Model and interactive algorithm of bi‐level multi‐objective decision‐making with multiple interconnected decision makers

Furthering a prior research on two‐person bi‐level multi‐objective decision‐making problems of the leader‐follower Stackelberg game, we present an extended model of bi‐level multi‐objective decision‐making with multiple interconnected decision makers at the lower level. In the model, the upper level decision maker acts as a leader and the lower level decision makers behave as the followers, and inter‐connections and interactions exist among these followers in decision‐making scenarios. Following the rules of leader‐follower Stackelberg game, we develop an interactive algorithm of the model for solving multi‐objective decision‐making problems and reflecting the interactive natures among the decision makers. Finally, the authors exemplify the model and algorithm, and draw a conclusion on points of contributions and the significance of this study in decision‐making and support. Copyright © 2001 John Wiley & Sons, Ltd.     

A model for personality at three levels

People differ. How and why they differ are the fundamental questions for personality psychologists. In this article we address three levels at which people differ: within individuals, between individuals, and between groups of individuals. A dynamic model of personality is considered where traits are seen as rates of change in states in response to environmental cues. Within individuals, motivational and behavioral states show inertial properties and lead to an analysis of rates of change and latencies of behavior. Between individuals, the analysis is one of frequency and duration of choices. When individuals self select into groups reflecting shared interests and abilities, the structure of these group differences reflects the consequences of the self selection. Examples of the dynamic model are given for each level of analysis.     

成人注意缺陷多动障碍在内外源冲突时的表现:眼动的证据

在注意定向与维持上,注意缺陷多动障碍(ADHD)个体更容易受到外部刺激的干扰而导致目标任务加工进程受阻,表现出了注意定向反应的缺陷,但导致任务失败的原因是由于对突然出现的外部无关刺激的过度兴奋还是对内源性目标刺激的持续维持能力减弱,尚不清楚。研究采用反向眼跳范式、记忆导向眼跳范式和视觉导向眼跳范式,来探索成人ADHD内外源注意定向反应的情况,以及当二者发生冲突时,成人ADHD失败的可能机制。结果发现,在反向眼跳任务上,成人注意缺陷多动障碍组错误率更高,并且差异性显著。但在记忆导向眼跳任务中,成人注意缺陷多动障碍组与正常组的差异不显著。在视觉导向眼跳任务中,成人注意缺陷多动障碍组的正确眼跳潜伏期比正常组要短,且二者之间的差异显著。这说明,在内外源刺激反应的冲突导致的情境中,成人注意缺陷多动障碍的反应明显落后于正常个体,这种缺陷并非由于其维持内源性注意产生定向反应落后所导致的,而是与其外源注意定向反应过强有关。     

Prosocial behavior is related to later executive function during early childhood: A longitudinal study

ABSTRACT

Previous research has shown that executive function is correlated with prosocial behavior during early childhood. Whether early prosocial behaviors were associated with later executive function during preschool years or vice versa was thus examined in a longitudinal design. The prosocial behaviors and executive function of children (N = 64) aged 42 to 65 months were evaluated twice (Times 1 and 2), based on teachers’ reports and children’s performance on hot and cool executive function tasks. Results revealed that prosocial behaviors at Time 1 were associated with later hot executive function at Time 2, but executive function at Time 1 was not related to prosocial behaviors at Time 2. These findings suggest that prosocial behaviors may enhance children’s hot executive function.     

Executive functions in early childhood: The role of maternal and paternal parenting practices

We investigated the association between mothers' and fathers' harsh parenting and sensitive parenting practices and child's executive functions (EF) in early childhood in 607 families. We focused on three broad dimensions of child EF: Emergent metacognition, inhibitory self‐control, and flexibility measured with the parent‐reported Behavior Rating Inventory of Executive Function‐Preschool Version. Less sensitive parenting of the mother and harsher parenting of the father were related to lower scores of emergent metacognition and inhibitory self‐control. Parenting was not associated with child flexibility. This study extends previous research on the association between parenting and EF by the focus on the role of the father and demonstrates independent effects of mother and father on child EF.     

The detrimental effect of academic procrastination on subsequent grades: the mediating role of coping over and above past achievement and working memory capacity

Background: Academic procrastination is common among university students and its effect on their achievement is worrisome. Although procrastination is often depicted as self-regulation failure, research still needs to examine the self-regulatory mechanisms involved in the relationship between procrastination and achievement.

Objectives: In this prospective study, we sought to (a) unravel the unique effect of academic procrastination on university grades, (b) examine the mediating role of task-oriented and disengagement-oriented coping as a self-regulatory pathway toward achievement, (c) control for the potential confounding influence of past achievement and working memory capacity.

Methods: A sample of 258 university students completed self-report measures of academic procrastination and coping, and performed tests of working memory. Their semester grade point average was collected at the end of the semester.

Results: Results of structural equation modeling showed that academic procrastination negatively predicted subsequent academic achievement, even after controlling for high school achievement and working memory capacity. Furthermore, indirect effects revealed that task- and disengagement-oriented coping explained 70% of the total effect.

Conclusion: These findings outline that the effect of academic procrastination cannot be reduced to a history of academic difficulties or limited cognitive ability and that coping plays an important role in the procrastination – achievement relationship.     

From terrible twos to sassy sixes: The development of vocabulary and executive functioning across early childhood

Across the early childhood period of development, young children exhibit considerable growth in their executive functioning (EF) and vocabulary abilities. Understanding the developmental trajectory of these seemingly interrelated processes is important as both early vocabulary and EF have been shown to predict critical academic and socio-emotional outcomes later in childhood. Although previous research suggests that EF and vocabulary are correlated in early childhood, much of the existing longitudinal research has focused on unidirectional relations among preschool child samples. The current large-scale study, therefore, sought to examine whether children's vocabulary and EF abilities are bidirectionally related over time across four measurement waves in early childhood (i.e., at ages 2, 3, 4, and 6). At each timepoint, children's vocabulary skills were positively correlated with their concurrent EF abilities. After controlling for child sex and maternal education status, the best-fitting, cross-lagged panel model was a unidirectional model whereby children's early vocabulary scores predicted their later EF performance at each timepoint. Although age 2 EF significantly predicted age 3 vocabulary size, this association was no longer significant after accounting for maternal education status. Our results illustrate that vocabulary size plays an important role in predicting children's later EF performance across various timepoints in early childhood, even after controlling for children's initial EF scores. These findings have important implications for intervention research as fostering early vocabulary acquisition may serve as a possible avenue for improving EF outcomes in young children.

Research Highlights

• Children's vocabulary size is positively correlated with their concurrent executive functioning skill at ages 2, 3, 4, and 6
• Young children's early vocabulary scores predict their later EF performance across measurement waves, even after controlling for initial EF skill
• There is stability in children's relative vocabulary size and executive functioning performance over time in early childhood