A mixed-effects expectancy-valence model for the Iowa gambling task

The Iowa gambling task (IGT; Bechara, Damasio, Damasio, & Anderson, 1994) was developed to simulate real-life decision making under uncertainty. The task has been widely used to examine possible neurocognitive deficits in normal and clinical populations. Busemeyer and Stout (2002) proposed the expectancy-valence (EV) model to explicitly account for individual participants’ repeated choices in the IGT. Parameters of the EV model presumably measure different psychological processes that underlie performance on the task, and their values may be used to differentiate individuals across different populations. In the present article, the EV model is extended to include both fixed effects and subject-specific random effects. The mixed-effects EV model fits the nested structure of observations in the IGT naturally and provides a unified procedure for parameter estimation and comparisons among groups of populations. We illustrate the utility of the mixed-effects approach with an analysis of gender differences using a real data set. A simulation study was conducted to verify the advantages of this approach.     

Representations of Sharia in Three Global Cities: Sydney,New York and Geneva 2008–2013

Drawing on methodologies used to analyse the negative portrayals of new religious movements in the press, this article analyses the way Sharia has been reported in key newspapers in Sydney, New York and Geneva from 2008 to 2013. It differentiates between perceptions of Islamic law as practised in these global cities, as well as in other countries, and examines the different levels of perception. The article also investigates portrayals and perceptions of ‘good’ Sharia (as in Islamic banking) as opposed to ‘bad’ Sharia (as in family and criminal law). It discovers that Sydney’s newspapers are more sympathetic than those in New York and Geneva towards Sharia-compliant finances. It then argues that the move towards a more Muslim consumer market in the media is not a homogenous process among Western global cities.     

中国成年人认知风格调查报告*

应用《心理健康素质测评系统·中国成年人认知风格问卷》对全国23个省、市、自治区的6432名成年人的认知风格进行了调查。结果发现:中国成年人的认知风格总体水平较好。比较不同人口学特征的成年人在认知风格各维度上的差异发现:(1)女性在灾难化维度上得分显著高于男性;(2)随着年龄的增长,成年人的认知风格总均分及各维度得分均呈上升趋势;(3)农村成年人认知风格总均分及各维度得分显著高于城市成年人;(4)随着受教育程度的提高,成年人的认知风格总均分及各维度得分呈下降趋势;(5)年龄段与受教育程度在选择性提取维度上存在交互作用,其中初中文化程度的老年组被试得分最高。     

The effect of diabetes knowledge and attitudes on self-management and quality of life among people with type 2 diabetes

We examined the effect of diabetes knowledge and attitudes on self-management and quality of life (QoL) of people with type 2 diabetes mellitus (T2DM). We employed a cross-sectional study design. A total of 137 female and 129 male participants with T2DM completed the diabetes knowledge scale (DKN), Diabetes Integration Scale-19 (ATT19), Summary of Diabetes Self-care Activities (SDSCA) scale, and Diabetes Quality of Life (DQoL) scale, measuring diabetes knowledge, attitudes, self-management, and QoL respectively. The SDSCA scale measures diet, exercise, blood glucose monitoring, and foot care. The DQoL scale measures satisfaction and impact of QoL. An initial path model that tested the inter-relationships of the study variables was first identified based on previous research. Then, the path model was tested using Mplus 7.3. In the final model, diabetes knowledge was a significant predictor of attitudes and self-management in terms of blood glucose monitoring and foot care. Attitudes was a significant predictor of impact of QoL. Self-management in terms of blood glucose monitoring was a significant predictor of impact of QoL and diet was a significant predictor of satisfaction and impact of QoL. Exercise and foot care aspects of Self-management were significant predictors of satisfaction and impact of QoL respectively. The final model showed a good fit to the data: RMSEA = .045 (90% CI: .009, .071; Clfit = .601), CFI = .950, SRMR = .058. The findings suggest a theoretical basis to direct the development of appropriate health programs and interventions for improving QoL in people with T2DM and warrant replication in diverse samples.     

