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181.
This study documents how people who inject drugs (PWID) in rural Puerto Rico perceive payments for participating in HIV epidemiological studies. In-depth interviews were conducted among a subset (n = 40) of active PWID older than 18 years of age who had been previously enrolled in a much larger study (N = 360). Findings suggest that financial compensation was the main motivation for initially enrolling in the parent study. Then, as trust in the researchers developed, participants came to perceive compensation as part of a reciprocal exchange in which they assisted researchers by providing a trustful account of their experiences and researchers reciprocated with financial support. 相似文献
182.
The Candecomp/Parafac (CP) model is a well-known tool for summarizing a three-way array by extracting a limited number of components. Unfortunately, in some cases, the model suffers from the so-called degeneracy, that is a solution with diverging and uninterpretable components. To avoid degeneracy, orthogonality constraints are usually applied to one of the component matrices. This solves the problem only from a technical point of view because the existence of orthogonal components underlying the data is not guaranteed. For this purpose, we consider some variants of the CP model where the orthogonality constraints are relaxed either by constraining only a pair, or a subset, of components or by stimulating the CP solution to be possibly orthogonal. We theoretically clarify that only the latter approach, based on the least absolute shrinkage and selection operator and named the CP-Lasso, is helpful in solving the degeneracy problem. The results of the application of CP-Lasso on simulated and real life data show its effectiveness. 相似文献
183.
Aline Lima‐Nunes Cicero Roberto Pereira Isabel Correia 《European journal of social psychology》2013,43(7):627-636
In this research, we have analysed the role played by the scope of justice and belief in a just world (BJW) in discrimination against immigrants. In Study 1 (n = 185), we found that the relationship between prejudice and discrimination is mediated by a restricted view of the scope of justice. In addition, the results also showed that this mediation is moderated by BJW insofar as the mediation occurred in participants with a high level of BJW but not in participants with a low level of BJW. Studies 2 and 3 experimentally tested our prediction that the legitimising role played by the scope of justice is guided by a justice motive such as BJW. In both studies, the results showed a greater degree of discrimination against immigrants when a restricted scope of justice was considered but only when the BJW was made salient. In sum, these results introduced an innovation into the literature on the legitimation of social inequalities by demonstrating the relevant role played by the justice perceptions in discrimination against immigrants. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
184.
Roberto Colom Jason L. Stein Priya Rajagopalan Kenia Martínez David Hermel Yalin Wang Juan Álvarez-Linera Miguel Burgaleta Mª. Ángeles Quiroga Pei Chun Shih Paul M. Thompson 《Intelligence》2013,41(2):129-140
Here we apply a method for automated segmentation of the hippocampus in 3D high-resolution structural brain MRI scans. One hundred and four healthy young adults completed twenty one tasks measuring abstract, verbal, and spatial intelligence, along with working memory, executive control, attention, and processing speed. After permutation tests corrected for multiple comparisons across vertices (p < .05), significant relationships were found for spatial intelligence, spatial working memory, and spatial executive control. Interactions with sex revealed significant relationships with the general factor of intelligence (g), along with abstract and spatial intelligence. These correlations were mainly positive for males but negative for females, which might support the efficiency hypothesis in women. Verbal intelligence, attention, and processing speed were not related to hippocampal structural differences. 相似文献
185.
186.
Antonia Lonigro Roberto Baiocco Emma Baumgartner Stefania Sette Fiorenzo Laghi 《Cognitive processing》2017,18(1):67-74
The present study was designed to verify how school-aged children’s persuasive tactics changed if the persuadee was the mother or the peer. One hundred and forty-nine children at two grade levels (4th and 5th) were enrolled in the study. Persuasive strategies were investigated using pictures representing two common situations in which each child had to convince his/her playmate and his/her mother to obtain a toy. As predicted, with mothers children engaged more frequently in strategies aimed at encouraging cognitive reappraisal of the situation and offering guarantees. Conversely, with the peers, children adopted a greater variety of persuasive strategies, engaging in lower-order tactics. Implications and limitations of the study were discussed. 相似文献
187.
