Dissociations in Visual Attention Deficits among Persons with Mild Cognitive Impairment

ABSTRACT

Impairments in visual attention and visual information processing have been identified as part of the neuropsychological features of Alzheimer's disease (AD), even in its earliest stages. There is increasing recognition that these deficits may be selective rather than global, with some attentional subtypes being more vulnerable than others. The few studies that have investigated attentional deficits in mild cognitive impairment (MCI), a putatively prodromal phase of AD, have not satisfactorily addressed the possible selectivity in attentional deficits in MCI. This study examined potential dissociations in visual attention deficits in MCI using a measure that assesses simple, divided, and selective attention. The results indicated a hierarchy of attentional impairments, with divided attention being the most affected and simple attention the least. Among participants with MCI, 53% showed evidence of impairment in divided attention compared to 19% of controls (OR = 4.81, p < .001). Poorer visual attention was also associated with poorer overall cognitive status. The implications of these findings for early identification of MCI, prevention of functional decline in MCI, and delay/reversal of cognitive degradation in MCI are discussed.     

The relationship of entrepreneurial traits, skill, and motivation to subsequent venture growth

Previous research on entrepreneurship as well as goal, social-cognitive, and leadership theories has guided hypotheses regarding the relationship between entrepreneurial traits and skill (passion, tenacity, and new resource skill) and situationally specific motivation (communicated vision, self-efficacy, and goals) to subsequent venture growth. Data from 229 entrepreneur-chief executive officers and 106 associates in a single industry were obtained in a 6-year longitudinal study. Structural equation modeling revealed a web of relationships that impact venture growth. Goals, self-efficacy, and communicated vision had direct effects on venture growth, and these factors mediated the effects of passion, tenacity, and new resource skill on subsequent growth. Furthermore, communicated vision and self-efficacy were related to goals, and tenacity was related to new resource skill.     

Self-rated emotional health in adults with and without HIV

Affect is an important indicator of quality of life; unfortunately, many people with Human Immunodeficiency Virus (HIV) disease are vulnerable to depression and negative affect. In a secondary data analysis, 50 HIV-positive and 50 HIV-negative adults between 30 and 65 years old completed several affective measures and rated their emotional health. The HIV-positive adults reported more negative affect than the HIV-negative adults. Older age, loneliness, and HIV stigma were associated with such negative affect.     

The regulation of explicit and implicit race bias: the role of motivations to respond without prejudice

Three studies examined the moderating role of motivations to respond without prejudice (e.g., internal and external) in expressions of explicit and implicit race bias. In all studies, participants reported their explicit attitudes toward Blacks. Implicit measures consisted of a sequential priming task (Study 1) and the Implicit Association Test (Studies 2 and 3). Study 3 used a cognitive busyness manipulation to preclude effects of controlled processing on implicit responses. In each study, explicit race bias was moderated by internal motivation to respond without prejudice, whereas implicit race bias was moderated by the interaction of internal and external motivation to respond without prejudice. Specifically, high internal, low external participants exhibited lower levels of implicit race bias than did all other participants. Implications for the development of effective self-regulation of race bias are discussed.     

Goal-directedness and personal identity as correlates of life outcomes

Although much research has been conducted on goal setting, researchers have not examined goal-directedness or propensity to set goals as a stable human characteristic in adults. In this study, a survey was developed and distributed to 104 adult participants to assess their goal-directedness, personal identity, and various life outcomes. A theoretical model was developed and tested using structural equation modeling that proposed that both goal-directedness and personal identity should positivcly influence important life outcomes. Analysis showed that goal-directedness and personal identity are positively related to personal well-being, salary, and marital satisfaction. Further, personal identity was positively related to job satisfaction but, contrary to related research, goal-directedness did not predict job satisfaction.     

Building a practically useful theory of goal setting and task motivation. A 35-year odyssey

The authors summarize 35 years of empirical research on goal-setting theory. They describe the core findings of the theory, the mechanisms by which goals operate, moderators of goal effects, the relation of goals and satisfaction, and the role of goals as mediators of incentives. The external validity and practical significance of goal-setting theory are explained, and new directions in goal-setting research are discussed. The relationships of goal setting to other theories are described as are the theory's limitations.     

Connecting the horizontal dimension of social comparison with self-worth and self-confidence

Multilevel modeling of undergraduates (N = 229) event-contingent records of naturalistic social comparison experiences revealed distinct correlates of the horizontal (similar-different) dimension and vertical (better-worse) dimension of comparisons. Complementing past studies showing associations between the horizontal dimension and communal dispositions and experiences, the current study showed that the horizontal dimension also is associated with agentic dispositions and experiences such as self-worth and self-confidence. For example, participants perceived more similarity when comparing with targets' desirable attributes than with targets' undesirable attributes and perceiving similarities with desirable target attributes (and dissimilarities with undesirable target attributes) enhanced their self-confidence. Participants higher in self-worth (high in self-esteem and low in depression) were more discriminating in their experiences of similarity and connection; specifically, they reported more similarity and connection when targets' attributes were desirable but less connection the more targets' attributes were inferior to their own.     

Anatomical correlates of normal and impaired language in a set of dizygotic twins

This report presents findings for a set of dizygotic twins at age 4 years 9 months. The male was diagnosed as specifically language impaired. For both children, the left-right perisylvian configuration was atypical. Only the male's configuration was symmetrical, a finding in line with autopsy data reported for subjects with "developmental dyslexia" who also may have had a form of language impairment. In addition, the male had an atypical (L greater than R) configuration of the cerebral hemispheres, a finding not seen in his twin, or in a series of volunteers without a history of developmental language impairment. The in utero effects of gonadal hormones that may account for these findings are discussed.     

Satisfaction in interpersonal interactions as a function of similarity in level of dysphoria

This study compared dysphoric and nondysphoric male and female undergraduates as they conversed with dysphoric or nondysphoric undergraduates of the same sex. Subjects rated their satisfaction with the conversation after each turn. The results showed that people in homogeneous dyads (i.e., both partners were dysphoric or both partners were nondysphoric) were more satisfied with the interaction, and their satisfaction increased as the conversation proceeded. People in mixed dyads were less satisfied, perceived each other as colder, and spoke about increasingly negative topics. Thus, in accord with other research showing that similarity leads to liking, the crucial determinant of interactional satisfaction was neither the mood of the subject nor the mood of the partner, but their similarity in mood.