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21.
Comparison time for pairs of vertical-line stimuli, sufficiently different that they can be errorlessly discriminated with respect to visual extent, was examined as a function of arithmetic relations (physical ratio and difference) on members of the pair. Arithmetic relations are coded very precisely by judgment time: Responses slow as stimulus ratios approach one with difference fixed, and as stimulus differences approach zero with ratio fixed. Most models which assume a simple (Difference or Ratio) resolution rule operating on independent sensations require judgment time to depend on either ratios or on differences but not on both. Further tests showed both an index based on median judgment times and a confusion index based on pairs of observed judgment times, satisfied the requirements for a Positive Difference Structure. One representation of these data, which remains acceptable through all analyses, is a Difference resolution rule operating on sensations determined by a power psychophysical function with β < 1. Specifically, L(x, y) = F{ψ(x) ? ψ(y)} + R, where L(x, y) is the judgment time with the stimulus pair x and y, ψ(x) = Axβ + C, R is a positive constant, and F is a continuous monotone decreasing function. 相似文献
22.
This study examines the effects of maternal teaching style on the developing problem-solving abilities of deaf and hearing pre-school children. Mothers and children from three matched groups, hearing mother-deaf child, hearing mother-hearing child, and deaf mother-deaf child, were videotaped while the mother instructed the child on a block construction task and again when the child attempted the task independently. Dependent measures were maternal instructional style and child performance. The mothers in the deaf mother-deaf child and hearing mother-hearing child dyads used appropriate scaffolding behaviour and their children were more likely to exhibit adept and independent problem-solving abilities than the deaf children of hearing mothers. The findings of this study support Vygotsky's notion of the ‘zone of proximal development’ and the concept of adult scaffolding of children's learning. 相似文献
23.
Birchwood M Trower P Brunet K Gilbert P Iqbal Z Jackson C 《Behaviour research and therapy》2007,45(5):1025-1037
Social anxiety disorder (SaD) or social phobia is a co-morbid affective disorder in schizophrenia, present in up to one in three individuals. We employ 'social rank' theory to predict that one pathway to social anxiety in schizophrenia is triggered by the anticipation of a catastrophic loss of social status that the stigma of schizophrenia can entail. A group of 79 people with a first episode of psychosis were assessed for social anxiety: hypotheses were tested comparing 23 socially anxious and 56 non-anxious patients on measures of cognitive appraisals of shame/stigma of psychosis and perceived social status, controlling for depression, psychotic symptoms and general psychopathology. Participants with social anxiety experienced greater shame attached to their diagnosis and felt that the diagnosis placed them apart from others, i.e., socially marginalised them and incurred low social status. We propose a stigma model of social anxiety that makes testable predictions about how the shame beliefs may contaminate social interaction and thereby exacerbate and maintain social phobia. 相似文献
24.
Randall K. Jamieson Uliana Nevzorova Graham Lee D. J. K. Mewhort 《Psychological research》2016,80(2):195-211
In artificial grammar learning experiments, participants study strings of letters constructed using a grammar and then sort novel grammatical test exemplars from novel ungrammatical ones. The ability to distinguish grammatical from ungrammatical strings is often taken as evidence that the participants have induced the rules of the grammar. We show that judgements of grammaticality are predicted by the local redundancy of the test strings, not by grammaticality itself. The prediction holds in a transfer test in which test strings involve different letters than the training strings. Local redundancy is usually confounded with grammaticality in stimuli widely used in the literature. The confounding explains why the ability to distinguish grammatical from ungrammatical strings has popularized the idea that participants have induced the rules of the grammar, when they have not. We discuss the judgement of grammaticality task in terms of attribute substitution and pattern goodness. When asked to judge grammaticality (an inaccessible attribute), participants answer an easier question about pattern goodness (an accessible attribute). 相似文献
25.
26.
Masako Tanaka Ellen Jamieson Katholiki Georgiades Eric K. Duku Michael H. Boyle Harriet L. MacMillan 《Journal of aggression, maltreatment & trauma》2013,22(8):821-844
We examined the associations between childhood physical and sexual abuse and labor force outcomes in young adults and the possible mediating effects of educational attainment, current mental health, and physical health. Data from the Ontario Child Health Study (N = 1,893), a province-wide longitudinal study were analyzed. Controlling for childhood and demographic variables, severe childhood physical abuse was significantly associated with reduced income with small mediating effects. There was a sex difference in the association between child abuse and employment. Severe childhood physical abuse was significantly associated with lower likelihood of employment only among males; mediators partially reduced this association. Further research is needed to explore the mechanisms linking exposure to child abuse and economic vulnerability in young adults. 相似文献
27.
Abstract Females are more likely than males to report anxiety about mathematics. Hunsley and Flessati (1988) examined two explanations for this difference: the sex-role socialization hypothesis, which states that gender differences occur as a result of differences in socialization, and the math experiences hypothesis, which states that math anxiety is due to previous experiences with mathematics, regardless of gender. They found support only for the math experiences hypothesis, and suggested that the gender difference in math anxiety may be an artifact of response bias. The present study replicated the Hunsley and Flessati study and included an evaluation of response bias. One hundred and fifty Introductory Psychology students completed a series of questionnaires examining mathematics anxiety, attitudes and mathematical background. The findings of Hunsley and Flessati were replicated, however no evidence was found for a gender-linked response bias. An alternative explanation for the gender difference in math anxiety is proposed based on the finding that females are more self-critical. 相似文献
28.
This research examined the benefits of interpreting physiological arousal as a challenge response on practice and actual Graduate Record Examination (GRE) scores. Participants who were preparing to take the GRE reported to the laboratory for a practice GRE study. Participants assigned to a reappraisal condition were told arousal improves performance, whereas control participants were not given this information. We collected saliva samples at baseline and after the appraisal manipulation, which were then assayed for salivary alpha amylase (sAA), a measure of sympathetic nervous system activation. Reappraisal participants exhibited a significant increase in sAA and outperformed controls on the GRE-math section. One to three months later, participants returned to the lab and provided their score reports from their actual GRE. Again, reappraisal participants scored higher than controls on the GRE-math section. These findings illuminate the powerful influence appraisal has on physiology and performance both in and out of the laboratory. 相似文献
29.
Dale Jamieson 《Science and engineering ethics》2010,16(3):431-445
In this paper I make the following claims. In order to see anthropogenic climate change as clearly involving moral wrongs
and global injustices, we will have to revise some central concepts in these domains. Moreover, climate change threatens another
value (“respect for nature”) that cannot easily be taken up by concerns of global justice or moral responsibility. 相似文献
30.