Brain oscillatory activity associated with task switching and feedback processing

In this study, we sought to dissociate event-related potentials (ERPs) and the oscillatory activity associated with signals indicating feedback about performance (outcome-based behavioral adjustment) and the signals indicating the need to change or maintain a task set (rule-based behavioral adjustment). With this purpose in mind, we noninvasively recorded electroencephalographic signals, using a modified version of the Wisconsin card sorting task, in which feedback processing and task switching could be studied separately. A similar late positive component was observed for the switch and correct feedback signals on the first trials of a series, but feedback-related negativity was observed only for incorrect feedback. Moreover, whereas theta power showed a significant increase after a switch cue and after the first positive feedback of a new series, a selective frontal beta–gamma increase was observed exclusively in the first positive feedback (i.e., after the selection of the new rule). Importantly, for the switch cue, beta–alpha activity was suppressed rather than increased. This clear dissociation between the cue and feedback stimuli in task switching emphasizes the need to accurately study brain oscillatory activity to disentangle the role of different cognitive control processes.     

The Convergence-Divergence Hypothesis

I propose a hypothesis, called the systems convergence-divergence hypothesis, which attempts to explain how the existence and evolution of supraindividual systems (social, political or economic) might be predicted from an analysis of the basic structures that make up their individual entities (molecules and cells) and how, reciprocally, study of these individuals and of their evolution might be approached from knowledge of such systems.     

Parental Illness Encouragement Behavior Among Children with Functional Gastrointestinal Disorders: A Factor Analysis with Implications for Research and Clinical Practice

The objective of the current study was to assess the factor structure of the Illness Behavior Encouragement Scale (IBES) by Walker and Zeman (1992) among children with functional gastrointestinal disorders (FGIDs). Two hundred seventy nine children (63 % female), and 135 primary caregivers (90.8 % mothers), recruited from a large Midwestern children’s hospital completed the IBES, a 12-item measure of parental behavior in response to abdominal pain episodes. Findings suggested the IBES possesses two conceptually distinct scales that are invariant across parent self- and child-report, and are consistent with previous factor analysis in a Dutch sample of children with headaches. Different types of parental behaviors exist that naturally cluster and diverge in reliable ways. Future research is warranted to determine if these different types of parental behavior may differentially influence illness outcomes among children with FGIDs.     

Religiosity and forgiveness among first-married and remarried adults

The current study examined the relationship between religiosity and forgiveness among first-married and remarried adults. Seven hundred and eighty-seven married adults from the Flanders region in Belgium completed the Enright Forgiveness Inventory and a four-item Religiosity Scale measuring forgiveness and religiosity, respectively. The results indicated that religiosity positively correlated (p?=?0.0001, r?=?0.15) with forgiveness. There was a significant difference between the religiosity of the first-married and the remarried adults (p?=?0.0001 (two-tailed) d?=?0.61). In an analysis by gender, the women showed a statistically significantly higher religiosity than did men (p?=?0.00005 (one-tailed) d?=?0.28). Among the demographic variables, age (r?=?0.26), number of children (r?=?0.35), and number of years in marriage (r?=?0.34) showed a statistically significant (p?=?0.0001) positive correlation with religiosity. The basic purpose of this study was to inform clinicians of the value of forgiveness and religiosity in therapeutic interventions.     

The Spurious Correlation of Ratios that Have Common Variables: A Monte Carlo Examination of Pearson's Formula

Pearson (1897) investigated correlations of ratios of bone measurements and found that although the correlations among the original measures were low, the correlations among ratios with common measures were about .5. To understand this result, he developed an approximate equation for the correlations of ratios. In the present study, Monte Carlo methods were used to show that Pearson's equation is fairly accurate and that correlations among ratios with common elements (e.g., X/C, Y/C) are indeed at least partly spurious, as Pearson concluded. This finding should serve as a two-fold warning to those who might correlate ratios that have common elements: (a) Interpretation of the observed relationship between such ratios may at best be tenuous, and (b) the relationships among the elements themselves may call into question the usefulness of addressing a hypothesis that can be tested only with a correlation between ratios that share elements.     

Domains of Sciences,Universes of Discourse and Omega Arguments

Each science has its own domain of investigation, but one and the same science can be formalized in different languages with different universes of discourse. The concept of the domain of a science and the concept of the universe of discourse of a formalization of a science are distinct, although they often coincide in extension. In order to analyse the presuppositions and implications of choices of domain and universe, this article discusses the treatment of omega arguments in three very different formalizations of arithmetic. In Peano's formalization the domain is a restricted class of individuals, while the universe of discourse is the unrestricted class of all individuals. In Gödel's formalization the domain is a restricted class of individuals as in Peano's formalization, but the universe of discourse coincides with the domain. In Whitehead-Russell's formalization the domain is a class of logical notions in Tarski's sense, that are necessarily not individuals, whereas the universe of discourse is the unrestricted class of individuals as in Peano's formalization. The present approach emphasizes the viewpoint that the universe of discourse of a given discourse is important in determining which propositions are expressed by which sentences.     

Interest as a Moderator in the Relationship Between Challenge/Skills Balance and Flow at Work: An Analysis at Within-Individual Level

Considering flow as a non-ergodic process (i.e. non-homogeneous across individuals and non-stationary over time) that happens at the within-individual level, in this research we work with Bakker’s model that propose flow as made up by three components: intrinsic motivation, enjoyment, and absorption. Taking into account that flow theory can be considered as an intrinsic motivation theory, and the recent proposals about the need to distinguish between pre-conditions of flow and the flow experience itself, we look at interest as a moderator between the challenge/skills balance and the experience of flow, rather than a component of the flow experience. A total of 3640 recordings were collected from a sample of 58 workers using an experience sampling method (several registers a day, during 21 working days). The data was analyzed using regression techniques in each participant (i.e. at within-individual level). Our work tries to respond to the following two research questions: Will interest play a moderating role in the relationship between challenge/skills balance and flow? Will a non-linear model (cusp catastrophe model) better explain the relationship among challenge/skills balance, interest, and flow? The results suggest that our hypotheses were correct: including interest as moderator better explains the relationship between challenge/skills balance and flow in comparison to a model without moderation (R² values change from 0.33 to 0.50). Additionally, carrying out the analysis following non-linear techniques explained more variance as well (R² = 0.67), and this increment was significant. These results support the idea that interest should be considered as a key precondition for the appearance of flow, and this relationship is non-linear. We could say that these findings are exemplary in the field and brings up questions for their application in further research.     

Work-Related Flow Dimensions differentially Predict Anxiety,Life Satisfaction,and Work Longevity among Filipino Counselors

Flow at work was associated with optimal psychological outcomes in the organizational setting. However, previous studies have concentrated on work-related flow as an outcome rather than a catalyst of positive psychological functioning. Further, the differential impact of work-related flow domains on key outcomes was still uncharted. To address this empirical gap, the current investigation examined work-related flow dimensions as differential predictors of anxiety, life satisfaction, and work longevity among 133 Filipino guidance counselors. The results of hierarchical regression analyses have shown that work enjoyment served as a robust predictor of anxiety, life satisfaction and work longevity even after controlling for the influence of relevant demographic variables. Absorption positively predicted work longevity. However, intrinsic work motivation did not predict any outcome. Discussion points revolved around the unique theoretical contributions of the current study to the foregoing work-related flow theory and concrete practical implications to emphasize the psychological benefits of work-flow especially in the field of counseling.