Naive optics: acting on mirror reflections

It is known that naive observers have striking misconceptions about mirror reflections. In 5 experiments, this article systematically extends the findings to graphic stimuli, to interactive visual tasks, and finally to tasks involving real mirrors. The results show that the perceptual knowledge of nonexpert adults is far superior to their conceptual knowledge. Whereas conceptual errors include the assumption of left-right reversals in mirror images and often blatant extensions of the boundary of mirror space, the perceptual context prevents most such errors. However, a consistent bias to misjudge objects in mirrors too far to the outside is demonstrable in all cases including tasks with real mirrors. The authors present a 2-stage hypothesis consisting of an implicit bias of judging the mirror surface to be turned toward the observer's line of sight followed by a normalization that becomes explicit.     

Naive optics: understanding the geometry of mirror reflections

Paper-and-pencil tasks showed that many university students believed that when laterally approaching a mirror, they would see a reflection in the mirror before it was geometrically possible. Participants failed to adequately factor in the observer's location in the room. However, when asked about the behavior of a ray of light, participants knew about the law of reflection. No differences between psychology and physics students were detected, suggesting that the phenomenon is widespread and refractory to training. The findings were replicated with observers making judgments about image locations in a real room using a pretend mirror. Possible heuristics about mirror reflection that might explain the data are discussed. Naive optics is a promising venue to further knowledge of how observers understand basic laws of physics.     

On attentional control as a source of residual shift costs: evidence from two-component task shifts

It is widely assumed that supervisory or attentional control plays a role only in the preparatory reconfiguration of the mental system in task shifting. The well-known fact that residual shift costs are still present even after extensive preparation is usually attributed to passive mechanisms such as cross talk. The authors question this view and suggest that attentional control is also responsible for residual shift costs. The authors hypothesize that, under shift conditions, tasks are executed in a controlled mode to guarantee reliable performance. Consequently, the control of 2 task components should require more resources than the control of only 1. A series of 4 experiments with 2-component tasks was conducted to test this hypothesis. As expected, more residual shift costs were observed when 2 components rather than 1 varied across trials. Interference effects and sequential effects could not account for these results.     

Effects of MK-801 and ethanol combinations on memory consolidation in CD1 mice: involvement of GABAergic mechanisms

In the present research the effect of the noncompetitive N-methyl-d-aspartate receptor antagonist MK-801 and ethanol combinations on memory consolidation and the involvement of GABAergic mechanisms in this effect were investigated in CD1 mice injected intraperitoneally with the drugs immediately or 120 min after training in a one-trial inhibitory avoidance apparatus and tested for retention 24 h later. The results showed that (a) the retention performances of mice were impaired in a dose-dependent manner by immediate posttraining MK-801 (0.2 and 0.3, but not 0.1 mg/kg) and ethanol (1 and 2, but not 0.5 g/kg) administrations; (b) an otherwise ineffective dose of MK-801 (0.1 mg/kg) enhanced the deleterious effect exerted by ethanol (1 and 2 g/kg); (c) an otherwise ineffective dose of muscimol (0.5 mg/kg) enhanced, while otherwise ineffective doses of picrotoxin (0.25 mg/kg) or bicuculline (0.1 mg/kg) antagonized, this effect; and (d) no effect was observed when the treatments were carried out 120 min after training, suggesting that the effects observed following immediate posttraining administrations were due to the influence on the consolidation of memory. From these experiments it is evident that (a) MK-801 enhances ethanol's effects on memory consolidation and (b) GABAergic mechanisms are involved in this effect.     

Editorial

Market‐oriented changes within the NHS in the last 15 years have increasingly created difficulties with funding of referrals to tertiary psychotherapy health providers. The often‐cumbersome, time‐consuming and expensive bureaucratic procedures now required by the Primary Care Trusts to fund patients referred to tertiary care services leads to lengthy delays in the pathway from assessment to treatment. This paper describes a systematic survey of funding and administrative delays endured by the 23 patients referred on a cost‐per‐case basis to the Outreach Personality Disorder service at the Cassel Hospital over a 1‐year period. The results of the survey found that the median administrative delay patients endured between referral to treatment funding decision was 141 days. Two cases are presented to illustrate the difficulties encountered by patients who have to go through several obstacles before they can obtain the treatment they need. The implications of NHS reforms for the future of socialized healthcare in general and for psychotherapy tertiary care service provision in particular are highlighted in the discussion.     

