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61.
Umberto Castiello Claudia Bonfiglioli Kerry Bennett 《Attention, perception & psychophysics》1998,60(4):662-672
This study asked the question, “Will the motor pattern to a perceived two-dimensional (2-D) object differ from that same object when it is perceived as three dimensional (3-D)?” Subjects were required to reach and grasp an apple that could appear to be 2-D or 3-D. Two experimental sessions were conducted. In Condition A, the apple was initially perceived to be 2-D, but, for 20% of trials, it suddenly shifted to a 3-D apple at movement onset. In Condition B, the apple was initially perceived to be 3-D, but, for 20% of trials, it suddenly shifted to a 2-D silhouette of the same apple. For control trials, subjects grasped the perceived 2-D apple as if it were a disc (82%), and they grasped the 3-D apple, as they would a normal apple, with a whole-hand grasp (86%). For Condition A perturbed trials, there was a rapid change from a 2-D precision grip to a 3-D whole-hand prehension, whereas the converse was true for the opposite perturbation. Peak acceleration was anticipated for Condition A perturbed trials but not for Condition B perturbed trials. These results indicate that the motor patterns we use in interacting with an object are strongly influenced by the way we perceive the object in real time, and that object affordances, such as dimension, can override the influence exerted by existing representations. 相似文献
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MATERNAL SELF‐REPORTED DEPRESSIVE SYMPTOMS AND MATERNAL CORTISOL LEVELS INTERACT TO PREDICT INFANT CORTISOL LEVELS
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Jennifer E. Khoury Andrea Gonzalez Robert Levitan Mario Masellis Vincenzo Basile Leslie Atkinson 《Infant mental health journal》2016,37(2):125-139
Three basic findings have emerged from research on maternal depressive symptoms and offspring hypothalamic–pituitary–adrenal functioning: (a) Mothers’ depressive symptoms are positively associated with their offsprings’ cortisol stress response, (b) numerous individual and interpersonal maternal characteristics moderate this association, and (c) maternal and infant cortisol levels are highly correlated. In combination, these findings have suggested that maternal cortisol levels may moderate the relation between maternal depressive symptoms and infant cortisol responsivity; the current study assessed this hypothesis. Participants were 297 mother–infant dyads who were recruited from the community. Maternal depressive symptoms were assessed via self‐report. Dyads participated in two differentially stressful infant challenges when infants were 16 and 17 months old. Mother and infant salivary cortisol was collected before and after challenges. Results indicate that maternal cortisol levels moderated associations between maternal depressive symptoms and infant cortisol levels across both challenges. Infants showed higher cortisol levels if their mothers had both higher depressive symptoms and higher cortisol levels, as compared to infants of mothers with higher depressive symptoms and lower cortisol, and to infants of mothers with lower depressive symptoms and either higher or lower cortisol levels. We discuss findings in relation to environmental and biological factors that may contribute to the intergenerational transmission of depressive symptoms. 相似文献
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The current study examines the implication of attachment style in both immediate coping and long-term adjustment of prisoners of war (POWs). 164-ex-POWs and 184 matched controls filled out a battery of questionnaires, 18 years after the war. They were questioned about their subjective experience of captivity, current mental health status, and characteristic attachment style. Secure individuals, who reported lower levels of suffering, less helplessness and more active coping during captivity, exhibited better long-term adjustment. Avoidant ex-POWs, who reported helplessness and hostility, and ambivalent individuals, who felt abandoned and vulnerable, reported long-term maladjustment. The role of attachment style as a stress-moderating resource is discussed. © 1998 John Wiley & Sons, Ltd. 相似文献
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Mario Sainz Rocío Martínez Miguel Moya Rosa Rodríguez‐Bailn 《International journal of psychology》2019,54(4):423-430
Differences between groups in socio‐economic status (SES) are becoming more salient nowadays. In this context, we examined the animalistic and mechanistic dehumanization that both low and high‐SES groups may experience respectively by conducting three studies. In study 1, we manipulated the SES of two fictitious groups (low vs. high‐SES) and measured the humanity ascribed to them. Results showed that the low‐SES group was animalized in comparison with the high‐SES group, which was mechanized. In study 2, we manipulated the humanity of two fictitious groups by describing them as animals or machines and measured the perceived SES of the groups. Participants tended to attribute lower SES to the group described as animals and higher SES to the group described as machines. Finally, in study 3, we used an Implicit Association Test to replicate the results of studies 1 and 2. Taken together, these studies show that low‐SES groups are considered as animal‐like whereas high‐SES groups are seen as robot‐like. We discuss the implications of these findings in relation to the justification of income inequality within our society. 相似文献