Sex differences in discrimination reversal learning in the guppy

In several mammalian and avian species, females show a higher performance than males in tasks requiring cognitive flexibility such as the discrimination reversal learning. A recent study showed that female guppies are twice as efficient as males in a reversal learning task involving yellow–red discrimination, suggesting a higher cognitive flexibility in female guppies. However, the possibility exists that the superior performance exhibited by females does not reflect a general sex difference in cognitive abilities, but instead, is confined to colour discrimination tasks. To address this issue, we compared male and female guppies in two different discrimination reversal learning tasks and we performed a meta-analysis of these experiments and the previous one involving colour discrimination. In the first experiment of this study, guppies were tested in a task requiring them to learn to select the correct arm of a T-maze in order to rejoin a group of conspecifics. In experiment 2, guppies were observed in a numerical task requiring them to discriminate between 5 and 10 dots in order to obtain a food reward. Although females outperformed males in one condition of the T-maze, we did not find any clear evidence of females’ greater reversal learning performance in either experiment. However, the meta-analysis of the three experiments supported the hypothesis of females’ greater reversal learning ability. Our data do not completely exclude the idea that female guppies have a generally higher cognitive flexibility than males; however, they suggest that the size of this sex difference might depend on the task.     

Do domestic dogs (<Emphasis Type="Italic">Canis lupus familiaris</Emphasis>) perceive the Delboeuf illusion?

In the last decade, visual illusions have been repeatedly used as a tool to compare visual perception among species. Several studies have investigated whether non-human primates perceive visual illusions in a human-like fashion, but little attention has been paid to other mammals, and sensitivity to visual illusions has been never investigated in the dog. Here, we studied whether domestic dogs perceive the Delboeuf illusion. In human and non-human primates, this illusion creates a misperception of item size as a function of its surrounding context. To examine this effect in dogs, we adapted the spontaneous preference paradigm recently used with chimpanzees. Subjects were presented with two plates containing food. In control trials, two different amounts of food were presented in two identical plates. In this circumstance, dogs were expected to select the larger amount. In test trials, equal food portion sizes were presented in two plates differing in size: if dogs perceived the illusion as primates do, they were expected to select the amount of food presented in the smaller plate. Dogs significantly discriminated the two alternatives in control trials, whereas their performance did not differ from chance in test trials with the illusory pattern. The fact that dogs do not seem to be susceptible to the Delboeuf illusion suggests a potential discontinuity in the perceptual biases affecting size judgments between primates and dogs.     

Infant Predictors of Toddler Effortful Control: A Multi‐method Developmentally Sensitive Approach

Effortful control (EC) is a form of self‐regulation characterized by inhibition of dominant responses in favour of more adaptive subdominant responses. In the present study, temperamental antecedents in infancy were examined in relationship to toddler EC. Parents reported on infant temperament at 6, 8, 10, and 12 months, using the regulatory capacity/orienting (RCO) factor of the Infant Behavior Questionnaire‐Revised. Laboratory indicators of this temperamental construct were also collected at each time point via the Temperament Laboratory Assessment. Relations between changes in temperament across the first year of life and toddler EC (mean age = 22 months) were examined using multilevel modelling. Parent‐reported RCO and the component subscale of cuddliness more specifically were the only temperamental variables that prospectively predicted toddler EC. Copyright © 2016 John Wiley & Sons, Ltd.     

App-guided exposure and response prevention for obsessive compulsive disorder: an open pilot trial

Although effective treatments for obsessive–compulsive disorder (OCD) exist, there are significant barriers to receiving evidence-based care. Mobile health applications (Apps) offer a promising way of overcoming these barriers by increasing access to treatment. The current study investigated the feasibility, acceptability, and preliminary efficacy of LiveOCDFree, an App designed to help OCD patients conduct exposure and response prevention (ERP). Twenty-one participants with mild to moderate symptoms of OCD were enrolled in a 12-week open trial of App-guided self-help ERP. Self-report assessments of OCD, depression, anxiety, and quality of life were completed at baseline, mid-treatment, and post-treatment. App-guided ERP was a feasible and acceptable self-help intervention for individuals with OCD, with high rates of retention and satisfaction. Participants reported significant improvement in OCD and anxiety symptoms pre- to post-treatment. Findings suggest that LiveOCDFree is a feasible and acceptable self-help intervention for OCD. Preliminary efficacy results are encouraging and point to the potential utility of mobile Apps in expanding the reach of existing empirically supported treatments.     

The impact of experiential avoidance on the relations between illness representations,pain catastrophising and pain interference in chronic pain

Objective: The aim of this study was to examine the effects of experiential avoidance (EA) on the indirect relationship of chronic pain patients’ illness representations to pain interference, through pain catastrophising

Design and main outcome measure: The sample consisted of 162 patients diagnosed with an arthritis-related or a musculoskeletal disorder. The effects of EA on the pathway between illness representations, pain catastrophising and pain interference were examined with PROCESS, a computational tool for SPSS

Results: After controlling for patient and illness-related variables and pain severity, the ‘illness representations–pain catastrophising–pain interference’ pathway was interrupted at the higher levels of EA. The reason was that, at the high levels of EA, either the relation of illness representations to pain catastrophising or the relation of pain catastrophising to pain interference was not statistically significant.

