine whether a visually presented hand is left or right by moving a mental "phantom" of one of their own hands into the portrayed position and by then comparing its imagined appearance against the appearance of the externally presented hand. 相似文献
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634.
In an RT (reaction time) task involving responding to infrequent, regular signals, extraverts produced higher proportions of missed signals and lengthened RT's than introverts did. This result was only obtained after some time on task and is evidence that inhibitory states are formed more rapidly in extraverted subjects under low stimulation conditions. In a more extended version of the task, mean RT was found to be longer in extraverted than introverted subjects in the second half of the experiment though there was no significant difference between the groups in the first half. These findings are complementary to data from previous studies showing that extraverts generate stronger inhibitory potential in continuous responding tasks, or that their characteristic arousal level may be lower than that of introverted subjects. The need to distinguish between the different explanatory constructs is discussed and a simple model amalgamating the major theoretical positions is outlined. 相似文献
635.
William E. Cooper 《Attention, perception & psychophysics》1974,16(2):201-204
A contingent adaptation effect is reported for speech perception. Experiments were conducted to test the effects of an alternating sequence of two adapting syllables, [da] and [thi], on the perception of two series of synthetic speech syllables, [ba]-[pha] and [bi]-[phi]. Each of the test series consisted of 11 stimuli varying in voice onset time, a cue which distinguishes voiced from voiceless stop consonants in word-initial position. The [da]-[thi] adapting sequence produced opposite shifts in the loci of the phonetic boundaries for the two test series. For the [ba]-[pha] series, listeners made fewer identification responses to the [b] category after adaptation, while for the [bi]-[phi] series, listeners made more responses to the [b] category. The opposing shifts indicate that the perceptual analysis of voicing in stop consonants is carried out with respect to vowel environment. 相似文献
636.
Two experiments were designed to demonstrate the existence of a self-fulfilling prophecy mediated by nonverbal behavior in an interracial interaction. The results of Experiment 1, which employed naive, white job interviewers and trained white and black job applicants, demonstrated that black applicants received (a) less immediacy, (b) higher rates of speech errors, and (c) shorter amounts of interview time. Experiment 2 employed naive, white applicants and trained white interviewers. In this experiment subject-applicants received behaviors that approximated those given either the black or white applicants in Experiment 1. The main results indicated that subjects treated like the blacks of Experiment 1 were judged to perform less adequately and to be more nervous in the interview situation than subjects treated like the whites. The former subjects also reciprocated with less proximate positions and rated the interviewers as being less adequate and friendly. The implications of these findings for black unemployment were discussed. 相似文献
637.
A theorem is presented relating the squared multiple correlation of each measure in a battery with the other measures to the unique generalized inverse of the correlation matrix. This theorem is independent of the rank of the correlation matrix and may be utilized for singular correlation matrices. A coefficient is presented which indicates whether the squared multiple correlation is unity or not. Note that not all measures necessarily have unit squared multiple correlations with the other measures when the correlation matrix is singular. Some suggestions for computations are given for simultaneous determination of squared multiple correlations for all measures.The research reported in this paper was supported by the Personnel and Training Branch of the Office of Naval Research under Contract Number 00014-67-A-0305-0003 with the University of Illinois. 相似文献
638.
Lee G. Cooper 《Psychometrika》1972,37(3):311-322
A new solution to the additive constant problem in metric multidimensional scaling is developed. This solution determines, for a given dimensionality, the additive constant and the resulting stimulus projections on the dimensions of a Euclidean space which minimize the sum of squares of discrepancies between the formal model for metric multidimensional scaling and the original data. A modification of Fletcher-Powell style functional iteration is used to compute solutions. A scale free index of the goodness of fit is developed to aid in selecting solutions of adequate dimensionality from multiple candidates.This research is based in part on the author's Ph.D. dissertation at the University of Illinois at Urbana-Champaign. Computer time was provided by the Campus Computing Network of the University of California, Los Angeles. 相似文献
639.
Two experiments were conducted to clarify whether negative information presented after a person has committed himself to a course of action is capable of creating cognitive dissonance. Subjects were exposed to high or low relative deprivation either before they chose to participate in a tedious task, after they chose to participate, or without the option not to participate. The results indicated that there was greater satisfaction about participation under high relative deprivation than under low, but only when subjects were aware of the relative deprivation prior to their choice to participate. Information presented after decision was not effective in arousing dissonance. The implications of the experiments for modified views of dissonance theory were discussed. 相似文献
640.
An experiment was conducted to test the importance of self-esteem in the arousal of cognitive dissonance. Recently, Aronson (1969) suggested that the reason an attitude-discrepant speech can arouse dissonance is that it is an indecent act committed by an individual who likes to think of himself as a good and decent person. Looking at counterattitudinal behavior as a discrepancy with one's self-concept rather than as a logical discrepancy between behavioral and attitudinal cognitions differs from Festinger and Carlsnuth's (1959) original notion In the experiment reported, subjects volunteered to take a personality inventory and received either neutral, very favorable, or very unfavorable feedback In this way, subjects' level of self-esteem was raised or lowered Following this procedure, subjects were induced to record a speech that was known to be discrepant with their private beliefs. They were offered either a small or a large inducement for their statements. It was predicted that, regardless of their level of self-esteem, subjects would manifest the inverse relationship between incentive magnitude and attitude change predicted by dissonance theory The major analysis of the results, and the concomitant internal analysis, generally supported the prediction With one qualification, the results were held to be consistent with Festinger and Carlsmith's version of dissonance arousal and inconsistent with the self-esteem analysis 相似文献