Category-selective attention modulates unconscious processes in the middle occipital gyrus

Many studies have revealed the top-down modulation (spatial attention, attentional load, etc.) on unconscious processing. However, there is little research about how category-selective attention could modulate the unconscious processing. In the present study, using functional magnetic resonance imaging (fMRI), the results showed that category-selective attention modulated unconscious face/tool processing in the middle occipital gyrus (MOG). Interestingly, MOG effects were of opposed direction for face and tool processes. During unconscious face processing, activation in MOG decreased under the face-selective attention compared with tool-selective attention. This result was in line with the predictive coding theory. During unconscious tool processing, however, activation in MOG increased under the tool-selective attention compared with face-selective attention. The different effects might be ascribed to an interaction between top-down category-selective processes and bottom-up processes in the partial awareness level as proposed by Kouider, De Gardelle, Sackur, and Dupoux (2010). Specifically, we suppose an “excessive activation” hypothesis.     

Faculty in Faith-Based Institutions: Participation in Decision-Making and Its Impact on Job Satisfaction

This study examined full-time faculty in Christian, faith-based colleges and universities and investigated the type of impact their participation in the decision-making process had on job satisfaction. Previous studies have examined relationships among faculty at state universities and community colleges, yet little research has been examined in the area of full-time faculty at faith-based universities. This study sampled 145 full-time faculties at faith-based universities and examined the demographic variables of gender, age, years of teaching experience, degree, rank and salary groups, and participation. Regression analysis indicated that there were no significant relationships, while t-tests and analysis of variance (ANOVA) revealed no significant differences. Discussion of the findings focused on possible reasons these findings differ from those in studies investigating public colleges and universities.     

The Dimensionality and Well-being Related Correlates of Work Locus of Control

Abstract

Theoretical and empirical developments with the locus of control construct demonstrate that it is a context-specific multidimensional construct that has implications for stress and well-being. In this paper, the multidimensionality of work-specific locus of control is explored by subjecting Spector's work locus of control scale to principal components analysis. Using samples of 221 university staff and 399 accountants, a two-dimensional structure was uncovered; external agents control and personal control. Correlations with constructs that have been theoretically and empirically associated with locus of control indicate slightly divergent results for the two dimensions, thus demonstrating the importance of treating locus of control as a domain-specific multidimensional construct. In addition, test-retest data with a subsample of 246 accountants suggested that work locus of control may be thought of as a state rather than trait measure.     

Propagation of innovations in networked groups

A novel paradigm was developed to study the behavior of groups of networked people searching a problem space. The authors examined how different network structures affect the propagation of information in laboratory-created groups. Participants made numerical guesses and received scores that were also made available to their neighbors in the network. The networks were compared on speed of discovery and convergence on the optimal solution. One experiment showed that individuals within a group tend to converge on similar solutions even when there is an equally valid alternative solution. Two additional studies demonstrated that the optimal network structure depends on the problem space being explored, with networks that incorporate spatially based cliques having an advantage for problems that benefit from broad exploration, and networks with greater long-range connectivity having an advantage for problems requiring less exploration. (PsycINFO Database Record (c) 2008 APA, all rights reserved).     

Priming students for whole-class interaction: using interdependence to support behavioral engagement

Student interaction at a whole-class level is tied to learning outcomes, but encouraging students to engage with their peers at a whole-class level is difficult. While little research has sought to promote student engagement with one another at this level, one factor that has been shown to increase student interaction in pairs and small groups is student–student interdependency. Yet, to date, no studies have attempted to examine the impact of prior interdependency at this smaller scale on students’ interactions as a whole-class. The current study tested this relationship in an undergraduate class learning science content (n?=?19) through structuring interdependency (task and resource) during science learning. Students completed six science learning sessions each of which included a science learning activity followed by a whole-class concept mapping task. Students were audio and video recorded during the whole-class task, and then individual student behavior was coded in 10 s intervals during the first 10 min of each session. Generalized regression results showed that adding small group interdependency during learning predicted significantly more student science discussion (R²?=?.05) and supportive interactions (R²?=?.16), while predicting decreased expressions of science misunderstanding (R²?=?.07) during the whole-class task. Additionally, the combination of task and resource interdependency predicted a further decrease in student expressions of misunderstanding (R²?=?.07), but also increased student social distraction in comparison to task interdependency alone (R²?=?.28). Together these findings suggest that prior interdependency can be leveraged to increase student behavioral engagement at the whole-class level.     

Emotion dysregulation and functional connectivity in children with and without a history of major depressive disorder

Recent interest has emerged in understanding the neural mechanisms by which deficits in emotion regulation (ER) early in development may relate to later depression. Corticolimbic alterations reported in emotion dysregulation and depression may be one possible link. We examined the relationships between emotion dysregulation in school age, corticolimbic resting-state functional connectivity (rs-FC) in preadolescence, and depressive symptoms in adolescence. Participants were 143 children from a longitudinal preschool onset depression study who completed the Children Sadness Management Scale (CSMS; measuring ER), Child Depression Inventory (CDI-C; measuring depressive symptoms), and two resting-state MRI scans. Rs-FC between four primary regions of interest (ROIs; bilateral dorsolateral prefrontal cortex [dlPFC] and amygdala) and six target ROIs thought to contribute to ER were examined. Findings showed that ER in school age did not predict depressive symptoms in adolescence, but did predict preadolescent increases in dlPFC-insula and dlPFC-ventromedial PFC rs-FC across diagnosis, as well as increased dlPFC-dorsal anterior cingulate cortex (dACC) rs-FC in children with a history of depression. Of these profiles, only dlPFC-dACC rs-FC in preadolescence predicted depressive symptoms in adolescence. However, dlPFC-dACC connectivity did not mediate the relationship between ER in school age and depressive symptoms in adolescence. Despite the absence of a direct relationship between ER and depressive symptoms and no significant rs-FC mediation, the rs-FC profiles predicted by ER are consistent with the hypothesis that emotion dysregulation is associated with abnormalities in top-down control functions. The extent to which these relationships might confer greater risk for later depression, however, remains unclear.