Movement-based compatibility in simple response tasks

Previous studies reported that movement observation affected movement execution. Using one and the same set of responses (i.e., lifting or tapping the finger), correspondence effects were observed for simple responses when the go-signals were similar to the responses (i.e., movies of finger movements) but not when they were dissimilar (i.e., moving squares). The difference was attributed to a higher degree of ideomotor compatibility with visible limb movements. We tried to provide further evidence for ideomotor theory by manipulating the degree to which different responses matched one and the same set of stimuli (drifting sine-wave gratings). To this end, we measured simple reaction time of dynamic (hand movements) or static (key presses) movements in response to the onset of object motion. Object motion and dynamic responses showed ideomotor compatibility without looking alike; however, both stimulus and response involved continuous displacements. Correspondence effects were observed for dynamic responses, but not for static responses.     

Political Authority,Practical Identity,and Binding Citizens

Abstract

Allen Buchanan (2002) argues that it doesn’t matter whether a state has authority in the sense of being able to create binding obligations for its citizens, so long as it is morally justified in wielding political power. In this paper, I look at this issue from a slightly different angle. I argue that it matters a great deal whether citizens relate to their state in an obligatory fashion. This is for two reasons. First, a fully morally justified state must be an efficacious state; it must be able to realise its values and make its rules stick. My contention will be that enduring stability can only be secured when citizens, or at least a significant proportion of citizens, are tangibly bound to regulate their conduct in accordance with a principle of obedience to just states. Second, it is only when individuals interact in the right way with the justification for state power that the state itself as a pervasive and coercive entity does not pose a problem for them as reason-responsive agents. In fact, under the right circumstances, submission to state authority can greatly enhance autonomy as it facilitates collective responses to challenges that individuals would struggle to overcome alone.     

Prospective Memory and Pediatric Traumatic Brain Injury: Effects of Cognitive Demand

This study investigated the effects of pediatric traumatic brain injury (TBI) on prospective memory. Fourteen children and 14 adolescents with TBI were compared with 25 and 23 noninjured children and adolescents, respectively. Based on a prefrontal model, the cognitive demand on the ongoing component of a prospective-memory task was manipulated. Overall, those with TBI had poorer prospective-memory performance than their noninjured peers. Performance was worse in a high cognitive-demand condition than a low, and younger children performed worse than adolescents. Decreases in performance from the low- to high-demand conditions were not significantly different between the two children's groups but were between the two adolescents' groups. Furthermore, the age and injury effects were reflected in the performances on executive function tests: the Self-ordered Pointing Task (SOPT), and the Stroop Color Word Interference Test. The Tower of London (TOL), which did not produce age or injury effects, was nevertheless found to be an important predictor of performance on the high-demand task in those with TBI. Although previous research has demonstrated impaired prospective memory performance in children with TBI, this study attempted to explain why this might occur, specifically that the prefrontal regions might be implicated.     

Post-traumatic stress symptoms in mothers of children with leukaemia undergoing the first 12 months of therapy: Predictive models

The aim of this study consists in the measurement of psychological health and adaptation in mothers of children during the first 12 months of treatment for leukaemia and in the identification of possible early predictors. Ninety-four mothers were followed longitudinally at one week (T1), one month (T2), six months (T3) and 12 months (T4) post-diagnosis. The instruments used were: PTSD symptom checklist, BSI-18, Problem Scale, Ladder of life and an in-depth interview (EFI-C). Couple connectedness, family routine reorganisation, parental communication around the child's illness and trust in the medical care significantly increased from T1 to T4. Two models are proposed concerning possible predictors of mothers’ PTSS at T2 and at T3. Clinical suggestions are proposed on the basis of our empirical findings in order to plan informative, clinical and practical interventions for mothers of children under treatment for leukaemia.     

The Disease Concept of Alcoholism by E. M. Jellinek

The authors use the philosophical writings of Martin Buber to discuss intimacy and distance in group psychotherapy. They argue that there are two entirely different types of dynamics. The first is a relationship and real meeting between members of the group that necessarily ends, as do all I–You relationships, with a transition to I–It relations. In the second type of dynamic the relations are on the It dimension, in which others exist only as the content of the individual's experience. Any apparent intimacy that develops is limited by the very attitude to others as objects of the “I,” and ends with disappointment in the realization that there is no real intimacy and meeting.     

Gender,Low Self-Control,and Violent Victimization

Prior research demonstrates that men generally experience higher levels of violent victimization relative to women. Using a high-risk sample of jail inmates, the present study draws on the core ideas from the self-control and societal norms toward the treatment of women literatures to examine the main and interactive effects of gender and self-control on violent victimization. Results indicate that gender and self-control both exhibit main effects on violent victimization net of control variables and that gender and self-control interact such that the gender gap in violent victimization disappears among men and women with low levels of self-control. We discuss the implications of our findings for theory, policy, and future research.     

Coping with asymmetry: How infants and adults walk with one elongated leg

The stability of a system affects how it will handle a perturbation: The system may compensate for the perturbation or not. This study examined how 14-month-old infants—notoriously unstable walkers—and adults cope with a perturbation to walking. We attached a platform to one of participants’ shoes, forcing them to walk with one elongated leg. At first, the platform shoe caused both age groups to slow down and limp, and caused infants to misstep and fall. But after a few trials, infants altered their gait to compensate for the platform shoe whereas adults did not; infants recovered symmetrical gait whereas adults continued to limp. Apparently, adult walking was stable enough to cope with the perturbation, but infants risked falling if they did not compensate. Compensation depends on the interplay of multiple factors: The availability of a compensatory response, the cost of compensation, and the stability of the system being perturbed.