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121.
The present article describes a software program in Visual Basic .NET designed to simulate three slot machines on a computer
screen. This software is described in detail regarding utility, downloading, and usage; and data are presented illustrating
the software’s potential for researchers interested in gambling behavior. A simulation of multiple slot machines such as this
enables researchers to evaluate players’ preferences across various machines. In the highlighted experiment, 18 recreational
slot machine players played the software for extra course credit and a chance at cash prizes. All participants played a version
of the simulation in which every 5th response on average was a win, whereas the remaining trials were a loss. However, on
those loss trials, a varying distribution of almost wins or near misses (i.e., two winning symbols on the payoff line and
the final winning symbol directly above or below the payoff line) were presented in percentages of 15, 30, or 45. While no
preferences across the three options could be predicted on the basis of reinforcement history alone, deviations from equal
choices across the games were noted and appeared to be the result of the presentations of near-miss losing trials. Implications
for a greater understanding of pathological gambling are presented. 相似文献
122.
This study examined the effects of 4 subtypes of social support (tangible, affective, positive social interaction, and emotional/informational) and gender on the severity and duration of depressive symptoms within the general adult Canadian population. Data were collected from the Canadian Community Health Survey (CCHS; Statistics Canada, 2002 ). Upon meeting predetermined criteria, 6,316 participants were included in the study. The findings suggest that, overall, positive social interaction was significantly associated with decreases in depression severity; while emotional/informational support was significantly associated with increases in depression severity. Positive social interaction and emotional/informational support appeared to significantly decrease the duration of depression. Interesting gender differences also emerged among the 4 subtypes of social support. Implications of the findings are discussed. 相似文献
123.
Freedenthal S 《Suicide & life-threatening behavior》2007,37(1):22-34
Differences in rates and predictors of mental health service use among 2,226 Black, Hispanic, and White adolescents (aged 12-17) who reported recent suicidal thoughts or an attempt were examined. Black adolescents were 65% (OR = .65, p < .05), and Hispanic adolescents were 55% (OR = .55, p < .001), as likely as White adolescents to report service use, even when controlling for need for care and ability to secure services. Suicide attempt and psychiatric symptoms each interacted with race to increase the odds of service use uniquely for White adolescents. Results indicate that racial disparities characterize adolescents' mental health service use even when suicide risk increases. 相似文献
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126.
Augustine Osman Dorian A. Lamis Stacey Freedenthal Peter M. Gutierrez Mary McNaughton-Cassill 《Journal of personality assessment》2014,96(1):103-112
In this study, we examined estimates of internal consistency reliability, measurement invariance, and differential correlates of the Multidimensional Scale of Perceived Social Support (MSPSS; Zimet, Dahlem, Zimet, & Farley, 1988) in samples of undergraduate men (n = 270) and women (n = 340). The MSPSS is designed to assess 3 sources of perceived social support: family, friends, and significant others. The participants ranged in age from 18 to 24 years (M age = 19.60, SD = 1.4 years). First, composite scale reliability and coefficient omega methods provided adequate estimates of internal consistency reliability for the original MSPSS total and subscale scores. Second, results of multiple-groups invariance confirmatory factor analysis provided support for configural and metric invariance. Partial measurement invariance was attained for scalar and strict measurement invariance across men and women. Additionally, given the high correlations among the first-order factors, we conducted multiple-groups bifactor item response theory (bifactor-IRT) analysis to evaluate further the performances of the individual MSPSS items across gender. Support for the bifactor model was strong. Third, we conducted a series of simultaneous regression analyses to identify potential correlates of the social support construct for women and men. 相似文献
127.
Nelson Hauck-Filho Marco Antônio Pereira Teixeira 《Journal of personality assessment》2014,96(4):459-464
A number of studies have addressed the dimensionality and the measurement invariance of the Levenson Self-Report Psychopathy scale (LSRP; Levenson, Kiehl, & Fitzpatrick, 1995). However, previous investigations exclusively relied on North American samples and mainly on statistical methods that assume data as normally and continuously distributed. The aim of this study was to further investigate dimensionality and differential item functioning for gender in the 26-item LSRP scale in a Brazilian population-based sample using analytical methods adequate for ordered categorical variables. Findings revealed strong evidence for a 2-factor model, similar to the original factor structure of the instrument. Only 3 items presented negligible differential functioning for gender. We address the implications of these results, and stress the need for expanding research on the measurement and structural invariance of the LSRP scale by means of cross-cultural investigations. 相似文献
128.
Global precedence (GP) occurs when individuals exhibit the tendency to notice global, or holistic, information before they notice local, or component, parts of a visual stimulus. Factors such as meaningfulness of components are held constant when measuring GP; however, varying such factors informs us about the underlying mechanisms of GP. In addition, investigating these effects developmentally has increased the understanding of global-local processing. This experiment examines the effect of meaningfulness (letters vs. nonletters) on adults' (n = 24) and 5-year-old children's (n = 23) GP. Adults and children were more accurate if there was one nonletter component, and children were more accurate when the target was located at the local level. However, adults and children were faster if both levels were letters. The developmental path of low-level sensory factors may differ from that of high-level cognitive factors in visual processing, and a general mechanism may account for this. 相似文献
129.
Ana Isabel Pereira Luisa Barros Denisa Mendonça Peter Muris 《Journal of child and family studies》2014,23(2):399-409
Theoretical models have emphasized the roles played by parental anxiety and behavior in the development of childhood anxiety problems. Little is known regarding the differential impacts of mothers and fathers or regarding the processes that mediate these influences. The present study examines the relationships between maternal and paternal trait anxiety, overprotection, and emotional support on the one hand and anxiety symptoms in children on the other hand. This study also explores the mediating role of children’s cognitive vulnerabilities to anxiety disorders in the relationship between parental variables and children’s anxiety. A sample of 80 children and their parents (fathers and mothers), selected from an initial screening of 905 school-aged children, participated in this study. The results indicate that both parents had unique influences on children’s anxiety symptoms: maternal trait anxiety and paternal overprotection and concern were found to independently and positively contribute to children’s anxiety. Furthermore, children’s interpretative biases mediated the relation between maternal trait anxiety and children’s anxiety symptoms. The results of this study underline the importance of considering both paternal and maternal factors in the development of children’s anxiety problems. These findings also have implications for theoretical models of the etiology of anxiety and for the treatment of these problems in children. 相似文献
130.
A head camera was used to examine the visual correlates of object name learning by toddlers as they played with novel objects and as the parent spontaneously named those objects. The toddlers’ learning of the object names was tested after play, and the visual properties of the head camera images during naming events associated with learned and unlearned object names were analyzed. Naming events associated with learning had a clear visual signature, one in which the visual information itself was clean and visual competition among objects was minimized. Moreover, for learned object names, the visual advantage of the named target over competitors was sustained, both before and after the heard name. The findings are discussed in terms of the visual and cognitive processes that may depend on clean sensory input for learning and also on the sensory–motor, cognitive, and social processes that may create these optimal visual moments for learning. 相似文献