Examining antecedents and outcomes of part‐time working nurses' motives to search and not to search for a full‐time position

Grounded in self‐determination theory, this study sought to examine the antecedents and outcomes of part‐time working nurses' (n = 404) motives for searching and not searching for full‐time employment. After controlling for various background variables, autonomous motivation and economic motivation to search for a full‐time job related positively to job search intensity, controlled motivation to search related negatively to experienced positive experiences of part‐time work, whereas autonomous motivation not to search related negatively to job search intensity and positively to positive experiences from part‐time work. Finally, experienced managerial autonomy support toward part‐time work and negative feedback from colleagues regarding part‐time work were established as contextual antecedents of part‐time nurses' autonomous and controlled motives to search and not to search.     

The Importance of Perceived Care and Connectedness with Friends and Parents for Adolescent Social Anxiety

Nonclinical social anxiety in adolescence can be highly problematic, as it likely affects current and especially new social interactions. Relationships with significant others, such as close friends, mothers, and fathers, could aid socially anxious adolescents’ participation in social situations, thereby helping reduce feelings of social anxiety. We examined whether making friends as well as high friendship quality help reduce social anxiety over time, and whether friends’, mothers’, and fathers’ care interact in reducing social anxiety. Using longitudinal data from 2,194 participants in a social network (48% girls; M_age = 13.58) followed for 3 years, we estimated friendship selection and influence processes via a continuous time‐modeling approach using SIENA. We controlled for the effects of depressive symptoms, self‐esteem, gender, age, and family structure. Our findings suggest that perceived care by friends mediated the effect of making friends on social anxiety. Perceptions of mother and father, as well as friend care and connectedness, respectively, did not interact in decreasing social anxiety. Nonetheless, care and connectedness with mothers, fathers, and friends jointly predicted decreases in social anxiety. Caring relationships with friends and parents each play a role in mutually protecting early adolescents against increasing in social anxiety over time.     

Psychopathology Symptoms,Rumination and Autobiographical Memory Specificity: Do Associations Hold After Bereavement?

Symptoms of psychopathology are associated with overgeneral memory retrieval. Overgeneral memory is hypothesized to be the result of an emotion regulatory process, dampening emotional reactions associated with retrieval of distressing specific memories. However, higher post‐loss symptom severity has been related to higher specificity of loss‐related memories recalled on the Autobiographical Memory Test. This may imply that such memories are ‘immune’ to the reduced specificity effect. We aimed to test this idea by investigating, for the first time, associations of depressive and complicated grief symptoms and depressive and grief rumination with autobiographical memory specificity on a sentence‐completion task (SCEPT) in a bereaved sample. One hundred ninety‐one adult mourners (89% women) filled out questionnaires and the SCEPT. A main finding was that higher depressive and complicated grief symptom and grief rumination levels were associated with reduced specificity of non‐loss‐related memories but not with specificity of loss‐related memories. Implications of these results are discussed. Copyright © 2015 John Wiley & Sons, Ltd.     

Prove it! The Burden of Proof Game in Science vs. Pseudoscience Disputes

The concept of burden of proof is used in a wide range of discourses, from philosophy to law, science, skepticism, and even in everyday reasoning. This paper provides an analysis of the proper deployment of burden of proof, focusing in particular on skeptical discussions of pseudoscience and the paranormal, where burden of proof assignments are most poignant and relatively clear-cut. We argue that burden of proof is often misapplied or used as a mere rhetorical gambit, with little appreciation of the underlying principles. The paper elaborates on an important distinction between evidential and prudential varieties of burdens of proof, which is cashed out in terms of Bayesian probabilities and error management theory. Finally, we explore the relationship between burden of proof and several (alleged) informal logical fallacies. This allows us to get a firmer grip on the concept and its applications in different domains, and also to clear up some confusions with regard to when exactly some fallacies (ad hominem, ad ignorantiam, and petitio principii) may or may not occur.     

The role of daily need crafting in daily fluctuations in adolescents’ need-based and affective experiences

Based on self-determination theory, this diary study examined associations between adolescents’ daily need crafting and daily fluctuations in their need-based and affective experiences. We also examined the role of daily perceived autonomy-supportive parenting in adolescents’ daily need-crafting. Adolescents (N?=?159; M_age?=?15.56; 62% female) filled out a diary for seven consecutive days. Multilevel path analyses indicated that need crafting varied on a day-to-day basis, with daily need crafting relating positively to daily positive affect and negatively to negative affect. The benefits of daily need crafting were accounted for by higher daily need satisfaction and lower need frustration. Further, on days adolescents perceived more parental autonomy support, they reported more need satisfaction and less need frustration, an effect that was partially due to higher need crafting that day. Overall, the results suggest that need crafting represents a critical pro-active skill, with resulting benefits for adolescents’ daily need-based experiences and well-being.

     

Contemporary theories of 1/f noise in motor control

1/f noise has been discovered in a number of time series collected in psychological and behavioral experiments. This ubiquitous phenomenon has been ignored for a long time and classical models were not designed for accounting for these long-range correlations. The aim of this paper is to present and discuss contrasted theoretical perspectives on 1/f noise, in order to provide a comprehensive overview of current debates in this domain. In a first part, we propose a formal definition of the phenomenon of 1/f noise, and we present some commonly used methods for measuring long-range correlations in time series. In a second part, we develop a theoretical position that considers 1/f noise as the hallmark of system complexity. From this point of view, 1/f noise emerges from the coordination of the many elements that compose the system. In a third part, we present a theoretical counterpoint suggesting that 1/f noise could emerge from localized sources within the system. In conclusion, we try to draw some lines of reasoning for going beyond the opposition between these two approaches.     

Timing the moment of impact in fast human movements

The reported resolution of timing the moment of impact in fast human movements differs widely depending on the task. Surprisingly, better timing is reported for the demanding task of batting a ball than for the much simpler task of tapping in synchrony with two hands. We wondered whether this is because a sizeable part of timing variability arises from misjudging the distance in the direction of one's own movement, so that moving faster (as the bat does when moving toward a ball) improves timing. We found that moving faster does indeed improve timing in both the above-mentioned tasks. After removing the proposed contribution of misjudging the distance in the direction of one's own movement, we estimated that the remaining standard deviation in timing is just over 6ms for both tasks.     

Temperature dependency in motor skill learning

The present study investigated the role of temperature as a contextual condition for motor skill learning. Precision grip task training occurred while forearm cutaneous temperature was either heated (40-45 °C) or cooled (10-15 °C). At test, temperature was either reinstated or changed. Performance was comparable between training conditions while at test, temperature changes decreased accuracy, especially after hot training conditions. After cold training, temperature change deficits were only evident when concurrent force feedback was presented. These findings are the first evidence of localized temperature dependency in motor skill learning in humans. Results are not entirely accounted for by a context-dependent memory explanation and appear to represent an interaction of neuromuscular and sensory processes with the temperature present during training and test.