家庭收入与青少年睡眠质量的关系:歧视知觉、自尊的链式中介作用

本研究探讨家庭收入与青少年睡眠质量的关系以及歧视知觉、自尊在其中的中介作用。采用家庭收入问卷、歧视知觉问卷、Rosenberg自尊量表(SES)与匹兹堡睡眠质量指数(PSQI)对广东省某地区两所中学1053名青少年进行匿名施测。结果发现:(1)以PSQI得分≥8作为睡眠问题的参考界值,青少年睡眠问题的检出率为15.60%;(2)歧视知觉、自尊在家庭收入与青少年睡眠质量关系中起链式中介作用。因此,家庭收入既直接影响青少年的睡眠质量,又通过歧视知觉、自尊的链式中介作用影响青少年的睡眠质量。     

Home behavioral economics: Childcare decisions in the United States and Norway

This research investigated how a couple decides which parent stays home as a childcare provider by attempting to determine the economic value on maternal care versus paternal care while examining the potential effects of nationality, gender role attitudes, and social support. We collected data from 240 American participants and 250 Norwegian participants who were asked to decide how much a mother needs to earn to allow her husband to stay at home to provide childcare and how much a father needs to earn to allow his wife to stay at home and provide childcare, in addition to items assessing gender role attitudes. No effect of social support was found, but Norwegians were slightly more likely than Americans to place a heavier earning burden on the husband. There were few differences in gender role attitudes by nationality. The impact of public policy and social desirability on the results and childcare decision making are discussed.     

The Combined Effects of Measurement Error and Omitting Confounders in the Single-Mediator Model

Mediation analysis requires a number of strong assumptions be met in order to make valid causal inferences. Failing to account for violations of these assumptions, such as not modeling measurement error or omitting a common cause of the effects in the model, can bias the parameter estimates of the mediated effect. When the independent variable is perfectly reliable, for example when participants are randomly assigned to levels of treatment, measurement error in the mediator tends to underestimate the mediated effect, while the omission of a confounding variable of the mediator-to-outcome relation tends to overestimate the mediated effect. Violations of these two assumptions often co-occur, however, in which case the mediated effect could be overestimated, underestimated, or even, in very rare circumstances, unbiased. To explore the combined effect of measurement error and omitted confounders in the same model, the effect of each violation on the single-mediator model is first examined individually. Then the combined effect of having measurement error and omitted confounders in the same model is discussed. Throughout, an empirical example is provided to illustrate the effect of violating these assumptions on the mediated effect.     

Regulatory job stressors and their within-person relationships with ego depletion: The roles of state anxiety,self-control effort,and job autonomy

Our research aimed at disentangling the underlying processes of the adverse relationship between regulatory job stressors and ego depletion. Specifically, we analyzed whether state anxiety and self-control effort would mediate the within-person relationships of time pressure, planning and decision-making, and emotional dissonance with ego depletion. In addition, we also tested potential attenuating effects of situational job autonomy on the adverse effects of regulatory job stressors on state anxiety, self-control effort, and ego depletion. Based on an experience sampling design, we gathered a sample of 97 eldercare workers who provided data on 721 experience-sampling occasions. Multilevel moderated serial mediation analyses revealed that time pressure and emotional dissonance, but not planning and decision-making, exerted significant serial indirect effects on ego depletion via state anxiety and self-control effort. Finally, we found conditional serial indirect effects of all three regulatory job stressors on ego depletion as a function of job autonomy. Theoretical implications for scholarly understanding of coping with regulatory job stressors are discussed.     

Assessing moderated mediation in linear models requires fewer confounding assumptions than assessing mediation

It is well known from the mediation analysis literature that the identification of direct and indirect effects relies on strong no unmeasured confounding assumptions of no unmeasured confounding. Even in randomized studies the mediator may still be correlated with unobserved prognostic variables that affect the outcome, in which case the mediator's role in the causal process may not be inferred without bias. In the behavioural and social science literature very little attention has been given so far to the causal assumptions required for moderated mediation analysis. In this paper we focus on the index for moderated mediation, which measures by how much the mediated effect is larger or smaller for varying levels of the moderator. We show that in linear models this index can be estimated without bias in the presence of unmeasured common causes of the moderator, mediator and outcome under certain conditions. Importantly, one can thus use the test for moderated mediation to support evidence for mediation under less stringent confounding conditions. We illustrate our findings with data from a randomized experiment assessing the impact of being primed with social deception upon observer responses to others’ pain, and from an observational study of individuals who ended a romantic relationship assessing the effect of attachment anxiety during the relationship on mental distress 2 years after the break‐up.     

