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101.
Francisco J. Abad Eduardo Garcia-Garzon Luis E. Garrido Juan R. Barrada 《Multivariate behavioral research》2017,52(4):416-429
The current study proposes a new bi-factor rotation method, Schmid-Leiman with iterative target rotation (SLi), based on the iteration of partially specified target matrices and an initial target constructed from a Schmid-Leiman (SL) orthogonalization. SLi was expected to ameliorate some of the limitations of the previously presented SL bi-factor rotations, SL and SL with target rotation (SLt), when the factor structure either includes cross-loadings, near-zero loadings, or both. A Monte Carlo simulation was carried out to test the performance of SLi, SL, SLt, and the two analytic bi-factor rotations, bi-quartimin and bi-geomin. The results revealed that SLi accurately recovered the bi-factor structures across the majority of the conditions, and generally outperformed the other rotation methods. SLi provided the biggest improvements over SL and SLt when the bi-factor structures contained cross-loadings and pure indicators of the general factor. Additionally, SLi was superior to bi-quartimin and bi-geomin, which performed inconsistently across the types of factor structures evaluated. No method produced a good recovery of the bi-factor structures when small samples (N = 200) were combined with low factor loadings (0.30–0.50) in the specific factors. Thus, it is recommended that larger samples of at least 500 observations be obtained. 相似文献
102.
Luis Manuel Blanco-Donoso Eva Garrosa Bernardo Moreno-Jiménez Elton Carlos de Almeida Sonia María Villela-Bueno 《Current psychology (New Brunswick, N.J.)》2017,36(4):755-763
This study investigates the mediating role of psychological meaningfulness among social job resources (i.e., coworkers and supervisor support), vigor, and emotional exhaustion in a nursing context. In spite of progress in understanding which organizational influence affects nurses’ vigor and emotional exhaustion, the psychological mechanisms assumed to underlie the associations have not been fully explored. The sample for this study consisted of 171 nurses from Spanish hospitals (54.4 %) and Primary Care Centers (45.6 %). The mediation model was tested using the bootstrapping procedure. Our findings confirmed that psychological meaningfulness fully mediates the impact of social job resources on vigor at work. Moreover, psychological meaningfulness partially mediated the impact of social job resources on emotional exhaustion. Results suggest that meaningfulness plays an important role in the connection between job resources, vigor, and emotional exhaustion. The findings contribute to our understanding of the psychological processes that can explain how job resources contribute to the energetic aspect of burnout and engagement among nurses. Providing nurses with more social job resources, such as coworker and supervisor support, could activate their levels of personal meaningfulness and thus enhance their levels of well-being at work. 相似文献
103.
Ramirez G Gunderson EA Levine SC Beilock SL 《Quarterly journal of experimental psychology (2006)》2012,65(3):474-487
Spatial ability is a strong predictor of students' pursuit of higher education in science and mathematics. However, very little is known about the affective factors that influence individual differences in spatial ability, particularly at a young age. We examine the role of spatial anxiety in young children's performance on a mental rotation task. We show that even at a young age, children report experiencing feelings of nervousness at the prospect of engaging in spatial activities. Moreover, we show that these feelings are associated with reduced mental rotation ability among students with high but not low working memory (WM). Interestingly, this WM?×?spatial anxiety interaction was only found among girls. We discuss these patterns of results in terms of the problem-solving strategies that boys versus girls use in solving mental rotation problems. 相似文献
104.
The purpose of the current study was to investigate a new dissonance-based prevention program that is based on the dual pathway model of eating disorders within the context of an individual's romantic relationship. A total of 209 dating couples participated in a couple-based prevention program or an assessment-only condition and completed measures of body dissatisfaction, thin-ideal internalization, disordered eating, negative affect, and relationship satisfaction at two time points (approximately one week apart) and approximately half of the sample completed 1-month follow-up measures. The prevention program significantly reduced several key risk factors for eating disorders such as environmental pressures to be thin, internalization of the thin and athletic ideals, state body dissatisfaction, and actual-ideal body discrepancy. Initial support was found for the inclusion of couples in eating disorder prevention programs as a successful way of addressing the thin ideal and its detrimental effects for women. 相似文献
105.