Giovanna Esposito Antonio P. Ribeiro Daniela Alves Miguel M. Gonçalves Maria Francesca Freda 《Journal of constructivist psychology》2017,30(4):404-426
This study discusses a model of group counseling, the narrative mediation path (NMP), which is a unique narrative, multimodal approach that combines four narrative modes (metaphoric, iconographic, writing, and bodily) and the narrative group. The purpose of the NMP is to foster reflexive processes with underachieving university students and to improve their academic performance. The study analyzes a single case of group counseling for seven underachieving economics students at an Italian university and the process of meaning construction among NMP narrative modes and the follow-up session. It applies the innovative moments coding system, a reliable method for studying change by tracking narrative innovations in sessions. More specifically, we focus on how innovative moments (IMs: action, reflection, protest, and reconceptualization) evolve during the four different narrative modes and the follow-up session. The findings suggest that the NMP fosters narrative innovations, mainly of a reflexive nature (reflection and reconceptualization). Moreover, during counseling and the follow-up session, the pattern of change is primarily characterized by reconceptualization IMs, the most complex form of narrative innovation. 相似文献
188.
Paolieri D Lotto L Leoncini D Cubelli R Job R 《British journal of psychology (London, England : 1953)》2011,102(1):19-36
In a new series of experiments with the picture-word interference paradigm, we replicated the grammatical gender interference effect in bare noun production in Italian: naming times are slower to picture-word noun pairs sharing the same gender. This effect is independent from the morphological transparency for gender, but responses are significantly slower when the distracters are transparent for gender. Overall, the pattern of results supports the assumption that in bare noun production grammatical gender is always selected, at least in languages like Italian. We assume that the differential effects of the nominal endings are due to the mechanisms involved in the recognition of grammatical gender of the distracter nouns which are sensitive to the morphological transparency for gender: lexical representation of transparent written words leads to a higher level of activation, thus resulting in stronger gender interference. 相似文献
189.
Bruder GE Alschuler DM Kroppmann CJ Fekri S Gil RB Jarskog LF Harkavy-Friedman JM Goetz R Kayser J Wexler BE 《Journal of abnormal psychology》2011,120(1):88-97
The heterogeneity of schizophrenia remains an obstacle for understanding its pathophysiology. Studies using a tone discrimination screening test to classify patients have found evidence for 2 subgroups having either a specific deficit in verbal working memory (WM) or deficits in both verbal and nonverbal memory. This study aimed to (a) replicate in larger samples differences between these subgroups in auditory verbal WM; (b) evaluate their performance on tests of explicit memory and sustained attention; (c) determine the relation of verbal WM deficits to auditory hallucinations and other symptoms; and (d) examine medication effects. The verbal WM and tone discrimination performance did not differ between medicated (n = 45) and unmedicated (n = 38) patients. Patients with schizophrenia who passed the tone screening test (discriminators; n = 60) were compared with those who did not (nondiscriminators; n = 23) and healthy controls (n = 47). The discriminator subgroup showed poorer verbal WM than did controls and a deficit in verbal but not visual memory on the Wechsler Memory Scale-Revised (Wechsler, 1987), whereas the nondiscriminator subgroup showed overall poorer performance on both verbal and nonverbal tests and a marked deficit in sustained attention. Verbal WM deficits in discriminators were correlated with auditory hallucinations but not with negative symptoms. The results are consistent with a verbal memory deficit in a subgroup of schizophrenia having intact auditory perception, which may stem from dysfunction of language-related cortical regions, and a more generalized cognitive deficit in a subgroup having auditory perceptual and attentional dysfunction. 相似文献
190.
Paul Hutchison Jolanda Jetten Roberto Gutierrez 《Journal of experimental social psychology》2011,47(6):1155-1161
Two studies investigated how group variability affects reactions to atypical group members. In Study 1 (N = 65) we manipulated group variability and found that an atypical group member was evaluated more positively when the group was heterogeneous than when the group was homogeneous. In Study 2 (N = 276) we also manipulated group value and found a significant interaction whereby an atypical group member was evaluated more positively when the group was homogeneous and group members valued heterogeneity, but was evaluated more negatively when the group was heterogeneous and group members valued homogeneity. The results suggest that deviant or atypical members will not inevitably be rejected by the group, but rather that reactions to deviance are shaped and guided by the dynamic relationship between how the group is perceived by its members and their ideological beliefs about what is good for the group. 相似文献