Caffeine does not modulate inhibitory control

The effects of a 3mg/kg body weight (BW) dose of caffeine were assessed on behavioral indices of response inhibition. To meet these aims, we selected a modified AX version of the Continuous Performance Test (CPT), the stop task, and the flanker task. In three double-blind, placebo-controlled, within-subjects experiments, these tasks were administered to healthy participants. While the results for the AX-CPT were indicative of improved response inhibition after caffeine, they might also reflect caffeine-induced changes in mechanisms other than response inhibition (e.g., attentional processes). The results for the stop task and flanker task were more straightforward. That is, the effects of caffeine on overall flanker performance and selective response suppression as revealed by distribution-analytical techniques were negligible. In the stop task a global effect of caffeine on processing speed was seen, rather than specific effects on response inhibition. Taken together, these experiments showed that both active and reactive inhibition were not significantly modulated by caffeine. The present results are linked to neural circuits that underlie inhibitory control and the role of caffeine-induced strategic changes.     

THEOLOGICAL METHODOLOGY,CLASSICAL THEISM,AND “LIVED TIME” IN ANTJE JACKELÉN'S TIME AND ETERNITY

Antje Jackelén's Time and Eternity successfully employs the method of correlation and a close study of the question of time to enter the dialogue between science and theology. Hermeneutical attention to language is a central element of this dialogue, but we must be aware that much science is untranslatable into ordinary language; it is when we get to the bigger metaphysical assumptions of science that true dialogue begins to happen. Thus, although the method of correlation is a useful way to approach this dialogue, there is not a strict equivalence in this relationship. Theology needs science more than science needs theology. In speaking of time and God we must keep in mind the relational nature of classical Christian theism, even in its most austere forms. We should not read Enlightenment ideas of God back into the classical Christian tradition or neglect the apophatic emphasis in Christian theism, which warned against assuming knowledge of the divine nature. God's relation to time always lies beyond our understanding. Studying the effects of either the Newtonian or Einsteinian concepts of time on our theological concepts should not detract our attention from the “lived time” that characterizes human experience. Consideration of the notion of time in the Madhyamaka Buddhist tradition reminds us that we cannot control the inner reality of time and that for humans time is something to be considered pragmatically.     

TIME AND ETERNITY: HYMNIC,BIBLICAL, SCIENTIFIC,AND THEOLOGICAL VIEWS

The book Time and Eternity, the English version of Zeit und Ewigkeit, by Antje Jackelén, contains scientific and theological treatments of these two topics, starting with the usage of such ideas in German, Swedish, and English hymns. This essay describes her work and explains how the scientific ideas provide a coherent framework for understanding the place of time.     

The Construct Validity of the Utrecht Work Engagement Scale: Multisample and Longitudinal Evidence

This study investigated the factor structure and factorial group and time invariance of the 17-item and 9-item versions of the Utrecht Work Engagement Scale (UWES; Schaufeli et al. (2002b) Journal of Happiness Studies 3:71–92). Furthermore, the study explored the rank-order stability of work engagement. The data were drawn from five different studies (N = 9,404), including a three-year longitudinal study (n = 2,555), utilizing five divergent occupational samples. Confirmatory factor analysis supported the hypothesized correlated three-factor structure—vigor, dedication, absorption—of both UWES scales. However, while the structure of the UWES-17 did not remain the same across the samples and time, the structure of the UWES-9 remained relatively unchanged. Thus, the UWES-9 has good construct validity and use of the 9-item version can be recommended in future research. Moreover, as hypothesized, Structural Equation Modeling showed high rank-order stabilities for the work engagement factors (between 0.82 and 0.86). Accordingly, work engagement seems to be a highly stable indicator of occupational well-being.     

Temporal links to performing under pressure in international soccer penalty shootouts

ObjectivesThis study examined the temporal characteristics of performing under pressure in a high-stakes real-world sport situation.DesignBehavior observation analyses were conducted of televised soccer games.MethodsVideos were obtained from all penalty shootouts ever held in three major international soccer tournaments (World Cup, European Championships, and UEFA Champions League). In these events, 296 players performed 366 penalty kicks. The time periods that were analyzed in relation to shot outcomes were: walking, ball placement, back-up, signal waiting, signal response, and run-up.ResultsSeveral time intervals were linked to performance. For example, longer times to respond to the referee's ready signal were related to more goals and shorter times were related to more misses. A similar weak trend was found for ball placement. Time to wait for the referee signal went in the other direction, with shorter times giving more goals.ConclusionsShorter self-imposed times were linked to worse performance than longer times. Plausible reasons for this result may be the extreme levels of pressure that are induced by major penalty shootouts, causing performers to attempt escaping the emotional distress by getting the situation “over with” as soon as possible. These results are consistent with a model of choking as a case of self-regulatory breakdown.     

