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901.
Natasha J. Cabrera Jacqueline D. Shannon Stephanie J. Mitchell Jerry West 《Sex roles》2009,60(7-8):510-526
The present study examines the associations between Mexican American mothers’ and fathers’ pregnancy intentions, fathers’ participation in prenatal activities and mother–infant interactions and father engagement with 9 month-old infants in a nationally representative sample of 735 infants and their parents participating in the Early Childhood Longitudinal Study—Birth Cohort. After controlling for a host of variables, multiple regressions revealed that when mothers wanted the pregnancy, fathers engaged in more literacy and caregiving activities than when mothers did not want the pregnancy. When couples disagreed about wanting the pregnancy, fathers engaged in more literacy activities and showed more warmth than when they agreed. Relationship quality significantly moderated the effects of parents’ wantedness on mother–infant interactions and fathers’ engagement in literacy activities. 相似文献
902.
This study evaluated a structural equation model of objectification theory among European American (EA; n = 408) and African American women (AA; n = 233). Modeling results indicated a particularly strong association between thin-ideal internalization/body monitoring and eating disorder symptoms, with weaker relationships among body dissatisfaction, depression, anxiety, and eating disorder symptoms. The measurement model was not equivalent for EAs and AAs; however, the structural model was invariant, suggesting that the relationships among these variables may be similar for both groups. Thus, objectification theory does appear to be applicable to AA women, although specification of relevant constructs and refinement of assessment instruments is warranted. 相似文献
903.
Children at about age 18 months experience acceleration in word learning. This vocabulary explosion is a robust phenomenon, although the exact shape and timing vary from child to child. One class of explanations, which we term collectively as leveraged learning , posits that knowledge of some words helps with the learning of others. In this framework, the child initially knows no words and so learning is slow. As more words are acquired, new words become easier and thus it is the acquisition of early words that fuels the explosion in learning. In this paper we examine the role of leveraged learning in the vocabulary spurt by proposing a simple model of leveraged learning. Our results show that leverage can change both the shape and timing of the acceleration, but that it cannot create acceleration if it did not exist in the corresponding model without leveraging. This model is then applied to the Zipfian distribution of word frequencies, which confirm that leveraging does not create acceleration, but that the relationship between frequency and the difficulty of learning a word may be complex. 相似文献
904.
Mitchell E. Berman Michael S. McCloskey Jennifer R. Fanning Julie A. Schumacher Emil F. Coccaro 《Psychological science》2009,20(6):714-720
ABSTRACT— We tested the theory that central serotonin (5-hydroxytryptamine, or 5-HT) activity regulates aggression by modulating response to provocation. Eighty men and women (40 with and 40 without a history of aggression) were randomly assigned to receive either 40 mg of paroxetine (to acutely augment serotonergic activity) or a placebo, administered using double-blind procedures. Aggression was assessed during a competitive reaction time game with a fictitious opponent. Shocks were selected by the participant and opponent before each trial, with the loser on each trial receiving the shock set by the other player. Provocation was manipulated by having the opponent select increasingly intense shocks for the participant and eventually an ostensibly severe shock toward the end of the trials. Aggression was measured by the number of severe shocks set by the participant for the opponent. As predicted, aggressive responding after provocation was attenuated by augmentation of serotonin in individuals with a pronounced history of aggression. 相似文献
905.
Astrid Mueller James E. Mitchell Ross D. Crosby Heide Glaesmer 《Behaviour research and therapy》2009,47(8):705-891
The aims of the study were to estimate the prevalence rate of compulsive hoarding, and to determine the association between compulsive hoarding and compulsive buying in a nationally representative sample of the German population (N = 2307). Compulsive hoarding was assessed with the German version of the Saving Inventory-Revised (SI-R; Frost, R.O., Steketee, G., & Grisham, J. (2004). Measurement of compulsive hoarding: saving inventory-revised. Behaviour Research and Therapy, 42, 1163-1182.). The point prevalence of compulsive hoarding was estimated to be 4.6%. Individuals with compulsive hoarding did not differ significantly from those without compulsive hoarding regarding age, gender, and other sociodemographic characteristics. Significant correlations were found between the compulsive hoarding and the compulsive buying measures. Participants with compulsive hoarding reported a higher propensity to compulsive buying than respondents without hoarding. About two thirds of participants classified as having compulsive hoarding were also defined as suffering from compulsive buying. In summary, these results suggest that compulsive hoarding may be relatively prevalent in Germany and they confirm the close association between compulsive hoarding and compulsive buying through the investigation of a large scale representative sample. 相似文献
906.
The use of visual habituation in the study of infant cognition and learning is reviewed. This article traces the history of the technique, underlying theory, and procedural variation in its measurement. In addition, we review empirical findings with respect to the cognitive processes that presumably contribute to habituation, studies of developmental course and long-term prediction, as well as recent attempts to address or explain the phenomenon of visual habituation through the use of mathematical or quantitative models. The review ends with an appeal for a return to the study of habituation per se as a valid measure of infant learning, rather than relegating the phenomenon to its use as a technique for familiarizing infants in procedures testing for discrimination or recognition. 相似文献
907.
Nicky Mitchell 《Counselling and Psychotherapy Research》2009,9(4):280-286
Aims: This study comprised the second phase of a small‐scale exploration of the viability of a computerised CBT intervention for depression within the context of a Higher Education counselling service. Method: The program ‘Beating the Blues’? (BtB) was offered to students experiencing depression, with measurement of uptake, attrition, satisfaction and effectiveness of the program. Results: Outcomes were calculated alone and in combination with those found in Phase One (previously presented in this journal), to enable a whole study report. In Phase Two, 15 students commenced BtB. The low completion rate in the intended academic year of the study led to extension over a further term. Seven participants completed the programme in Phase Two, a rate of 46.7%; 27 students used the programme over the entire study, with 63% completion. In both phases depression scores fell significantly following completion of the programme; anxiety scores fell significantly for Phase Two completers. User feedback was mixed. Clinical implications and conclusions: Many students have a comparatively short wait for a psychological service which may reduce interest in a computerised self‐help intervention and may help explain the low uptake. It is suggested that whilst CCBT is acceptable and effective for some depressed students, the number of sufficiently interested students, together with reported satisfaction from the intervention, was too small to warrant current inclusion of BtB within our service, particularly given its cost implications. Suggestions for further CCBT‐related investigations within this setting are made. 相似文献
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