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241.
Published psychological research attempting to support the existence of small and medium effect sizes may not have enough participants to do so accurately, and thus, repeated trials or the use of multiple items may be used in an attempt to obtain significance. Through a series of Monte-Carlo simulations, this article describes the results of multiple trials or items on effect size estimates when the averages and aggregates of a dependent measure are analyzed. The simulations revealed a large increase in observed effect size estimates when the numbers of trials or items in an experiment were increased. Overestimation effects are mitigated by correlations between trials or items, but remain substantial in some cases. Some concepts, such as a P300 wave or a test score, are best defined as a composite of measures. Troubles may arise in more exploratory research where the interrelations among trials or items may not be well described. 相似文献
242.
Andrew G. Livingstone Russell Spears Martin Bruder 《Journal of experimental social psychology》2011,47(4):786-793
Evidence attests to the efforts made by minority groups to defend and promote ‘distinctive’ attributes that potentially define the ingroup. However, these attributes are often only available to a prototypical minority within the minority category. In two studies we tested the hypothesis that, under certain conditions, large projected increases in the numerical strength of a ‘distinctive’ attribute (emotional intelligence in Study 1; ingroup language in Study 2) within a minority category can paradoxically evoke less-than-positive reactions from those who already have the attribute. Findings confirmed that while a large projected increase in the numerical strength of a ‘distinctive’ attribute was viewed positively when the comparative context focused on the inter-category relation with a majority outgroup, this increase was viewed less positively, and as undermining their own identity, in a narrower intra-category context. Implications for identity management strategies in minority groups are discussed. 相似文献
243.
Occurrence of the home disadvantage in professional ice hockey was examined by analyzing shootout data from 2005 through 2008. Results indicated that teams involved in shootouts playing at their home arenas did not lose significantly more games at home than on the road. Results did not support the hypotheses that emphasize the roles of physical contact and diffusion of responsibility in accounting for past failures to find the home disadvantage in professional ice hockey. 相似文献
244.
Personality disorders are associated with fundamental disturbances of self and interpersonal relations, problems that vary in severity within and across disorders. This review surveyed clinician-rated measures of personality psychopathology that focus on self-other dimensions to explore the feasibility and utility of constructing a scale of severity of impairment in personality functioning for DSM-5. Robust elements of the instruments were considered in creating a continuum of personality functioning based on aspects of identity, self-direction, empathy, and intimacy. Building on preliminary findings (Morey et al., 2011 /this issue), the proposed Levels of Personality Functioning will be subjected to extensive empirical testing in the DSM-5 field trials and elsewhere. The resulting version of this severity measure is expected to have clinical utility in identifying personality psychopathology, planning treatment, building the therapeutic alliance, and studying treatment course and outcome. 相似文献
245.
246.
247.
Andrew C. Khoury 《The Journal of value inquiry》2011,45(2):135-146
248.
Andrew William Howat 《Philosophical Studies》2011,156(2):155-172
This paper explores a distinction between two types of response-dependence (RD) account (shallow vs. deep). This distinction
is inherent in much of the existing literature, however it is neither widely nor well understood, and has never been drawn
explicitly. The distinction is often taken to be a metaphysical, or ‘realism-relevant’ one—i.e. deep RD accounts entail qualified
realism (or perhaps anti-realism), while shallow RD accounts are metaphysically neutral. I argue that the distinction is not
reliably realism-relevant. I formulate a weaker version of the distinction that may help prevent some common and understandable
confusion about RD biconditionals and their relationship to realism. The weaker distinction rests on the different roles assigned
to RD biconditionals by the two types of account. 相似文献
249.
Three experiments were conducted to examine the effect of phonological similarity in simple and complex memory span tasks.
In Experiment 1, participants performed either a simple or a complex span task, and the memoranda within lists were either phonologically
similar or distinct. Phonologically similar lists consisted of words that rhymed.The simple span task was word span. There
were two complex span tasks; one was the original reading span task, and the other was a variant of reading span in which
all the sentences within a list were contextually related. The classic phonological similarity decrement was observed in word
span. In contrast, phonological similarity facilitation was observed in both versions of reading span. This facilitation effect
was further investigated in Experiment 2 using two new versions of reading span. In Experiment 2, the sentences in reading span were either short or long, and the memoranda were presented separately from, and were unrelated
to, the sentences. Again, words within phonologically similar lists rhymed, and again, facilitation was observed. In Experiment
3, phonological similarity was operationalized in terms of feature overlap, rather than rhyme. The classic phonological similarity
decrement was still observed in word span, but facilitation was not observed in complex span. The results suggest that phonological
similarity, when operationalized using words that rhyme, serves as a list retrieval cue and that complex span tasks are more
dependent on cue-driven memory retrieval mechanisms than are simple span tasks. 相似文献
250.
Caroline H.S. Barwood Bruce E. Murdoch Brooke-Mai Whelan David Lloyd Stephan Riek John D. OSullivan Alan Coulthard Andrew Wong 《Brain and language》2011,116(3):125-135
Low frequency Repetitive Transcranial Magnetic Stimulation (rTMS) has previously been applied to language homologues in non-fluent populations of persons with aphasia yielding significant improvements in behavioral language function up to 43 months post stimulation. The present study aimed to investigate the electrophysiological correlates associated with the application of rTMS through measurement of the semantic based N400 Event-related brain potentials (ERP) component. Low frequency (1 Hz) rTMS was applied to the anterior portion of the homologue to Broca’s area (pars triangularis), for 20 min per day for 10 days, using a stereotactic neuronavigational system. Twelve non-fluent persons with aphasia, 2-6 years post stroke were stimulated. Six participants were randomly assigned to receive real stimulation and six participants were randomly assigned to receive a blind sham control condition. ERP measures were recorded at baseline, 1 week and 2 months subsequent to stimulation. The findings demonstrate treatment related changes observed in the stimulation group when compared to the placebo control group at 2 months post stimulation indicating neuromodulation of N400 as a result of rTMS. No treatment related changes were identified in the stimulation group, when compared to the sham group from baseline to 1 week post stimulation. The electrophysiological results represent the capacity of rTMS to modulate neural language networks and measures of lexical-semantic function in participants with non-fluent aphasia and suggest that time may be an important factor in brain reorganization subsequent to rTMS. 相似文献