Grasping remaps the distribution of visuospatial attention and enhances competing action activation

We examined how action goals influence the distribution of visuospatial attention near the body (Experiment 1) and how the temporal relationship between distractors and targets modifies shifts in visuospatial attention (Experiment 2). Targets were light emitting diodes (LEDs) in the left and right hemispace of a visual display. Following left or right target illumination, participants reached to point-to or grasp target object in blocked trials. Coincident with target onset, a distractor LED illuminated in the same or opposite hemispace between the initiation point and target, or no distractor appeared. In Experiment 1, during grasping there was a larger temporal interference effect (slower reach initiation) than with pointing. When grasping versus pointing, participants deviated more towards same-side distractors and away from opposite-side distractors. In Experiment 2, distractors onset 200ms prior to (?200-ms), coincident with (0 ms), or 200ms following (+200 ms) the target. For both reach types, ?200-ms distractors had greater onset temporal interference than 0 ms and +200-ms distractors. For grasping, +200 ms distractors had larger temporal interference than 0 ms distractors. For ?200-ms, reach trajectories deviated more towards opposite-side distractors and away from same-side distractors, the reverse of the pattern for 0 ms and +200-ms distractors.     

Standard and Short RoM Isokinetic Testing: Comparative Analysis in Identifying Submaximal Shoulder External Rotator Effort

An isokinetic-related parameter termed the difference between eccentric-concentric strength ratios at two distinct test velocities (DEC) based on 60° (standard) range of motion (RoM) has been proven to be highly efficient detecting feigned muscular efforts. This study aimed to verify whether a DEC derived from a much shorter test RoM (20°) was equally useful than a long RoM–derived one. Eighteen healthy men (32.4 ± 6.4 years old) took part in a study focusing on shoulder external rotation isokinetic strength. Participants performed a genuine shoulder external rotator maximal effort (eight pairs of concentric and eccentric contractions at high and low velocities at short and long RoM) and then instructed to feign maximal effort. Contraction velocities were adjusted accordingly by applying a 1:4 gradient and peak moments registered. Both condition DEC was then calculated by subtracting the eccentric and concentric strength ratios at low velocities from those at high velocities. DEC scores in the feigned effort were significantly higher than maximal effort ones in both conditions in men. It enabled the setting of specific cutoff levels for separating the efforts. Both approaches revealed a coincident sensitivity (78%) whereas short RoM showed an even higher specificity: 88% versus 78%. Thus, the short RoM protocol provides clinically acceptable detection power.     

Agent causation as a solution to the problem of action

My primary aim is to defend a nonreductive solution to the problem of action. I argue that when you are performing an overt bodily action, you are playing an irreducible causal role in bringing about, sustaining, and controlling the movements of your body, a causal role best understood as an instance of agent causation. Thus, the solution that I defend employs a notion of agent causation, though emphatically not in defence of an account of free will, as most theories of agent causation are. Rather, I argue that the notion of agent causation introduced here best explains how it is that you are making your body move during an action, thereby providing a satisfactory solution to the problem of action.     

IMPACT OF JOINT ATTENTION ON SOCIAL‐COMMUNICATION SKILLS IN INTERNATIONALLY ADOPTED CHILDREN

Internationally adopted (IA) children have often experienced early adversity and are at risk for long‐term deficiencies in multiple developmental domains. This study examined the association between IA children's joint attention (JA) soon after arrival and later cognitive, communicative, and socioemotional competency 6 months’ postadoption. We expected a child's initial JA would positively predict later cognitive, communication, and social ability. IA children (n = 63) adopted from Eastern Europe were seen soon after their arrival into the United States to assess their JA. Their socioemotional competency, social communication, and cognitive abilities were measured at a follow‐up session 6 months’ postadoption. We found that higher order JA was positively associated with measures of social relatedness. Furthermore, individual hierarchical regressions of each measure of JA (higher order JA, initiating JA, responding to JA, and initiating behavior requests [BR]) considered with age‐at‐adoption showed that each measure was an independent and positive predictor of Mullen outcomes in the receptive and expressive language domains. These results suggest that JA may be a sensitive predictor of subsequent functioning in the social, communicative, and cognitive domains. Thus, assessing JA soon after arrival has the potential to identify at‐risk IA children, and interventions targeting JA may support those children in overcoming the negative impacts of early adversity.     