Delay discounting as emotional processing: An electrophysiological study

Both theoretical models and functional imaging studies implicate the involvement of emotions within the delay discounting process. However, defining this role has been difficult to establish with neuroimaging techniques given the automaticity of emotional responses. To address this, the current study examined electrophysiological correlates involved in the detection and evaluation of immediate and delayed monetary outcomes. Our results showed that modulation of both early and later ERP components previously associated with affective stimuli processing are sensitive to the signalling of delayed rewards. Together with behavioural reaction times that favoured immediacy, we demonstrated, for the first time, that time delays modify the incentive value of monetary rewards via mechanisms of emotional bias and selective visual attention. Furthermore, our data are consistent with the hypothesis that delayed and thus intangible rewards are perceived less saliently, and rely on emotion as a common currency within decision making. This study provides a new approach to delay discounting and highlights a potential novel route through which delay discounting may be investigated.     

Departing from Classical Logic: A Logical Analysis of Personal Construct Theory

This article draws a parallel between personal construct theory and intuitionistic logic i, in order to account for Kelly's claim to have departed from classical logic. Assuming that different theoretical paradigms correspond to different logical languages, it is argued that the constructivist paradigm is linked to intuitionism. Similarities between some key syntactic and semantic features of i logic and the underlying logic of Kelly's theory are made explicit. The strengths and limitations of such an approach are discussed in light of issues emerging from clinical observation and from the philosophy of science.     

Representational momentum,internalized dynamics,and perceptual adaptation

In this paper I look at dynamic mental representations, motion detection under conditions of certainty or uncertainty, perceptual adaptation, and priming of motion direction. The goal is to bridge the boundaries created in part by the use of different terminology within different literatures. The most fruitful parallel may be between the phenomenon of dynamic mental representation and representational momentum on the one hand, and perceptual adaptation as revealed by motion priming on the other. I suggest an overlap between the two phenomena.     

Leading yourself and leading others: Linking self-leadership to transformational,transactional, and laissez-faire leadership

It has often been proposed that one must lead oneself before being able to lead others (e.g., Drucker, 1999 Drucker, P. 1999. Managing oneself. Harvard Business Review, : March–April, 65–74.  [Google Scholar]; Manz & Sims, 1991 Manz, C. C. and Sims, H. P. Jr. 1991. Superleadership: Beyond the myth of heroic leadership. Organizational Dynamics, 19: 18–35. [Crossref], [Web of Science ®] , [Google Scholar]; Pearce, 2007 Pearce, C. L. 2007. The future of leadership development: The importance of identity, multi-level approaches, self-leadership, physical fitness, shared leadership, networking, creativity, emotions, spirituality and on-boarding processes. Human Resource Management Review, 17: 355–359. [Crossref] , [Google Scholar]). In two studies, we empirically investigated associations among self-leadership (with subfacets) and the full range leadership model (transformational, transactional, laissez-faire leadership) in N = 447 professionals with leadership experience (Study 1) and N = 35 leaders with N = 151 followers (Study 2). In both studies, leaders' self-leadership was positively associated with active styles of leading (transformational and transactional leadership) and negatively with passive styles of leading (laissez-faire leadership), as indicated by self- and follower-reports. These relationships remained even after controlling for sex, age, and leadership experience. Overall, data support the notion that effectively leading oneself is associated with effectively leading others.     

Quantifying violence in mental health research

Research into mental illness and its relationship with violence has been constrained by inconsistencies in the definition and measurement of violent behavior. We conducted a systematic literature search of Scopus, EMBASE, PsycINFO, and Ovid Medline with search terms relating to the measurement, rating and quantification of violent behavior in mentally disordered populations. We identified nine tools designed to assess violence and critically evaluated them. Broadly, measurement tools tended to focus on multiple, but different, facets of violence, which included: severity of act, severity of outcome, frequency and intent, with each suggested as a valid outcome measure for violent acts. The use of multiple sources of information to inform assessment appears to provide detail; however, that detail is then often diluted as a result of dichotomization of sample groups. This presents methodological challenges for the field. Future studies should give consideration to the trade-off between preserving the richness of data and the difficulties associated with recruiting large patient samples. Studies should move from simply defining violence towards quantification across different dimensions of violence and using multiple sources of information.