Testing social-cognitive mediators for objective estimates of physical activity from the Healthy Eating and Active Living for Diabetes in Primary Care Networks (HEALD-PCN) study

Objective: More evidence from prospective studies is needed to determine ‘if’ and ‘how’ social cognitive constructs mediate behaviour change. In a longitudinal study, we aimed to examine potential social cognitive mediators of objectively measured physical activity (PA) behaviour among people with type 2 diabetes (T2D) who participated in a six-month PA intervention. Methods: All participants from the proven effective Healthy Eating and Active Living for Diabetes in Primary Care Networks trial were included for this secondary analysis. Change in pedometer-derived daily step counts (baseline to six months) was the outcome of interest. Primary constructs of interest were from Social Cognitive Theory, however constructs from and Theory of Planned Behaviour were also tested in a mediating variable framework using a product-of-coefficients test. Results: The sample (N = 198) had a mean age of 59.5 (SD 8.3) years, haemoglobin A1c 6.8% (SD 1.1), 50% women, BMI 33.6 kg/m² (SD 6.5), systolic pressure 125.6 mmHg (SD 16.2) and average daily steps were 5879 (SD 3130). Daily pedometer-determined steps increased for the intervention group compared to usual care control at six-months (1481 [SD 2631] vs. 336 [SD 2712]; adjusted p = .002). There was a significant action theory test effect for ‘planning’ (A = .21, SE = .10, p = .037), and significant conceptual theory test results for ‘subjective norms’ (B = 657, SE = 312, p = .037) and ‘cons’ (B = ?664, SE = 270, p = .015). None of the constructs satisfied the criteria for mediation. Conclusions: We were unable to account for the effect of a pedometer-based PA intervention for people with T2D through our examination of mediators. Our findings are inconsistent with some literature concerning PA interventions in diabetes; this may be due to variability in measures used or in study populations.     

Can traffic violations be traced to gender-role,sensation seeking,demographics and driving exposure?

BackgroundTraffic safety is often expressed as the ‘inverse of accidents’. However, it is more than the mere absence of accidents. Past studies often looked for associations between accidents and self-reports like the Driver Behaviour Questionnaire (DBQ; Reason, Manstead, Stradling, Baxter, & Campbell, 1990). The focus in this study changed from counting accidents to quantifying unsafe acts as violations. The objective was to show that drivers' specific violations can be traced to personal characteristics such as sensation seeking (SSS-V; Zuckerman, 1994), gender role (BSRI; Bem sex role inventory, Bem, 1974), demographics, and driving exposure.MethodA web-based questionnaire was distributed, integrating several known questionnaires. Five hundred and twenty-seven questionnaires were completed and analyzed.ResultsSensation seeking, gender role, experience, and age predicted respondents’ score on the DBQ, as well as the interaction of sensation seeking with gender and gender role. Gender role was a more valid predictor of driver behavior than gender.ConclusionsThe effect of gender role on drivers’ self-reported violation tendency is the most interesting and the most intriguing finding of this survey and indicates the need to further examine gender role affects in driving.     

Social role effects on gender stereotyping in Germany and Japan

Social role theory postulates that gender stereotypes are restrained for men and women observed in the same social role. Cultural differences in the valuation of communal attributes might moderate this effect. To examine this possibility, 288 participants (144 German, 144 Japanese) estimated the communal and agentic attributes of an average man or woman described in a male‐dominated role, a female‐dominated role, or without role information. We hypothesized and found that in Germany and Japan, participants perceived men as more agentic than women without role information and as similarly agentic in the same role. However, for communion, German and Japanese participants reacted differently. German participants perceived women as more communal than men without role information and in male‐dominated roles and perceived men as more communal than women in female‐dominated roles. Japanese participants perceived all targets as similarly communal, regardless of role or gender, suggesting that communion is generally expected in Japan.     

Le soutien organisationnel perçu peut-il agir comme une ressource sociale ? Une analyse sous l’angle de la théorie de la conservation des ressources

This paper reports an empirical study in which perceived organizational support is considered as a social resource in a stress model conceived within the perspective of Conservation of Resources theory. A study conducted among 181 employees and their supervisors reveals that role stressors impact work outcomes through perceptions of anticipated or actual resource loss and lack of resource gains. Moreover, perceived organizational support exerts a moderating effect in the relationships between resource loss and lack of resource gains and emotional exhaustion, affective commitment, and job performance. We discuss the implications of these findings for our understanding of the psychological mechanisms associated with perceived organizational support.