首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 0 毫秒
1.
Hemisphere dynamics in lexical access: automatic and controlled priming   总被引:10,自引:9,他引:1  
Hemisphere differences in lexical processing may be due to asymmetry in the organization of lexical information, in procedures used to access the lexicon, or both. Six lateralized lexical decision experiments employed various types of priming to distinguish among these possibilities. In three controlled (high probability) priming experiments, prime words could be used as lexical access clues. Larger priming was obtained for orthographically similar stimuli (BEAK-BEAR) when presented to the left visual field (LVF). Controlled priming based on phonological relatedness (JUICE-MOOSE) was equally effective in either visual field (VF). Semantic similarity (INCH-YARD) produced larger priming for right visual field (RVF) stimuli. These results suggest that the hemispheres may utilize different information to achieve lexical access. Spread of activation through the lexicon was measured in complementary automatic (low probability) priming experiments. Priming was restricted to LVF stimuli for orthographically similar words, while priming for phonologically related stimuli was only obtained in the RVF. Automatic semantic priming was present bilaterally, but was larger in the LVF. These results imply hemisphere differences in lexical organization, with orthographic and semantic relationships available to the right hemisphere, and phonological and semantic relations available to the left hemisphere. Support was obtained for hemisphere asymmetries in both lexical organization and directed lexical processing.  相似文献   

2.
3.
A reanalysis of previously published data suggests that the Defense Mechanism Inventory can be utilized to yield a composite measure of reaction to frustration by contrasting linearly the defenses of Turning-against-object and Projection against those of Principalization and Reversal-of-affect. Factor-analytic and correlational data support the exclusion of Turning-against-self from the composite measure. Studies of content validity are presented for the combination of the four defenses into one dimension. Patterns of interitem reliability are charted for the five defenses and the composite measure for both men and women. Internal consistency data are also presented for the standard scoring as well as for a modified method to explore the feasibility of simplifying and shortening the test-taking procedure.  相似文献   

4.
False consensus refers to an egocentric bias that occurs when people estimate consensus for their own behaviors. Specifically, the false consensus hypothesis holds that people who engage in a given behavior will estimate that behavior to be more common than it is estimated to be by people who engage in alternative behaviors. A meta-analysis was conducted upon 115 tests of this hypothesis. The combined effects of the tests of the false consensus hypothesis were highly statistically significant and of moderate magnitude. Further, the 115 tests of false consensus appear to be relatively heterogeneous in terms of significance levels and effect sizes. Correlational analyses and focused comparisons indicate that the false consensus effect does not appear to be influenced by the generality of the reference population, nor by the difference between alternative choices in actual consensus. However, the significance and magnitude of the false consensus effect was significantly predicted by the number of behavioral choices/estimates subjects had to make, and the sequence of measurement of choices and estimates. These patterns of results are interpreted as being inconsistent with the self-presentational, motivational explanation for the false consensus effect.  相似文献   

5.
An implicit assumption in the literature on functional hemispheric asymmetry is that the right hemisphere plays a special role in mental imagery. Using a definition of mental imagery as quasi-perceptual experience, we draw distinctions among visual imagery, visual recognition memory, and visuospatial abilities. We then review the research literature to evaluate the hypothesis that mental imagery is a specialized function of the right cerebral hemisphere, and find that it receives little unambiguous support. Case reports of loss of imagery are no more frequent with right than with left unilateral brain damage. Systematic studies of brain-injured patients provide some support for the hypothesis, but are also consistent with the alternative hypothesis of bilateral representation of imagery. Commissurotomized patients report dreaming and being able to form visual images. Behavioral and psychophysiological studies of non-brain-injured patients either fail to provide evidence in favor of the hypothesis or can be interpreted as compatible with the alternate hypothesis of bilateral hemispheric involvement in imagery. We conclude that there is, presently, insufficient empirical basis for considering imagery a right hemispheric function. We then discuss implications of this conclusion for future research.  相似文献   

