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141.
Theories of semantic memory differ in the extent to which relationships among concepts are captured via associative or via
semantic relatedness. We examined the contributions of these two factors, using a visual world paradigm in which participants selected the named object from a four-picture display. We controlled for semantic relatedness while
manipulating associative strength by using the visual world paradigm’s analogue to presenting asymmetrically associated pairs
in either their forward or backward associative direction (e.g., ham—eggs vs. eggs—ham). Semantically related objects were preferentially fixated regardless of the direction of presentation (and the effect size
was unchanged by presentation direction). However, when pairs were associated but not semantically related (e.g., iceberg—lettuce), associated objects were not preferentially fixated in either direction. These findings lend support to theories in which
semantic memory is organized according to semantic relatedness (e.g., distributed models) and suggest that association by
itself has little effect on this organization. 相似文献
142.
Children produce their first gestures before their first words, and their first gesture+word sentences before their first word+word sentences. These gestural accomplishments have been found not only to predate linguistic milestones, but also to predict them. Findings of this sort suggest that gesture itself might be playing a role in the language‐learning process. But what role does it play? Children's gestures could elicit from their mothers the kinds of words and sentences that the children need to hear in order to take their next linguistic step. We examined maternal responses to the gestures and speech that 10 children produced during the one‐word period. We found that all 10 mothers ‘translated’ their children's gestures into words, providing timely models for how one‐ and two‐word ideas can be expressed in English. Gesture thus offers a mechanism by which children can point out their thoughts to mothers, who then calibrate their speech to those thoughts, and potentially facilitate language‐learning. 相似文献
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144.
Neuropsychology,genetic liability,and psychotic symptoms in those at high risk of schizophrenia 总被引:4,自引:0,他引:4
Byrne M Clafferty BA Cosway R Grant E Hodges A Whalley HC Lawrie SM Owens DG Johnstone EC 《Journal of abnormal psychology》2003,112(1):38-48
Neuropsychological assessments were compared among individuals at enhanced genetic risk of schizophrenia (n = 157) and controls (n = 34). The relationship between cognitive impairments and the presence of psychotic symptoms and measures of genetic risk was explored in the high-risk subjects. Neuropsychological differences were identified in many areas of function and were not accounted for by the presence of psychotic symptoms. Genetic liability was not associated with neuropsychological performance or with psychotic symptoms, but exploratory analysis showed some tests were associated with both liability measures. These results suggest that what is inherited is not the disorder itself but a state of vulnerability manifested by neuropsychological impairment, occurring in many more individuals than are predicted to develop the disorder. 相似文献
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146.
Turner RA Altemus M Yip DN Kupferman E Fletcher D Bostrom A Lyons DM Amico JA 《Stress (Amsterdam, Netherlands)》2002,5(4):269-276
Research on both non-human mammals and humans has raised interest in the role that oxytocin may play in human attachment and attachment-related emotions. This study examined changes in plasma oxytocin, prolactin, and ACTH concentrations in response to laboratory-induced positive and negative emotions related to close, interpersonal relationships. Participants were 32 female volunteers recruited from university communities. During positive emotion induction, oxytocin decreased over time (F(1,3) = 4.41, p < 0.007), prolactin increased (F(1,3) = 4.80, p < 0.004) and ACTH remained constant. During negative emotion induction, prolactin levels increased (F(1,3) = 2.81, p < 0.05), ACTH decreased only after the induction terminated (F(1,3) = 4.02, p < 0.01) and oxytocin remained constant. While oxytocin decreased during positive emotion, this finding contrasted previous research that showed decreases in response to negative emotion. In conclusion, plasma oxytocin levels were not reliably altered by positive or negative emotion induction. While prolactin and ACTH were expected to decrease over time due to diurnal variation, they instead either increased or remained level during emotion induction, or decreased only after the induction. Overall, the degree of change in circulating hormones in response to happy and sad emotions was very small and possibly not functionally significant. 相似文献
147.
Effects of information specifying the position of an object in a 3-D scene were investigated in two experiments with twelve observers. To separate the effects of the change in scene position from the changes in the projection that occur with increased distance from the observer, the same projections were produced by simulating (a) a constant object at different scene positions and (b) different objects at the same scene position. The simulated scene consisted of a ground plane, a ceiling plane, and a cylinder on a pole attached to both planes. Motion-parallax scenes were studied in one experiment; texture-gradient scenes were studied in the other. Observers adjusted a line to match the perceived internal depth of the cylinder. Judged depth for objects matched in simulated size decreased as simulated distance from the observer increased. Judged depth decreased at a faster rate for the same projections shown at a constant scene position. Adding object-centered depth information (object rotation) increased judged depth for the motion-parallax displays. These results demonstrate that the judged internal depth of an object is reduced by the change in projection that occurs with increased distance, but this effect is diminished if information for change in scene position accompanies the change in projection. 相似文献
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149.
Eve Maram 《Psychological Perspectives》2016,59(1):23-29
In this article the author charts the beginning of a journey, a weaving together of personal insights and experiences related to schizophrenia, mostly unwanted, including observations from decades of study as a psychologist and Jungian-oriented therapist/student and dream work from her own analysis. The shock of her mother's death, in conjunction with her adult son's plummet into the world she most dreaded, forced her into a reckoning with a topic she was raised to avoid: a re-examination of her personal history and that of her extended family, and an inescapable invitation to question her precious images, notions, and plans for the ideal life. This invitation to inner dialogue is both distressing and hopeful. What hangs in the balance is a new relationship with her son, her family, and her future. 相似文献
150.
Emilie Eve Gravel Marta Yolande Young Chantal Marielle Darzi Marcela Olavarria-Turner Andrea Ming-See Lee 《Sexuality & culture》2016,20(4):862-878
Ethnicity is an important factor in premarital sexual debut as norms regarding appropriate sexual conduct outside of marriage vary considerably across cultures. Emerging adults of South Asian descent living in Western societies are an important demographic group, yet little is known about the factors that contribute to variations in their premarital sexual debut. The goal of this study was to investigate the contributions of parental sexual socialization and attitudes toward premarital sexual behaviors to premarital sexual debut in emerging adults of South Asian descent. University students of South Asian descent (N = 87) aged 18–24 completed a questionnaire containing measures of parental attitudes toward premarital sexual behaviors, their own attitudes toward premarital sexual behaviors, and experience with oral sex and intercourse. Mediation analyses showed that perceptions of mothers’ as more permissive toward premarital sexual behaviors was associated with respondents reporting more permissive attitudes toward premarital sexual behaviors, which in turn was associated with a greater likelihood of having engaged in oral sex and intercourse. No significant effect was found for fathers. These findings suggest that parental sexual socialization may influence emerging adults of South Asian descent’s decision to engage in premarital sexual behaviors through the process of sexual attitudes formation. 相似文献