Attentional control has been conceptualized as executive functioning by neuropsychologists and as working memory capacity by experimental psychologists. We examined the relationship between these constructs using a factor analytic approach in an adult life span sample. Several tests of working memory capacity and executive function were administered to more than 200 subjects between 18 and 90 y...

this study attempts to investigate the impacts of severalcorporate governance mechanisms on two alternative proxies for agencycosts, namely the ratio of total sales to total assets (asset turnover) and theratio of selling, general and administrative expenses to total sales(sg&a;). agency costs, non-executive directors on the board, andinstitutional investors are dependent variables. the analysi...

Catechol-O-methyltransferease (COMT) metabolizes prefrontal cortex dopamine (DA), a neurotransmitter involved in executive behavior; the Val158Met genotype has been linked to executive dysfunction, which might increase sexual risk behaviors favoring HIV transmission. Main and interaction effects of COMT genotype and executive functioning on sexual risk behavior were examined. 192 sexually activ...

Performance Effects of Appointing Other Firms’ Executive Directors to Corporate Boards: An Analysis of UK Firms This paper studies the effect on company performance of appointing non-executive directors that are also executive directors in other firms. The analysis is based on a new panel dataset of UK companies over 2002-2008. Our findings suggest a positive relationship between the presence o...

To be successful takes creativity, flexibility, self-control, and discipline. Central to all those are executive functions, including mentally playing with ideas, giving a considered rather than an impulsive response, and staying focused. Diverse activities have been shown to improve children's executive functions: computerized training, noncomputerized games, aerobics, martial arts, yoga, mind...

Executive-control processes regulate thoughts, emotions, actions, and behaviors that are critical for everyday functioning. Recently, researchers have suggested that these processes can be flexibly modified by tasks that require executive control. Specifically, it has been argued that executive-control tasks can deplete these executive-control processes, which can in turn lead to negative trans...

The structure of executive function (EF) has been the focus of much debate for decades. What is more, the complexity and diversity provided by the developmental period only adds to this contention. The development of executive function plays an integral part in the expression of children's behavioral, cognitive, social, and emotional capabilities. Understanding how these processes are construct...

introduction executive function define as ability to maintain a suitable and gool directed condition for problem solving. the results of previous studies on tourette syndrome (ts) were contradiction, but the impairment of visual-spatial performance, working memory and reaction time were shown. in children with attention defiat hyperactivity disorder (adhd) impairment of set shifting, motor inhi...

Young children have long been known to act selfishly and gradually appear to become more generous across middle childhood. While this apparent change has been well documented, the underlying mechanisms supporting this remain unclear. The current study examined the role of early theory of mind and executive functioning in facilitating sharing in a large sample (N = 98) of preschoolers. Results r...

Research suggests that high levels of interpersonal power can promote enhanced executive functioning capabilities. The present work explored whether this effect is contingent upon expectancies concerning power's downstream cognitive consequences. Study 1 showed that social dominance orientation (SDO) predicted idiosyncratic expectancies of mental energy change toward interpersonal power. Study ...