Mental and Motor Switching in Parkinson's Disease

Switching difficulties in Parkinson's disease (PD) are expressed in both mental and motor tasks. The authors of the present study investigated whether those deficits coexist in the same patient and are positively correlated. They tested 8 nondemented PD patients and 6 age-matched control participants by using the modified Wisconsin Card Sorting Test and a motor switching paradigm that is based on the task of reaching toward visual targets, the location of which could unexpectedly be altered within the reaction time. In both mental and motor tasks, patients performed significantly worse than controls. There were no significant correlations between the two types of pathology in individual patients. Mental and motor switching deteriorate in PD patients, but the deficits are not necessarily of parallel severity.

basal ganglia     

Timing and the Control of Rhythmic Upper-Limb Movements

Accurate timing of limb displacement is crucial for effective motor control. The authors examined the effects of movement velocity, duration, direction, added mass, and auditory cueing on timing, spatial, and trajectory variability of single- and multijoint rhythmic movements. During single-joint movements, increased velocity decreased timing and spatial variability, whereas increased movement duration increased timing variability but decreased spatial variability. For multijoint movements, regardless of condition, increasing velocity decreased joint timing, spatial, and trajectory variability, but all hand variabilities were unaffected by velocity, duration, load, or direction. Timing, spatial, and trajectory variability was greater at the shoulder compared with the elbow and minimal at the hand, supporting the notion that reaching movements are planned in hand space as opposed to joint space.     

Intensifying attachment-related sadness and decreasing anger intensity among individuals suffering from unresolved anger: The role of relational reframe followed by empty-chair interventions

This study examined whether two therapy interventions – relational reframe followed by empty chair – were associated with increases in sadness intensity and decreases in anger intensity among a sample of 61 undergraduate students suffering from unresolved anger toward an attachment figure (e.g. parent, sibling, and past-romantic partner). Participants underwent a single analog therapy session comprised of three interventions delivered in sequence: empathic focus on their anger; relational reframe; and empty-chair enactment. Participants retrospectively reported on the intensity of their attachment-related anger and sadness during the session using an interpersonal process recall procedure. Results showed that over the course of the relational reframe and empty-chair intervention sequence, sadness intensity increased and anger intensity decreased. Theoretical and practical implications are discussed.     

An Experience for the Lifelong Journey: The Long-Term Effect of a Class Visit to a Science Center

ABSTRACT

The aim of this study was to explore the multiple outcomes of a class visit to a science center, and to investigate changes in these outcomes over time. The study is significant because relatively little research has been conducted on the long-term effects of school museum visits. The study was carried out in the National Museum of Science, Technology and Space in Israel, which is the largest science museum in the country. Participants were 8th-grade students who had a guided visit in the museum. Students from this class were interviewed immediately after and then again 16 months after the visit. The short- and the long-term interviews were analyzed according to 3 main categories that addressed meaningful learning outcomes: connecting knowledge, communicating knowledge, and fostering lifelong learning. After 16 months the students retained details of the experience; indicated the contribution of the visit to their knowledge; and emphasized peer interactions during the visit. This highlights the significant educational values that students take to their life's journey from the informal learning experience.     

Optimism as a predictor of the effects of laboratory‐induced stress on fears and hope

The objective of the current study is to explore optimism as a predictor of personal and collective fear, as well as hope, following laboratory‐induced stress. Students (N = 107; 74 female, 33 male) were assigned randomly to either the experimental (stress—political violence video clip) or the control group (no‐stress—nature video clip). Questionnaires of fear and hope were administered immediately after the experiment (Time 1) and 3 weeks later (Time 2). Structural equation modeling indicated the following: (a) Optimism significantly predicted both fear and hope in the stress group at Time 1, but not in the no‐stress group. (b) Optimism predicted hope but not fear at Time 2 in the stress group. (c) Hope at Time 1 significantly predicted hope at Time 2, in both the stress and the no‐stress groups. (d) Gender did not predict significantly fear at Time 1 in the stress group, despite a significant difference between genders. This study supports previous studies indicating that optimism plays an important role in people's coping with stress. However, based on our research the data raise the question of whether optimism, by itself, or environmental stress, by itself, may accurately predict stress response.     

How Positive and Negative Feedback Motivate Goal Pursuit

This article explores the feedback individuals give, seek, and respond to in the course of pursuing their goals. We propose that positive feedback motivates goal pursuit when it signals an increase in goal commitment, whereas negative feedback motivates goal pursuit when it signals insufficient goal progress. We review research suggesting that whether individuals are drawn to evaluate their level of commitment versus rate of progress determines the type of feedback (positive or negative) that best motivates them to pursue their goals. We then review research suggesting that these effects of feedback operate by inducing positive and negative general moods as well as specific emotions.     

What measure of interpersonal dependency predicts changes in social support?

One of the most intriguing characteristics of interpersonal dependency is its ability to predict elevated levels of social support. Yet studies of interpersonal dependency use various measures to assess this effect. In this study, I compared 3 commonly used measures of interpersonal dependency in terms of their prediction of social support: Hirschfield's Interpersonal Dependency Inventory (IDI; Hirschfeld et al., 1977), the dependency factor of the Depressive Experiences Questionnaire (DEQ; Blatt, D'Afflitti, & Quinlan, 1976), and the Dependency subscale of the Personal Style Inventory (PSI; Robins et al., 1994). A total of 152 undergraduates were administered these measures as well as measures of depressive symptoms and social support a week prior to their first exam period and a week after this period (interval time = 8 weeks). DEQ-dependency predicted an increase in social support, whereas PSI-Dependency and IDI predicted a decrease in social support over time. DEQ-dependency appears to capture better than the other 2 measures the dialectic tension between risk and resilience in interpersonal dependency.     

Influencing attitudes toward near and distant objects

It is argued that the temporal distance of attitude objects systematically changes how the object is mentally represented, and thus influences the strength of particular persuasive appeals. Three experiments tested the hypothesis that people preferentially attend to arguments that highlight primary, abstract (high-level) vs. incidental, concrete (low-level) features when attitude objects are temporally distant vs. near. Results suggested that when attitude objects are temporally distant vs. near, arguments emphasizing primary vs. secondary features (Study 1), desirability vs. feasibility features (Study 2), and general classes vs. specific cases are more persuasive (Study 3). The relation of construal theory to dual process theories of persuasion and persuasion phenomena, such as personal relevance effects and functional matching effects, are discussed.     

Judging near and distant virtue and vice

We propose that people judge immoral acts as more offensive and moral acts as more virtuous when the acts are psychologically distant than near. This is because people construe more distant situations in terms of moral principles, rather than attenuating situation-specific considerations. Results of four studies support these predictions. Study 1 shows that more temporally distant transgressions (e.g., eating one’s dead dog) are construed in terms of moral principles rather than contextual information. Studies 2 and 3 further show that morally offensive actions are judged more severely when imagined from a more distant temporal (Study 2) or social (Study 3) perspective. Finally, Study 4 shows that moral acts (e.g., adopting a disabled child) are judged more positively from temporal distance. The findings suggest that people more readily apply their moral principles to distant rather than proximal behaviors.