Changing target trajectories influences tracking performance

People have the ability to attentively select and successfully track several moving objects, a process known as multiple-object tracking (MOT; Pylyshyn & Storm Spatial Vision 3: 179–197, 1988). Various factors have been known to influence MOT performance, such as speed, number of distractors, and proximity, while recent work has suggested that object trajectories may also be a factor (Fencsik, Kleiger, & Horowitz Perception and Psychophysics 69: 567–577, 2007). Meanwhile, unexpected changes in motion information have been demonstrated to be a critical facet for attracting attention Howard & Holcombe Attention, Perception & Psychophysics 72: 2087–2095, (2010). Therefore, we suggest that unexpected changes in target trajectories are an important factor in tracking performance. The research presented here controlled for spatial proximity while manipulating the number of instances in which an object changed trajectory. We found that spatial proximity had no effect on tracking performance but, rather, as the number of trajectory changes increased, tracking performance suffered. Results imply that the ability to track multiple moving objects is limited by unexpected changes in direction.     

A new illusion of height and width: taller people are perceived as thinner

It is commonly said that tall people look thinner. Here, we asked whether an illusion exists such that the taller of two equally wide stimuli looks thinner, and conversely whether the thinner of two equally tall stimuli looks taller. In five experiments, participants judged the horizontal or vertical extents of two identical bodies, rectangles, or cylinders that differed only in their vertical or horizontal extents. Our results confirmed the folk wisdom that being tall makes you look thinner. We similarly found that being thin makes you look taller, although this effect was less pronounced. The same illusion was present for filled rectangles and cylinders, but it was consistently stronger for both photographs and silhouettes of the human body, raising the question of why the human form should be more prone to this illusion.     

Types of self-reported anxiety in outpatients with DSM-III-R anxiety disorders1

To ascertain whether psychiatric outpatients can be classified into distinct types according to their self-reported symptoms of anxiety, the Beck Anxiety Inventory (BAI) was administered to 655 outpatients diagnosed with DSM-III-R anxiety disorders. Cluster analysis identified three internally consistent subscales representing subjective, somatic, and panic symptoms. Further analysis revealed six types of outpatients reflecting below average, panic-subjective, low subjective, low somatic-panic, above average, and subjective-somatic anxiety. The types were differentiated with respect to age, primary diagnosis, clinically rated anxiety, and both self-reported and clinically rated depression.     

Evaluation of Training in Mental Health

Abstract

This paper reports on the use of cinema therapy at a psychiatry clinic for inpatients. The program, “Watching Cinema Group Therapy,” was used with over 500 inpatients over the course of one year. We found that using movies for group psychotherapy sessions encouraged the patients to talk about their beliefs, thoughts, and feelings while discussing the characters and stories. We also used the movies as a reward for patients who had developed a therapeutic alliance. It motivated the patients to be active instead of simply remaining in their rooms. As a follow-up to full-length films, it was more useful to show short scenes to patients who had been administered high doses of drugs. Movies can be an important, positive, and productive means of treatment and teaching.     

Cultural Interpretations of Global Information? Hindsight Bias after Reading Wikipedia Articles across Cultures

Summary: Hindsight bias is the mistaken belief that an outcome could have been foreseen once it is known. But what happens after learning about an event? Can reading biased media amplify hindsight distortions? And do people from different cultural backgrounds — with different cognitive thinking styles — draw equal conclusions from equal media reports? We report two studies with Wikipedia articles and samples from different cultures (Study 1: Germany, Singapore, USA, Vietnam, Japan, Sweden, N = 446; Study 2: USA, Vietnam, N = 144). Participants read one of two article versions (foresight and hindsight) about the Fukushima Nuclear Plant and estimated the likelihood, inevitability, and foreseeability of the nuclear disaster. Reading the hindsight article increased individuals' hindsight bias independently of analytic or holistic thinking style. Having excluded survey language as potential impact factor (Study 2), this result remains. Our findings extend prior research on hindsight bias by demonstrating the amplifying effect of additional (biased) information on hindsight bias. Copyright © 2017 John Wiley & Sons, Ltd.     

In-Session Stuck Points and Pitfalls of Community Clinicians Learning CBT: Qualitative Investigation

Given the preponderance of evidence supporting the efficacy of cognitive behavior therapy (CBT), there has been an increased emphasis on dissemination to community mental health systems (CMH). Trainers from two large-scale dissemination initiatives (n = 27) were surveyed regarding the common pitfalls and difficulties encountered by CMH clinicians learning CBT. Common pitfalls were organized according to the items of the Cognitive Therapy Rating Scale (CTRS; Young & Beck, 1980) and reviewed. Guided discovery was reported to be the most challenging CBT competency to learn. Qualitative methods were used to construct a grounded theory; trainer responses indicated they viewed the practice of CBT as not only a set of discrete skills, but also a way of thinking. Efforts may be needed to provide support, assistance, and resources to these CMH clinicians as they continue to build CBT competency.     

Participation bias among suicidal adults in a randomized controlled trial

Although individuals who attempt suicide have poor compliance rates with treatment recommendations, the nature and degree of participation bias in clinical treatment research among these individuals is virtually unknown. The purpose of this study was to examine participation bias by comparing the demographic and diagnostic characteristics of adult suicide attempters who participated in a randomized controlled trial to a sample of nonparticipants. Results indicated that males and individuals with a diagnosis of substance abuse or dependence were more likely to be participants in the randomized controlled trial. The implications of these findings for suicide intervention research are discussed.     

Do you see what I see? Infants’ reasoning about others’ incomplete perceptions

Twelve‐month‐olds realize that when an agent cannot see an object, her incomplete perceptions still guide her goal‐directed actions. What would happen if the agent had incomplete perceptions because she could see only one part of the object, for example one side of a screen? In the present research, 16‐month‐olds were first shown an agent who always pointed to a red object, as opposed to a black or a yellow object, suggesting that she preferred red over the other colours. Next, two screens were introduced while the agent was absent. The screens were (1) red or green on both sides; (2) red on the front (infants’ side) but green on the back (the agent’s side) or vice versa; or (3) only coloured red or green on the front. During test, the agent, who could see only the back of the screens, pointed to one of the two screens. The results revealed that while infants expected the agent to continue acting on her colour preference and point to the red rather than the green screen during test, they did so in accord with the agent’s perception of the screens, rather than their own perceptions: they expected the agent to point to the red screen in (1), but to the green‐front screen in (2), and they had no prediction of which screen the agent should point to in (3). The implications of the present findings for early psychological reasoning research are discussed.