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201.
The assumption that humans are able to perceive and process-angular kinematics is critical to many structure-from-motion and optical flow models. The current studies investigate this sensitivity, and examine several factors likely to influence angular velocity perception. In particular, three factors are considered: (1) the extent to which perceived angular velocity is determined by edge transitions of surface elements, (2) the extent to which angular velocity estimates are influenced by instantaneous linear velocities of surface elements, and (3) whether element-velocity effects are related to three-dimensional (3-D) tangential velocities or to two-dimensional (2-D) image velocities. Edge-transition rate biased angular velocity estimates only when edges were highly salient. Element velocities influenced perceived angular velocity; this bias was related to 2-D image velocity rather than 3-D tangential velocity. Despite these biases, however, judgments were most strongly determined by the true angular velocity. Sensitivity to this higher order motion parameter was surprisingly good, for rotations both in depth (y-axis) and parallel to the line of sight (z-axis). 相似文献
202.
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
203.
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
204.
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
205.
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
206.
207.
Marie I. Kaiser 《Metaphilosophy》2019,50(1-2):36-62
This paper analyzes what it means for philosophy of science to be normative. It argues that normativity is a multifaceted phenomenon rather than a general feature that a philosophical theory either has or lacks. It analyzes the normativity of philosophy of science by articulating three ways in which a philosophical theory can be normative. Methodological normativity arises from normative assumptions that philosophers make when they select, interpret, evaluate, and mutually adjust relevant empirical information, on which they base their philosophical theories. Object normativity emerges from the fact that the object of philosophical theorizing can itself be normative, such as when philosophers discuss epistemic norms in science. Metanormativity arises from the kind of claims that a philosophical theory contains, such as normative claims about science as it should be. Distinguishing these three kinds of normativity gives rise to a nuanced and illuminating view of how philosophy of science can be normative. 相似文献
208.
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
209.
A Critical Review of Self-perceptions and the Positive Illusory Bias in Children with ADHD 总被引:3,自引:0,他引:3
Owens JS Goldfine ME Evangelista NM Hoza B Kaiser NM 《Clinical child and family psychology review》2007,10(4):335-351
Despite significant functional problems in multiple domains, children with Attention-Deficit/Hyperactivity Disorder (ADHD) unexpectedly provide extremely positive reports of their own competence in comparison to other criteria reflecting actual competence. This counterintuitive phenomenon is known as the positive illusory bias (PIB). This article provides a comprehensive and critical review of the literature examining the self-perceptions of children with ADHD and the PIB. Specifically, we analyze methodological and statistical challenges associated with the investigation of the phenomenon, the theoretical basis for the PIB, and the effects of sample heterogeneity on self-perception patterns. We conclude by discussing the implications of this work and providing recommendations for advancing research in this area. 相似文献
210.