6.
Bilateral language: Is the left hemisphere still dominant?   总被引:1,自引:0,他引:1  
A 13-year-old left-handed boy with a left fronto-parietal vascular malformation evidenced bilateral symmetrical language representation at intracarotid amytal testing. Surgical resection of the parietal motor and frontal premotor area (sparing classical perisylvian language regions) for seizure control resulted in an acute aphasia. Language deficits were still apparent 3 months and to a lesser degree 1 year after surgery. This suggests that when language is bilateral and symmetrical, the left hemisphere may still be dominant or both hemispheres may be necessary to sustain full language competence. Explanations for atypical language localization within the left hemisphere are also discussed.  相似文献   

7.
Four studies are reported. In the first, it was shown that littering rates vary substantially across areas of a large urban region and that the rate for a particular area is correlated with the amount of litter already present. It was also found that males litter more than females and young people more than old. In the second study, a laboratory experiment, a causal relationship between the amount of litter in an area and the likelihood it will be littered was demonstrated. A third study replicated this latter finding, but did not find a relationship between the amount of stress experienced by a subject and the likelihood that he or she would litter. In the fourth study, a field experiment, subjects who were approached and asked to sign a petition about clean streets littered less than control subjects.  相似文献   

8.
In behavior change literature, little attention has been paid to the systematic study of variables affecting transfer of training. The present study employed a skill-training method known as Structured Learning Therapy (SLT) for the dual purpose of testing the effectiveness of this method and to identify variables that will promote transfer of training. Forty-three disruptive male adolescents were assigned to three experimental and two control conditions. One experimental group received SLT plus an additional transfer-enhancing procedure referred to as Transfer Programming (TP) which consisted of in vivo practice of treatment gains and peer reinforcement. Another group received only SLT, and a third group received only TP. One control group received only brief instructions pertaining to the nature of the skill, while the second group served as an attention control. Consistent with predictions, the results were that the two groups receiving the SLT performed significantly better than the three groups not receiving SLT on all dependent measures at posttest. These differences generally maintained at follow-up. Contrary to expectations, the implementation of TP did not prove to promote transfer of training beyond that found with SLT alone.  相似文献   

9.
Reviewer reliability is examined for the first 2 years of operation of Developmental Review. Using the statistic, Finn's r, summary recommendations on publishability are shown to be higher in reliability than previously reported for other journals. Separate rating scales are shown to be less reliable than summary recommendations. Finn's r is compared with the intraclass correlation coefficient and shown to be a better method for examining reviewer agreement across different journals. Potential causes of high reviewer agreement for Developmental Review are discussed, and the importance of the distinction between reliability and validity of reviews is noted.  相似文献   

10.
The concept of social competence presents problems for conceptualization and assessment. At times researchers have tried to circumvent these problems by defining competence in terms of specific capacities or skills, with the consequence that the integrative potential of the concept is lost. On the other hand, more molar definitions (e.g., “effectiveness”), while being true to the integrative nature of the construct, provide little guidance for assessment. In this paper a developmental perspective on competence is presented which is congruent with a molar definition of competence while still guiding assessment efforts. In addition to this developmental viewpoint, certain practical guidelines are presented for assessment of competence across ages. These include the use of broadband assessments, which are tied to real-life adaptational problems, call for the coordination of affect, cognition, and behavior, and tax the integrative capacities of the child. Initial validation of the developmental competence construct and this approach to assessment is presented.  相似文献   

11.
Egeland and Weinberg's contention that form F of the Matching Familiar Figures Test is inappropriate for kindergarten children was examined. White, middle-class, suburban kindergarten children were given form F of the Matching Familiar Figures Test, as well as a series of tests varying in degree of response uncertainty. It was hypothesized that tasks identified as high in response uncertainty would be the best predictors of norm-referenced composite reflection-impulsivity scores. Stepwise multiple regression analysis supported this hypothesis. The results were interpreted as supporting the construct validity of the Matching Familiar Figures Test as an index of reflection-impulsivity among kindergarten children.  相似文献   

12.
The assignment of subjects to conditions on the basis of social desirability scores could not have been done in the manner described by Cherry, Byrne, and Mitchell (Journal of Research in Personality, 1976, 10, 69–75). Even if subject assignment procedures were not challenged the data do not support the authors' conclusions. Additional statistical analyses were carried out to test the hypotheses of the original study. It is concluded that either the demand cue manipulation was not successful or else paper-and-pencil and bogus pipeline measurement procedures are equally reliable measurement devices for the attitude similarity effect.  相似文献   