The Tense Logic for Master Argument in Prior’s Reconstruction

In this paper we examine Prior’s reconstruction of Master Argument [4] in some modal-tense logic. This logic consists of a purely tense part and Diodorean definitions of modal alethic operators. Next we study this tense logic in the pure tense language. It is the logic K _t 4 plus a new axiom (P): ‘p Λ G p ⊃ P G p’. This formula was used by Prior in his original analysis of Master Argument. (P) is usually added as an extra axiom to an axiomatization of the logic of linear time. In that case the set of moments is a total order and must be left-discrete without the least moment. However, the logic of Master Argument does not require linear time. We show what properties of the set of moments are exactly forced by (P) in the reconstruction of Prior. We make also some philosophical remarks on the analyzed reconstruction. Presented by Jacek Malinowski     

Usage-based account of the acquisition of liaison: evidence from sensitivity to the singular/plural orientation of nouns

This study investigates whether children’s production and recognition of obligatory liaison sequences in French depend on the singular/plural orientation of nouns. Certain nouns occur more frequently in the plural (e.g., arbre “tree”), whereas others are found more often in the singular (e.g., arc-en-ciel “rainbow”). In the input, children more frequently encounter these plural-oriented nouns after determiners that indicate plurality (e.g., les,des “the”, deux “two”) and that are often associated with a /z/ liaison (e.g., deux arbres [døzarbr] “two trees”). In Experiment 1, 122 children (3 years 2 months to 6 years 3 months of age) were asked to produce nominal phrases with either /z/ liaisons (i.e., in plural contexts such as deux ours [døzurs] “two bears”) or /n/ liaisons (i.e., in singular contexts such as un ours [nurs] “one bear”). We found correlations between the plural orientation of the nouns and (a) the probability that they will be preceded by an incorrect /z/ liaison in the singular context and (b) the probability that they will be preceded by a correct /z/ liaison in the plural context. This result was, however, restricted to the younger children. In Experiment 2, 20 children (5 years 5 months to 6 years 3 months of age) were asked to monitor target words in auditorily presented sentences. The results showed shorter reaction times for singular-oriented nouns when preceded by a singular determiner than when preceded by a plural determiner. Conversely, plural-oriented nouns were responded to faster when preceded by a plural determiner than when preceded by a singular determiner. Results are discussed within the framework of a two-stage model of liaison acquisition recently proposed by Chevrot, Chabanal, and Dugua (Journal of French Language Studies,17 [2007] 103-128) as well as by Chevrot, Dugua, and Fayol (Journal of Child Language [in press]).     

The development and coherence of future-oriented behaviors during the preschool years

Although previous research has identified a number of interesting aspects of future thinking in adults, little is known about the developmental trajectory and coherence of future-oriented behaviors during early childhood. The primary goal of this study was to explore these issues by administering a battery of tasks assessing different aspects of future thinking, including mental time travel, delay of gratification, planning, and prospective memory, to 72 preschoolers. Results revealed that performance on all of the tasks increased significantly between 3 and 5 years of age. Although most tasks were correlated, suggesting “behavioral” coherence, many of these significant correlations dropped out once age and receptive vocabulary were controlled. These results are discussed with respect to theories about, and measurement of, future orientation.     

Comparing the effects of varied and constant preferred items on improving tummy time for typically developing infants

Tummy time involves placing an infant in a prone position to help build muscle strength. Pediatricians recommend tummy time because it helps with infant development related to milestones such as crawling, rolling over, and sitting up. However, parents sometimes avoid tummy time due to whining or crying when the infant is placed in the prone position. The current study compared two interventions incorporating preferred leisure items (i.e., varied or constant) for five typically developing infants to increase head elevation and decrease negative vocalizations during tummy time. Improvements occurred in infant performance regardless of the preferred items used. In addition, the mothers who implemented the tummy time procedures found the treatment to be socially valid and were more likely to select the use of the constant item when given the opportunity to choose.     

Community-Engaged Neighborhood Revitalization and Empowerment: Busy Streets Theory in Action

Busy streets theory predicts that engaging residents in physical revitalization of neighborhoods will facilitate community empowerment through the development of sense of community, social cohesion, collective efficacy, social capital, and behavioral action. Establishing safe environments fosters positive street activity, which reinforces neighborhood social relationships. A community-engaged approach to crime prevention through environmental design (CE-CPTED) is one promising approach to creating busy streets because it engages residents in collaborative interactions to promote safer environments. Yet, few researchers have studied how CE-CPTED may be associated with busy streets. We interviewed 18 residents and stakeholders implementing CE-CPTED in Flint, Michigan. We studied three neighborhoods with different levels of resident control over CE-CPTED. Participants described how CE-CPTED implementation affected their neighborhood. Participants from all three neighborhoods reported that CE-CPTED was associated with positive street activity, sense of community, and collective efficacy. Participants from neighborhoods with higher resident control of CE-CPTED reported more social capital and behavioral action than those from neighborhoods with less resident control. Our findings support busy streets theory: Community engagement in neighborhood improvement enhanced community empowerment. CE-CPTED that combines physical revitalization with resident engagement and control creates a potent synergy for promoting safe and healthy neighborhoods.