Verwey WB Abrahamse EL Ruitenberg MF Jiménez L de Kleine E 《Psychological research》2011,75(5):406-422
The present study examined whether middle-aged participants, like young adults, learn movement patterns by preparing and executing
integrated sequence representations (i.e., motor chunks) that eliminate the need for external guidance of individual movements. Twenty-four middle-aged participants (aged 55–62)
practiced two fixed key press sequences, one including three and one including six key presses in the discrete sequence production task. Their performance was compared with that of 24 young adults (aged 18–28). In the middle-aged participants motor chunks
as well as explicit sequence knowledge appeared to be less developed than in the young adults. This held especially with respect
to the unstructured 6-key sequences in which most middle-aged did not develop independence of the key-specific stimuli and
learning seems to have been based on associative learning. These results are in line with the notion that sequence learning
involves several mechanisms and that aging affects the relative contribution of these mechanisms. 相似文献
106.
The need to study the positive aspects of body image led to the design of the Body Appreciation Scale (BAS). The aim of the present study was to develop a Spanish adaptation of the BAS for adolescents, testing its factor structure, construct validity and any differences between girls and boys. Participants were 312 adolescents aged between 12 and 20; there were 148 females and 164 males. The validation analysis of the BAS revealed a one-factor structure with adequate internal consistency (Cronbach's alpha = .908) and construct validity (correlations with body mass index, influence of the body shape model, perceived stress, coping strategies, self-esteem and variables from the Eating Disorders Inventory-2), as well as significant differences between boys and girls (p < .01). The BAS is suitable for administration in a Spanish adolescent population as a way of analysing the positive aspects of body image. 相似文献
107.
The ability to discriminate between larger and smaller quantities has been demonstrated in several mammalian and avian species
suggesting the possibility of evolutionary conservation of this characteristic. Preference for the larger of two groups has
also been shown in fish species, although this ability has rarely been systematically studied in lower order vertebrates,
and thus the mechanisms of such ability are not understood. Here, we exploit the tendency of angelfish to seek protection
in an unfamiliar environment by joining a group of conspecifics, a behaviour called shoaling. Test fish were given a simultaneous
choice between shoals varying both in terms of numerical ratios and absolute numbers of fish. Our results provide evidence
for quantity discrimination in angelfish. In general, experimental subjects chose the larger of two shoals. Furthermore, in
agreement with Weber’s law, which holds that discrimination between two quantities depends on their ratio, the discrimination
between shoals of different quantities of fish was more difficult when the shoal sizes became more similar. The limit of discrimination
ratio was found to be below 2:1. Briefly, angelfish are able to discriminate between different quantities of conspecifics
subject to a ratio limit, a finding that implies a fitness component in this behaviour similar to what has been demonstrated
in higher order vertebrates. 相似文献
108.
109.
Sharlene Hesse-Biber Stacey Livingstone Daniela Ramirez Emily Brooke Barko Alicia Lorene Johnson 《Sex roles》2010,63(9-10):697-711
This study examined attitudes about body image and racial identity among Black women at a predominately White college in the United States. We conducted in-depth qualitative interviews with 34 women about their school experiences, family, racial identity, self-esteem, and body image. We found that early childhood influences including family and school environment had profound impacts on their racial identity and body image. Through a qualitative analysis based in grounded theory, we found that participants’ identification with White and/or Black culture produced levels of body satisfaction and a set of beauty ideals that generally corresponded to four racial identity groups: identification with White or Black culture, floating between both, or having a diverse self-identity. 相似文献
110.
Pilar Segura-Torres Laura Aldavert-Vera Anna Gatell-Segura Diego Redolar-Ripoll Ignacio Morgado-Bernal 《Neurobiology of learning and memory》2010,93(1):117-126
We studied the capacity of post-training intracranial self-stimulation (SS) to reverse or ameliorate learning and memory impairments caused by amygdala damage in rats. A first experiment showed that lesions of the basolateral amygdala (BLA) slow down acquisition of two-way active avoidance conditioning (2wAA). In a second experiment we observed that a post-training SS treatment administered immediately after each 2wAA conditioning session is able to completely reverse the disruptive effects of the BLA lesions, and the facilitative effect lasts for 10 days. A third experiment allowed us to differentiate the strong recuperative effects of the SS treatment from the slight effect caused by overtraining the same conditioning response. We concluded that SS is able to counteract the behavioral deficit induced by BLA damage, probably by activating alternative undamaged brain structures related to learning and memory, such as the hippocampus. 相似文献