Coordination Between Arm and Leg Movements During Locomotion

To evaluate the contrasting dynamical and biomechanical interpretations of the 2:1 frequency coordination between arm and leg movements that occurs at low walking velocities and the 1:1 frequency coordination that occurs at higher walking velocities, the authors conducted an experiment in which they quantified the effect of walking velocity on the stability of the frequency and phase coordination between the individual limb movements. Spectral analyses revealed the presence of 2:1 frequency coordination as a consistent feature of the data in only 3 out of 8 participants at walking velocities ranging from 1.0 to 2.0 km/h, in spite of the fact that the eigenfrequencies of the arms were rather similar across participants. The degree of interlimb coupling, as indexed by weighted coherence and variability of relative phase, was lower for the arm movements and for ipsilateral and diagonal combinations of arm and leg movements than for the leg movements. Furthermore, the coupling between all pairs of limb movements was found to increase with walking velocity, whereas no clear signs were observed that the switches from 2:1 to 1:1 frequency coordination and vice versa were preceded by loss of stability. Therefore, neither a purely biomechanical nor a purely dynamical model is optimally suited to explain these results. Instead, an integrative model involving elements of both approaches seems to be required.     

The Kosovar sponsoring experience in Northern Alberta

We examine the experiences of sponsors who assisted Kosovar refugees in Northern Alberta. Although the sponsors of the Kosovars did not provide basic financial support to the refugees, many found their role to be onerous, particularly in terms of emotional investment and demands on their time. They would have liked more opportunity to debrief and to have contact with other experienced sponsors. Some of the sponsors' initial expectations of the Kosovars were at odds with reality; conversely, many sponsors felt that the refugees had unrealistic expectations of them and of life in Canada. Recommendations are made for future sponsoring arrangements.     

Active tuberculosis detection by pouched rats in 2014: More than 2,000 new patients found in two countries

Tuberculosis (TB) is a major problem in poor countries because sensitive diagnostic tools are unavailable. In 2014, our pouched rats evaluated sputum from 21,600 Tanzanians and 9,048 Mozambicans whose sputum had previously been evaluated by microscopy, the standard diagnostic for TB. Evaluation by the rats revealed 1,412 new patients with active TB in Tanzania and 645 new patients in Mozambique, increases of 39% and 53%, respectively, when compared to detections by microscopy alone. These results provide further support for the applied use of scent‐detecting rats.     

One after the other: Effects of sequence patterns of breached and overfulfilled obligations

To date, the study of psychological contracts has primarily centred on the question how retrospective evaluations of the psychological contract impact employee attitudes and behaviours, and/or focus on individual coping processes in explaining responses to breached or overfulfilled obligations. In this study, we aim to assess the extent to which sequences of breached and overfulfilled obligations impact job satisfaction and citizenship behaviour intentions. By integrating psychological contract research and theories on cognitive information processing, we formulate competing hypotheses on how sequences of breached and/or overfulfilled obligations lead to patterns of job satisfaction and citizenship behaviour intentions. These competing hypotheses were tested using a vignette study and an experiment. A Bayesian approach was used to test these pattern hypotheses directly against each other. The results show that breached obligations have an immediate negative impact on our outcome variables. Moreover, sequentially breached obligations lead to a continuous decline of job satisfaction and citizenship behaviour intentions. Overfulfilled obligations do little to compensate this negative impact. Implications for theory and practice are discussed.     

Classifying personality disorder according to severity

Current systems for classifying personality disorder according to specific categories are unsatisfactory because they do not take account of wide variations in levels of personality disturbance and associated impairment. We review previous attempts to classify personality disorder according to severity and place these findings in the context of work exploring the severity of other mental disorders. On the basis of these findings, we propose a new system for classifying personality-related problems based on severity defined by the extent of personality disturbance, the level of social dysfunctioning, and the impact of the disorder for individuals and society. We recognize that studies using these definitions will need piloting and testing in field trials, but believe that this simplified approach to classifying personality disorder would encourage greater use by clinicians and assist those involved in planning services for people with personality disorder.     

The Feminizing Effect of Sexual Violence in Third-Party Perceptions of Male and Female Victims

Sex Roles - Various scholars have noted that the label “victim” frequently elicits connotations of stereotypical, passive femininity—especially when the crime entails rape or...     

Bayesian model selection of informative hypotheses for repeated measurements

When analyzing repeated measurements data, researchers often have expectations about the relations between the measurement means. The expectations can often be formalized using equality and inequality constraints between (i) the measurement means over time, (ii) the measurement means between groups, (iii) the means adjusted for time-invariant covariates, and (iv) the means adjusted for time-varying covariates. The result is a set of informative hypotheses. In this paper, the Bayes factor is used to determine which hypothesis receives most support from the data. A pivotal element in the Bayesian framework is the specification of the prior. To avoid subjective prior specification, training data in combination with restrictions on the measurement means are used to obtain so-called constrained posterior priors. A simulation study and an empirical example from developmental psychology show that this prior results in Bayes factors with desirable properties.     

The role of moral identity in the aftermath of dishonesty

People lie on a regular basis. However, lying can pose a threat to the self-view of being an honest and moral person. How do people respond to their previous dishonest acts? A way to deal with psychological discomfort arisen for previous lying is reconfirming oneself to be an honest and moral person, for example, by showing subsequent moral behavior. We hypothesize that people engage in this reconfirmation depending on whether their moral identity is central to their self-concept. This was supported in three studies in which, compared to low moral identifiers, high moral identifiers engaged in more efforts to uphold a moral self-image and were more likely to show a compensatory reaction rather than a consistency reaction to their previous dishonesty. Implications for the topics of moral self-regulation and compensatory ethics and for the concept of moral identity are discussed.     

Personality Characteristics of BASE Jumpers

BASE jumping is an extreme sport, which is associated with significant risk of injury and death. We aimed to determine whether BASE jumpers have different personality characteristics to an age-matched, normal control population. An international population of BASE jumpers was examined using the Temperament and Character Inventory (TCI). Mean age was thirty-four years; fifty-nine (87%) jumpers were male; twenty-eight (41%) jumpers had sustained a significant injury. A substantial proportion of the BASE jumpers presented extremely low scores in the temperament measure of Harm Avoidance (p < 0.001); the extent of which has not been reported in any other population.