Polarized Opinions on Racial Progress and Inequality: Measurement and Application to Affirmative Action Preferences

This study presents new measures of opinion about progress toward racial equality and provides a multifaceted rationale for preferring the new measures to the old ones. To reduce several sources of measurement error and improve analytic bite by breaking progress into its constituent elements, surveys should ask about past, present, and ideal conditions, not “progress.” These questions reveal racially polarized opinions: Black and White Americans agree on the goal of equality and agree that conditions were worse in the past, but Blacks think conditions were much worse than Whites do. They especially differ in opinions on current conditions and thus in how much change is required to achieve the goal of equality. Blacks see much more current inequality than Whites do. These opinions help explain preferences for affirmative action (AA). Contrary to previously published findings, reactions to AA do not depend on opinions on progress but depend strongly on something related but distinct: how much current racial conditions differ from the ideal. Implications for theories of policy preferences, racial attitudes, progress, and equality are discussed.     

Political Action in Conflict and Nonconflict Regions in Indonesia: The Role of Religious and National Identifications

This study examined the relationship between group identification and political action in Indonesia. We made four contributions to the literature. First, we studied political action on behalf of religious groups and examined the role of religious identification alone and in combination with national identification. Second, we analyzed political action in a non‐Western country where social cleavages occur primarily along religious lines and where a conflict and nonconflict region can be studied. Third, we compared Muslims and Christians, whose majority and minority status varies across the two regions, and fourth, we investigated both normative and nonnormative forms of political action (protest and violence). In line with the dual‐identification model of politicization, we found that religious identification increased support for protest (but not violence) in the conflict region only and particularly among high national identifiers. In the nonconflict region, religious identification was not related to violence, and it was related to lower support for protest among high national identifiers. The patterns were largely similar for Muslims and Christians, but some differences were found depending on the majority‐minority status. We conclude that particularities of the intergroup context should be taken into consideration when studying politicization.     

Influence of gait mode and body orientation on following a walking avatar

Regulating distance with a moving object or person is a key component of human movement and of skillful interpersonal coordination. The current set of experiments aimed to assess the role of gait mode and body orientation on distance regulation using a cyclical locomotor tracking task in which participants followed a virtual leader. In the first experiment, participants moved in the backward-forward direction while the body orientation of the virtual leader was manipulated (i.e., facing towards, or away from the follower), hence imposing an incongruence in gait mode between leader and follower. Distance regulation was spatially less accurate when followers walked backwards. Additionally, a clear trade-off was found between spatial leader-follower accuracy and temporal synchrony. Any perceptual effects were overshadowed by the effect of one’s gait mode. In the second experiment we examined lateral following. The results suggested that lateral following was also constrained strongly by perceptual information presented by the leader. Together, these findings demonstrated how locomotor tracking depends on gait mode, but also on the body orientation of whoever is being followed.     

Unpleasant stimuli differentially modulate inhibitory processes in an emotional Go/NoGo task: an event-related potential study

Threat stimuli typically elicit a psychophysiological response pattern supporting the organism's preparation for active defence. Differently, blood stimuli prompt a distinctive autonomic response pattern and sustained processing, which do not call for clear-cut mobilisation for action. However, the contribution of motor disposition in these response patterns remains unclear. One way to address this issue is to investigate whether threat and blood stimuli differentially affect the active suppression of an ongoing motor activity. Thirty-two undergraduates were presented with threat, mutilation, pleasant, and neutral pictures in an emotional Go/NoGo task. The amplitudes of the NoGo-N2 and NoGo-P3 components of the event-related potentials were analysed as indices of conflict monitoring and inhibition of motor response, respectively. Reaction times to Go trials were significantly faster for threat than for mutilations. The NoGo-N2 was significantly larger to threat than to mutilations, whereas the NoGo-P3amplitude did not differ between the two conditions. These findings suggest that threat stimuli facilitated the execution of a prepotent response and enhanced conflict monitoring when action must be withheld. In contrast, blood stimuli did not either promote action in the Go trials or increase conflict in the NoGo condition, suggesting a response pattern compatible with defensive immobility.     

CAUSATION,DISPOSITIONS, AND PHYSICAL OCCASIONALISM

Even though theistic philosophers and scientists agree that God created, sustains, and providentially governs the physical universe and even though much has been published in general regarding divine action, what is needed is a fine‐grained, conceptually coherent account of divine action, causation, dispositions, and laws of nature consistent with divine aseity, satisfying the widely recognized adequacy conditions for any account of dispositions.¹ Such an account would be a basic part of a more comprehensive theory of divine action in relation to the fundamental concepts of science and of mathematics. Our aim in this article is simply to present such a theory.     

Action: a bridge between vocational and mental health counselling*

A theory of goal-directed action is proposed as a conceptual link between vocational and mental health counselling. Originally emerging from the vocational counselling field, contextual action theory is presented as a critical conceptual link not only between mental health and occupational life but also between counselling practices in these domains. This specific application of goal-directed action to vocational and mental health counselling is addressed by describing counselling as goal-directed action, the five tasks of counselling it invites, and tools for supporting client goals, such as the self-confrontation interview.