Predicting children's media use in the USA: Differences in cross‐sectional and longitudinal analysis

The purpose of this paper is to examine the predictors of children's media use in the USA, comparing cross‐sectional and longitudinal analyses. Data come from Waves 1 and 2 of the Child Development Supplement (CDS‐I; CDS‐II), a nationally representative sample of American children aged 0–12 in 1997 and 5–18 in 2002. Twenty‐four hour time use diaries are used to assess children's time spent with media (television, video games, computers, and reading). Predictors examined include socio‐demographics, neighbourhood quality, family factors, and other media use. Ordinary least square (OLS) multiple regressions were performed by three age groups (preschoolers, early school age, and preadolescence). The findings suggest that neighbourhood quality, parental limits and family conflict are significant predictors of children's media use within time or over time, but the significance depends on the type of media and child's developmental stage. In addition, children's television viewing and reading habits are formed early in life and reinforced over time. This study is among the first to provide empirical evidence for the effect of early contextual factors on the life course of children's media use from a developmental perspective.     

Cathodal transcranial direct current stimulation of the right Wernicke's area improves comprehension in subacute stroke patients

Previous studies have shown the appearance of right-sided language-related brain activity in right-handed patients after a stroke. Non-invasive brain stimulation such as transcranial direct current stimulation (tDCS) and repetitive transcranial magnetic stimulation (rTMS) have been shown to modulate excitability in the brain. Moreover, rTMS and tDCS have been found to improve naming in non-fluent post-stroke aphasic patients. Here, we investigated the effect of tDCS on the comprehension of aphasic patients with subacute stroke. We hypothesized that tDCS applied to the left superior temporal gyrus (Wernicke’s area) or the right Wernicke’s area might be associated with recovery of comprehension ability in aphasic patients with subacute stroke. Participants included right-handed subacute stroke patients with global aphasia due to ischemic infarct of the left M1 or M2 middle cerebral artery. Patients were randomly divided into three groups: patients who received anodal tDCS applied to the left superior temporal gyrus, patients who received cathodal tDCS applied to the right superior temporal gyrus, and patients who received sham tDCS. All patients received conventional speech and language therapy during each period of tDCS application. The Korean-Western Aphasia Battery (K-WAB) was used to assess all patients before and after tDCS sessions. After intervention, all patients had significant improvements in aphasia quotients, spontaneous speech, and auditory verbal comprehension. However, auditory verbal comprehension improved significantly more in patients treated with a cathode, as compared to patients in the other groups. These results are consistent with the role of Wernicke’s area in language comprehension and the therapeutic effect that cathodal tDCS has on aphasia patients with subacute stroke, suggesting that tDCS may be an adjuvant treatment approach for aphasia rehabilitation therapy in patients in an early stage of stroke.     

Testing mediator variables in a resistance training intervention for obese adults with type 2 diabetes

A poor understanding of behaviour change mechanisms has hindered the development of effective physical activity interventions. The aim of this study was to identify potential mediators of change in a home-based resistance training (RT) program for obese individuals with type 2 diabetes. Obese individuals with type 2 diabetes (N?=?48) were randomly allocated to either an RT intervention (n?=?27) or a control group (n?=?21) for the 16-week study period. The study sample included 16 men and 32 women and the mean age of participants was 54.4 (±11.7) years. Participants in the RT group received a multi-gym and dumbbells and home supervision from a certified personal trainer. RT behaviour was measured using a modified Godin Leisure Time Questionnaire. Social-cognitive constructs were measured and tested in a mediating variable framework using a product-of-coefficients test. The intervention had a significant effect on RT behaviour (p?相似文献   

Religion,Human Rights,and Neo‐liberalism in a Post‐Humanist Era

In a modern and secularized world, churches and religious groups that fight in the public sphere for social justice justify these actions in the name of defending human rights. This has been the path taken to express in non‐religious language what they understand to be a God‐given mission. Based on the distinction between civil rights, political rights, and social rights, which make up the set of human rights, this article analyzes the relationship between the notion of religious mission and the struggle for human rights; how neoliberal ideology, in an anti‐humanist perspective, criticizes the notion of social rights and social justice with the denial of any human right above the laws of the market; and the challenges that this neoliberal ideology poses for the justification of the social and political action of religious groups and institutions in the contemporary globalized world with a growing post/anti‐humanist culture.     

Exploratory factor analysis for small samples

Traditionally, two distinct approaches have been employed for exploratory factor analysis: maximum likelihood factor analysis and principal component analysis. A third alternative, called regularized exploratory factor analysis, was introduced recently in the psychometric literature. Small sample size is an important issue that has received considerable discussion in the factor analysis literature. However, little is known about the differential performance of these three approaches to exploratory factor analysis in a small sample size scenario. A simulation study and an empirical example demonstrate that regularized exploratory factor analysis may be recommended over the two traditional approaches, particularly when sample sizes are small (below 50) and the sample covariance matrix is near singular.     

Maternal Depressive Symptoms and Behavior Problems in Preschool Children from Low-Income Families: Comparison of Reports from Mothers and Teachers

This study compared behavior problems of children of mothers with elevated depressive symptoms and children of mothers with non-elevated depressive symptoms, using the same measure for mothers and teachers. Participants included 914 mother–teacher dyads of low-income children (M age of child = 62.9 months, SD = 4.0) who participated in the Early Head Start Research and Evaluation Project. Mothers completed a shortened version of CES-D to evaluate their own depressive symptoms. Teachers and mothers completed the Family and Child Experiences Survey Interviews (FACES) to assess children’s behavior problems. The results showed that children of mothers with elevated depressive symptoms-higher than the cut-off score for possible depression- showed higher aggressive and hyperactive behaviors than did children of mothers with non-elevated depressive symptoms according to the mothers’ rating; however, teachers rated the children no differently. Both mothers and teachers reported higher internalizing behaviors in children of mothers with elevated depressive symptoms than did those of mothers with non-elevated depressive symptoms. Maternal depressive symptoms moderated the relations between informants (mothers and teachers) and externalizing behaviours (aggressive and hyperactive) of children. These findings underscore the need for research in different settings such as at home and at school, to measure children’s behavior problems in order to gain a more comprehensive perspective on child functioning. Results suggest an emphasis on intervention or prevention programs targeting internalizing behavior problems, specifically for children of depressed mothers in low-income families.     

An analysis of the time course of attention in preview search

We used a probe dot procedure to examine the time course of attention in preview search (Watson & Humphreys, 1997). Participants searched for an outline red vertical bar among other new red horizontal bars and old green vertical bars, superimposed on a blue background grid. Following the reaction time response for search, the participants had to decide whether a probe dot had briefly been presented. Previews appeared for 1,000 msec and were immediately followed by search displays. In Experiment 1, we demonstrated a standard preview benefit relative to a conjunction search baseline. In Experiment 2, search was combined with the probe task. Probes were more difficult to detect when they were presented 1,200 msec, relative to 800 msec, after the preview, but at both intervals detection of probes at the locations of old distractors was harder than detection on new distractors or at neutral locations. Experiment 3A demonstrated that there was no difference in the detection of probes at old, neutral, and new locations when probe detection was the primary task and there was also no difference when all of the shapes appeared simultaneously in conjunction search (Experiment 3B). In a final experiment (Experiment 4), we demonstrated that detection on old items was facilitated (relative to neutral locations and probes at the locations of new distractors) when the probes appeared 200 msec after previews, whereas there was worse detection on old items when the probes followed 800 msec after previews. We discuss the results in terms of visual marking and attention capture processes in visual search.