13.
Social facilitation refers to the enhancement of an organism's dominant responses by the simple physical presence of species-mates, independent of any informational or interactional influences the others may exert. This phenomenon represents the consequences of the most elementary transition from a nonsocial to a social environment, and is one of the first research areas in experimental social psychology. The present analysis examines the status of three different explanations for socially facilitated behavior. Substantial weaknesses exist in the propositions that the presence of others elicits a reflexive alertness or preparedness response (Mere Presence) and that the presence of others increases drive through classically conditioned anticipations of positive and negative outcomes (Learned Drive). A third proposition argues for increased drive due to response conflict involving incompatible tendencies to attend to others and to ongoing task requirements (Distraction/Conflict). The basic assumptions of the Distraction/Conflict hypothesis are found to have considerable empirical support, and a wide variety of apparently anamolous results are integrated into the attentional conflict framework. Finally, a synthesis of the three approaches is proposed wherein slightly modified versions of the Mere Presence and Learned Drive theories serve to specify two common antecedents for the arousal of attentional conflict (the Attentional Processes model). Connections between the Attentional Processes model and past and future research are explored.  相似文献   

14.
The patterns of perceptual asymmetry elicited by dichotic speech and complex pitch stimuli were evaluated in a group of 28 normal, right-handed subjects. As in previous studies, between 70 and 75% of the subjects showed a right-ear advantage for speech and left-ear advantage for pitch. However, less than half of the subjects (46%) showed the expected pattern on both tests. It is argued that the assumption of symmetrical, contralateral auditory pathway superiority during dichotic stimulation is only appropriate in roughly half of the dextral population. In the remaining half, significant subcortical asymmetries and/or a lack of contralateral advantage appear to be present. The assessment of complementary cortical functions should provide a way to reduce the confounding of cortical and subcortical contributions to auditory perceptual asymmetries, and thus provide a more accurate behavioral index of brain organization.  相似文献   

15.
16.
Three patients with severe aphasia and right hemiplegia are described who could write to dictation with the right arm using a limb prosthesis though agraphic with the "intact" left hand. The phenomenon of "hemiplegic writing" is explained as an access to submerged or preprocessing levels in language and action structure, through the use of older proximal motor systems. This interpretation has implications for our understanding of language and brain function, as well as for approaches to the treatment of patients with severe language disorders.  相似文献   

17.
A considerable body of research has accumulated concerning the strength of the relationship between job and life satisfaction. However, very few studies have examined the possible moderating effects of other variables. The present study, using a sample of 911 heads of households, examined the moderating effects of seven variables related to occupation, age, and urbanization. As hypothesized, education and income positively, and strongly, moderated the job satisfaction-life satisfaction relationship. Self-employment (vs non-self-employment) also had a significant impact; occupation, though, had only a modest effect. Age and job longevity exhibited strong, curvilinear effects. Urbanization did not attenuate the relationship. In view of national work force trends toward increased education, professionalization, income, and age, the relationship between job and life satisfaction will likely become stronger and more relevant over time.  相似文献   

18.
19.
The literature on language mixing in polyglot aphasics is reviewed and a case report of a patient with spontaneous translation is presented. A microgenetic model of language processing provides an interpretive framework for language mixing and spontaneous translation as symptoms of polyglot aphasia. It is suggested that language mixing reflects a deficit at the linguistic level while spontaneous translation reflects a deficit at the prelinguistic level of language processing. A hypothesis about the organization of multiple languages in a single speaker is proposed.  相似文献   

20.
Previous research has demonstrated that people are more likely to attribute a stranger's behavior to external causes if that behavior is common in a given population than if it is relatively unique (the consensus rule). It was proposed in the present paper that another and perhaps simpler rule is available for causal attributions for an acquaintance's behavior, such that more external attributions are made as the behavior becomes increasingly inconsistent with extant impressions of the target (the goodness-of-fit rule). It was found that the goodness-of-fitrule, but not the consensus rule, was used in the attribution of causality for acquaintances when the behavior could be made to fit with extant impressions. When the behavior was completely inconsistent with extant impressions, both consensus and goodness-of-fit rules were used, such that the most external attributions were made in the poor fit/high consensus condition.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号