Conclusion: The findings indicate that EA is not a generalised negative response to highly aversive conditions, at least as far as the factors examined in this study are concerned. EA may rather reflect a coping reaction, the impact of which depends on its specific interactions with the other aspects of the self-regulation mechanism. At least in chronic pain, EA should become the focus of potential intervention only when its interaction with the illness-related self-regulation mechanism results in negative outcomes.     

From Motivation to Activation: Why Engaged Workers are Better Performers

Purpose

The purpose of this study was to investigate the relationship between work engagement and multiple dimensions of employee performance, as mediated by open-mindedness.

Design/Methodology/Approach

Survey data were obtained from 186 employees of a food processing plant and the findings were cross-validated in an independent convenience sample (N = 308).

Findings

SEM analyses revealed that the more engaged the employees were, the more they displayed extra-role and in-role performance. As expected, these associations were partially mediated by open-mindedness. Results were ambiguous for counterproductive performance showing a direct negative relation between engagement and counter productivity, and an indirect, positive relation through open-mindedness.

Implications

With its systematic look at the relation between engagement and multiple indicators of performance, the current study shows why it is important for both employers and employees to invest in engaged employees: there is a relationship with better performance which can partly be explained by the fact that engagement is associated with open-mindedness. This may help to inform organizations under what circumstances engagement leads to positive or negative forms of performance. Vice versa, a decrease in the multiple indicators of performance may signal organizations to look after their employees' mental health, i.e., engagement.

Originality/Value

This is one of the first studies to include multiple dimensions of employee performance in relation to work engagement. Moreover, it is one of the first studies that focus on the underlying psychological process that might explain for this relationship.

     

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.     

Problem Space Matters: The Development of Creativity and Intelligence in Primary School Children

Previous research showed that in primary school, children’s intelligence develops continually, but creativity develops more irregularly. In this study, the development of intelligence, measured traditionally, i.e., operating within well-defined problem spaces (Standard Progressive Matrices) was compared with the development of intelligence operating in ill-defined problem spaces (Creative Reasoning Task) and the development of creativity (Test of Creative Thinking-Drawing Production), in primary school children (N = 175) across four grade levels. Results showed that problem space matters: Traditional intelligence test scores increased regularly with grade level, whereas creativity, as well as intelligence operating in an ill-defined problem space, developed irregularly but similarly. This suggests that when creativity is fostered, intelligence’s ability to operate in ill-defined problem space may be fostered, likewise.     

Clinical Cancer Genetics Disparities among Latinos

The three major hereditary cancer syndromes in Latinos (Hereditary Breast and Ovarian Cancer, Familial Adenomatous Polyposis and Lynch Syndrome) have been shown to exhibit geographic disparities by country of origin suggesting admixture-based disparities. A solid infrastructure of clinical genetics geared towards diagnosis and prevention could aid in reducing the mortality of these cancer syndromes in Latinos. Currently, clinical cancer genetic services in Latin America are scarce. Moreover, limited studies have investigated the mutational spectrum of these cancer syndromes in Latinos resulting in gaps in personalized medicine affecting diagnosis, treatment and prevention. The following commentary discusses available genotype and clinical information on hereditary cancer in Latinos and highlights the limited access for cancer genetic services in Latin America including barriers to genetic testing and alternatives for providing better access to genetic services. In this review, we discuss the status of clinical genetic cancer services for both US Latinos and those Latinos living in Latin America.     

Implementing a Primary Mental Health Service for Children: Administrator and Provider Perspectives

The Child Mental Health Service (CMHS) is an Australian primary care program introduced in July 2010 to provide mental healthcare to children who have, or are at risk of, developing psychological disorders. The Australian Government provided supports (e.g., training for mental health professionals), resources (e.g., funding for positions devoted to fostering inter-agency linkages or partnerships) and various flexibilities in service delivery. This study aimed to explore the processes used in the implementation of the CMHS in order to achieve its objectives of delivering a high quality standard of service, and forging linkages and support networks with other relevant health and non-health agencies. Structured interviews were conducted with 20 program administrators, six referring professionals and eight mental health professionals. Interviews were recorded, transcribed and analysed for themes using NVivo. The CMHS appears to have made good progress towards achieving its objectives by implementing processes that facilitated the delivery of a high quality service (e.g., engaging appropriately qualified, and encouraging additional training and clinical support for, mental health professionals; employing quality assurance mechanisms and clinical governance arrangements) and establishment of inter-agency linkages (e.g., devoting a professional role—Coordination and Liaison—to this purpose). Provider perspectives suggest that the CMHS has had a positive impact on children and their families. Comparable countries implementing primary mental health programs for children may benefit from considering similar additional supports (e.g., training for mental health professionals), resources (e.g., funding positions devoted to fostering service inter-agency linkages) and service delivery flexibilities as those available in the CMHS.