Baby face wins? Examining election success based on candidate election bulletin via multilevel modeling

A growing body of research suggests that many voters rely on facial cues from political candidates to elect their leaders. Our study proposes that having a baby face could be an asset for a political candidate in a collectivist culture. Using election bulletin photographs from Taiwan's 2004, 2008 and 2012 legislative election, we look at the extent to which a candidate's baby face is related to election outcomes. Our multilevel modelling includes the number of candidates as Level 1 units, and the number of counties in which the candidates competed as Level 2 units. Vote share is the outcome variable. After considering the candidates' traits (perceived babyfacedness, competence, attractiveness and warmth) and background characteristics, babyfacedness was the strongest predictor of vote share. Results across three elections show consistent patterns: the more babyfaced the candidate, the greater the percentage of votes a candidate received, regardless of the candidate's gender, political affiliation or incumbency status. Babyfacedness is more influential than perceived competence, attractiveness and warmth.     

A simplified version of the maximum information per time unit method in computerized adaptive testing

In this article, we propose a simplified version of the maximum information per time unit method (MIT; Fan, Wang, Chang, & Douglas, Journal of Educational and Behavioral Statistics 37: 655–670, 2012), or MIT-S, for computerized adaptive testing. Unlike the original MIT method, the proposed MIT-S method does not require fitting a response time model to the individual-level response time data. It is also computationally efficient. The performance of the MIT-S method was compared against that of the maximum information (MI) method in terms of measurement precision, testing time saving, and item pool usage under various item response theory (IRT) models. The results indicated that when the underlying IRT model is the two- or three-parameter logistic model, the MIT-S method maintains measurement precision and saves testing time. It performs similarly to the MI method in exposure control; both result in highly skewed item exposure distributions, due to heavy reliance on the highly discriminating items. If the underlying model is the one-parameter logistic (1PL) model, the MIT-S method maintains the measurement precision and saves a considerable amount of testing time. However, its heavy reliance on time-saving items leads to a highly skewed item exposure distribution. This weakness can be ameliorated by using randomesque exposure control, which successfully balances the item pool usage. Overall, the MIT-S method with randomesque exposure control is recommended for achieving better testing efficiency while maintaining measurement precision and balanced item pool usage when the underlying IRT model is 1PL.     

中小学生心理素质双因子结构的构建

尝试构建双因子模型来验证中小学生心理素质结构的理论构想。采用整群抽样法先后两次选取被试,第一次选取重庆、四川、广东各一所小学4-6年级共1607名学生,重庆、四川、湖北、江西、浙江5个省市初一到高三共2106名中学生,第二次选取重庆市潼南区五所小学4-6年级共1334名学生、北碚区两所中学初一到高三共1057名学生,尝试构建中小学生心理素质的双因子结构,同时比较双因子模型与传统维度结构模型拟合中小学生心理素质的优劣。结果表明:相比传统维度结构模型,双因子结构模型拟合数据最优。结论:双因子模型更适用于解释中小学生心理素质的结构。     

Theta band behavioral fluctuations synchronized interpersonally during cooperation

Psychonomic Bulletin & Review - Human behavior fluctuates. A growing body of evidence has demonstrated that behavioral performance in perception fluctuates rhythmically, with dynamics closely...     

Short‐term numerosity training promotes symbolic arithmetic in children with developmental dyscalculia: The mediating role of visual form perception

Studies have shown that numerosity‐based arithmetic training can promote arithmetic learning in typically developing children as well as children with developmental dyscalculia (DD), but the cognitive mechanism underlying this training effect remains unclear. The main aim of the current study was to examine the role of visual form perception in arithmetic improvement through an 8‐day numerosity training for DD children. Eighty DD children were selected from four Chinese primary schools. They were randomly divided into the intervention and control groups. The intervention group received training on an apple‐collecting game, whereas the control group received an English dictation task. Children's cognitive and arithmetic performances were assessed before and after training. The results showed that the intervention group showed a significant improvement in arithmetic performance, approximate number system (ANS) acuity, and visual form perception, but not in spatial processing and sentence comprehension. The control group showed no significant improvement in any cognitive ability. Mediation analysis further showed that training‐related improvement in arithmetic performance was fully mediated by the improvement in visual form perception. The results suggest that short‐term numerosity training enhances the arithmetic performance of DD children by improving their visual form perception.     

Gendered Appearances among Young Children and in the Media: An East-West Cultural Comparison

Sex Roles - Many young children often exhibit a strong desire to wear extremely gender-typed clothing (appearance rigidity), reflecting their emerging gender identities. However, research on...