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211.
Henry F. Kaiser 《Psychometrika》1962,27(2):155-162
A least-squares solution for scaling the variables of a Guttman simplex is developed. The procedure yields a ratio scale, two varieties of interval scale, and orders the variables. A measure of the goodness of fit of the scale to the data is suggested. An example of the application of the method is given. The problem of non-positive correlations is discussed.I am indebted to Professor Lloyd Humphreys for suggesting this problem. Mr. Joseph Levin independently has arrived at the results of the first section of the paper. The final version of this paper was prepared while the author was a U. S. Public Health Service Fellow at the Center for Advanced Study in the Behavioral Sciences. 相似文献
212.
Henry F. Kaiser 《Psychometrika》1960,25(2):153-158
The varimax solution for Thurstone's classic Primary Mental Abilities study is presented. Comparisons between the factors of Thurstone's original subjectively rotated factor pattern, Zimmerman's subjectively revised solution, Wrigley, Saunders, and Neuhaus' quartimax results, and the present varimax factor matrix are made by finding correlations between factors defined by these four solutions. It is pointed out that any possible ultimate merit of the varimax solution should be based on its psychological meaningfulness and on the rationale of the varimax criterion—not on its relationship to the other studies.The computations for this paper were done on Illiac, an electronic computer of the Digital Computer Laboratory of the University of Illinois. Mr. S. M. Hunka assisted in these computations. 相似文献
213.
214.
Rachel Kaiser 《The Journal of medical humanities》2002,23(2):95-105
Cultural forces such as film create and reinforce rigidly-defined images of a doctor's identity for both the public and for medical students. The authoritarian and hierarchical institution of medical school also encourages students to adopt rigidly-defined professional identities. This restrictive identity helps to perpetuate the power of the patriarchy, limits uniqueness, squelches inquisitiveness, and damages one's self-confidence. This paper explores the construction of a physician's identity using cultural theorists' psychoanalytic analyses of gender and race as a framework of analysis. Cultural theorists' politically-motivated work provides an excellent point of departure for destabilizing parts of the authoritarian medical hierarchy that can damage a student's professional development. Drawing on such discourse, this paper examines the processes by which a doctor's identity becomes rigidly defined and fixed by daily training. It finally proposes a way for a medical student to extrapolate himself from the current definitions of this identity and create a broader, more malleable concept of professional identity by defining himself from outside of, rather than through, difference. 相似文献
215.
Hannah Scheuthle Vicente Carabias‐Hütter Florian G. Kaiser 《Journal of applied social psychology》2005,35(10):2076-2093
Contextual conditions affect behavior in 2 ways: (a) They confront people with opportunities and obstacles that affect their motivation to take action; or (b) they instantaneously shape performance, regardless of a person's motivation and even without subjective acknowledgment of the conditions. Traditionally in psychology, the immediate behavioral consequences of a context are disregarded. Based on our theory of goal‐directed behavior, we are able to disentangle the instant and the motivational behavioral consequences of contexts. In an example study, 40% of the variation in performance among 660 Swiss and Spanish pupils was explained by motivational differences. Instantaneous constraints and facilitations imposed on people's acts, in turn, revealed a set of Switzerland‐ and Spain‐specific limitations and affordances (hit rate = 97.5%). 相似文献
216.
In two experiments, we used response signals (RSs) to control processing time and trace out speed--accuracy trade-off(SAT) functions in a difficult perceptual discrimination task. Each experiment compared performance in blocks of trials with constant and, hence, temporally predictable RS lags against performance in blocks with variable, unpredictable RS lags. In both experiments, essentially equivalent SAT functions were observed with constant and variable RS lags. We conclude that there is little effect of advance preparation for a given processing time, suggesting that the discrimination mechanisms underlying SAT functions are driven solely by bottom-up information processing in perceptual discrimination tasks. 相似文献
217.
Adults assess precisely the center of mass (CM) of single-bodied objects and choose grasping points that span an axis through or close to the center of mass when lifting them. The present study examined how children and adults assess the CM when lifting two-bodied objects (barbells) and how this ability develops. Four- to five-year olds, 6- to 7-year olds, 9- to 11-year olds and adults were required to grasp and lift symmetrically and asymmetrically proportioned miniature barbells and their grasping points were recorded. While the 4- to 5-year olds grasped near the center of the barbell, accuracy of assessing the correct CM improved linearly with age. Although adults grasped close to the CM, their CM determination follows only an approximation of the physical law. 相似文献
218.
ABSTRACT— In nonhuman mammals, the social environment in which pregnant females live is critical for their offsprings' brain development, endocrine state, and social and sexual behavior later in life. Social instability during pregnancy generally brings about a behavioral and neuroendocrine masculinization in daughters and a less pronounced expression of male-typical traits in sons. We favor the hypothesis that such behavioral effects of prenatal social stress are not necessarily "pathological" (nonadaptive) consequences of adverse social conditions. Rather, pregnant mothers could be adjusting their offspring to their environment in an adaptive way. 相似文献
219.
Boris Kotchoubey Jochen Kaiser Vladimir Bostanov Werner Lutzenberger Niels Birbaumer 《Cognitive, affective & behavioral neuroscience》2009,9(2):153-167
A passive oddball experiment was used in which stimuli were emotional exclamations differing in their affective tone. In both
electroencephalography (EEG) and magnetoencephalography (MEG), deviants elicited an N300 component, sometimes accompanied
by a slow wave. Both components had a symmetrical distribution, but the former was more posterior than the latter. The same
responses to prosodic stimuli were significant in 6 of 27 patients with severe disorders of consciousness (persistent vegetative
state and minimally conscious state) and in all 3 of the examined locked-in patients, indicating that the procedure can be
applied for testing neurological patients. The occurrence of significant responses depended on the presence or absence of
a lesion to the right temporal lobe. Obviously, the N300 depends on the activity of the right temporal cortex but does not
originate there. We suggest that the component is related not to the recognition of affective prosody as such, but to the
following detection of affective mismatch due to violations of emotional context of stimulation. 相似文献
220.
Perceived discrimination as worldview threat or worldview confirmation: implications for self-esteem 总被引:1,自引:0,他引:1
Major B Kaiser CR O'Brien LT McCoy SK 《Journal of personality and social psychology》2007,92(6):1068-1086
In 3 studies, the authors tested the hypothesis that discrimination targets' worldview moderates the impact of perceived discrimination on self-esteem among devalued groups. In Study 1, perceiving discrimination against the ingroup was negatively associated with self-esteem among Latino Americans who endorsed a meritocracy worldview (e.g., believed that individuals of any group can get ahead in America and that success stems from hard work) but was positively associated with self-esteem among those who rejected this worldview. Study 2 showed that exposure to discrimination against their ingroup (vs. a non-self-relevant group) led to lower self-esteem, greater feelings of personal vulnerability, and ingroup blame among Latino Americans who endorsed a meritocracy worldview but to higher self-esteem and decreased ingroup blame among Latino Americans who rejected it. Study 3 showed that compared with women informed that prejudice against their ingroup is pervasive, women informed that prejudice against their ingroup is rare had higher self-esteem if they endorsed a meritocracy worldview but lower self-esteem if they rejected this worldview. Findings support the idea that perceiving discrimination against one's ingroup threatens the worldview of individuals who believe that status in society is earned but confirms the worldview of individuals who do not. 相似文献