Corvid caching: Insights from a cognitive model

Caching and recovery of food by corvids is well-studied, but some ambiguous results remain. To help clarify these, we built a computational cognitive model. It is inspired by similar models built for humans, and it assumes that memory strength depends on frequency and recency of use. We compared our model's behavior to that of real birds in previously published experiments. Our model successfully replicated the outcomes of two experiments on recovery behavior and two experiments on cache site choice. Our "virtual birds" reproduced declines in recovery accuracy across sessions, revisits to previously emptied cache sites, a lack of correlation between caching and recovery order, and a preference for caching in safe locations. The model also produced two new explanations. First, that Clark's nutcrackers may become less accurate as recovery progresses not because of differential memory for different cache sites, as was once assumed, but because of chance effects. And second, that Western scrub jays may choose their cache sites not on the basis of negative recovery experiences only, as was previously thought, but on the basis of positive recovery experiences instead. Alternatively, both "punishment" and "reward" may be playing a role. We conclude with a set of new insights, a testable prediction, and directions for future work.     

Anxiety,Immigration, and the Search for Information

In this article, we use the issue of immigration to explore the role of anxiety in responses to political appeals. According to previous literature, anxiety motivates citizens to learn and pay more attention to news coverage. Literature in psychology demonstrates that anxiety is associated with a tendency to pay closer attention to threatening information. We predict that anxious citizens will seek more information but that they will seek out and be attracted to threatening information. In an experiment, we induce anxiety about immigration and then subjects have the opportunity to search for additional information in a website designed to mimic online news sources. The website has both immigration and nonimmigration stories, and the immigration stories are split between threatening coverage and nonthreatening coverage. We find that anxious subjects exhibit biased information processing; they read, remember, and agree with threatening information.     

An internet survey of emotional health,treatment seeking and barriers to accessing mental health treatment among Chinese-speaking international students in Australia

The present internet survey examined the demographic characteristics of Chinese-speaking international students in Australia, psychological distress levels as measured by the Kessler-10 (K-10) Item scale, help-seeking history and preferences, as well as treatment barriers. Of the 144 respondents, 54% reported high psychological distress (mean K-10 score?=?23.96; SD?=?9.03). However, only 9% of those who were highly distressed reported they had sought mental health services in the past year. While the majority preferred help from informal social networks, they tended to favour mental health services over traditional culture-specific forms of help. Common barriers to accessing mental health services reported by respondents with high psychological distress included costs or transportation concerns, limited knowledge of available services, time constraints, the perception that symptoms were not severe enough to warrant treatment, language difficulties and lack of knowledge of symptoms of psychological distress. Although the majority preferred face-to-face treatments over internet treatments, a considerable percentage of respondents were willing to try either treatment modality. Chinese-speaking international students are a high risk group for developing psychological distress, yet they tend to underuse mental health services. Education about the effectiveness of face-to-face and online treatments may increase treatment seeking by this population.     

Augmenting treatment efficiency in exposure therapy for PTSD: a randomized double-blind placebo-controlled trial of yohimbine HCl

The alpha-2 adrenergic receptor antagonist, yohimbine, can facilitate fear extinction in animals and humans. One potential mechanism is increased noradrenergic activity and associated arousal in the presence of conditioned stimuli. Accordingly, yohimbine might augment prolonged exposure (PE) therapy for posttraumatic stress disorder (PTSD), where heightened exposure-oriented arousal is a theorized driver and empirical predictor of treatment success. A double-blind placebo-controlled randomized trial (NCT 01031979) piloted yohimbine augmentation in 26 males with combat-related PTSD. Participants were given one-time dose of yohimbine or placebo prior to the first imaginal exposure. Subsequently, both arms completed standard PE. The primary outcome was trauma-cued heart-rate reactivity a week after the drug/exposure visit, a highly specified, objective measure sensitive to incremental change. Secondary outcomes included arousal during the drug/exposure visit and slope of distress, PTSD, and depression over the course of PE. Consistent with hypothesis, yohimbine led to higher objective and subjective arousal during the drug/exposure visit and to lower trauma-cued heart-rate reactivity one-week later. One dose of yohimbine also led to greater between-session habituation and more rapid improvement on depression, but not PTSD, over the course of care. Results of this controlled pilot indicate support for continued investigation of yohimbine-augmented exposure therapy for PTSD.     

Disclosure of anxiety in everyday life: Effects of social anxiety

The current study examined the likelihood of disclosing one’s anxiety to others during anxiety-provoking conversations, as reported by individuals high or low in social anxiety. It investigated to whom these disclosures are made, and the content and intended purposes of these disclosures. Undergraduate students and community members low (n = 79) or high (n = 81) in social anxiety completed the Anxiety Disclosure in Everyday Life questionnaire, as well as several other measures as part of another study. Analyses indicated that individuals high in social anxiety were significantly less likely to disclose their anxiety as compared to individuals low in social anxiety. The likelihood of disclosing one’s anxiety varied significantly depending on to whom one was speaking, with intimate partners being disclosed to the most. The content of the disclosures typically involved stating that one is feeling shy or nervous without offering an explanation, or attributing it to one’s personality traits (e.g., shyness), with the intended purpose often being to elicit assistance or reassurance from their conversation partner or to manage the impressions of others.     

From Good to Great: Examining Exemplary Counselor Development

Some counselors excel in the profession. Few do so while maintaining a balance in life. This article examines the life of one such individual, Samuel T. Gladding. He models for counselors an aspirational process of making significant contributions to the profession while staying personally grounded. Qualities that propel professionals like Gladding from being good as a young professional into prominence as a mature counselor are examined.     

Examining the Construct Validity of Mastery-Avoidance Achievement Goals: A Meta-Analysis

We used meta-analysis to obtain a comprehensive perspective on the construct validity of achievement goals, focusing on the most recent addition to the achievement goal framework, mastery-avoidance (Elliot & McGregor, 2001). Mastery-avoidance achievement goals positively correlated with need for achievement, perceived competence, competitiveness, interest, negative affect, and other achievement goals (mastery-approach, performance-approach, performance-avoidance) and negatively correlated with cognitive ability, help seeking, and performance. The correlations between mastery-avoidance and the other achievement goals were moderate. Thus, we conclude that mastery-avoidance is a conceptually and empirically distinct construct with unique antecedents and consequences and should be included in future studies on achievement goals.     

Continuity in Representation Between Children and Adults: Arithmetic Knowledge Hinders Undergraduates' Algebraic Problem Solving

This study examined if solving arithmetic problems hinders undergraduates' accuracy on algebra problems. The hypothesis was that solving arithmetic problems would hinder accuracy because it activates an operational view of equations, even in educated adults who have years of experience with algebra. In three experiments, undergraduates (N = 184) solved addition facts or participated in one of several control conditions. Those who solved addition facts were less likely to solve prealgebra equations (e.g., 6 + 8 +4 = 7 + __) correctly under speeded conditions. In a fourth experiment, the negative effects of solving arithmetic problems extended to undergraduates (N = 74) solving algebra problems with no time pressure. Taken together, results suggest that arithmetic activates knowledge that hinders performance on algebra problems. Thus, an operational view of equations, which is prevalent in children, does not seem to be revised or abandoned, even after years of experience with algebra.     

Going Home Again: Transitioning Youth to Families After Group Care Placement

This paper presents results from the transitioning youth to families intervention, which aimed to promote family care for youth served in group care programs in the child welfare system. The intervention was conducted in two counties in a Mid-Atlantic state. The effort encompassed administrative case review and family involvement meetings. We assessed the effect of the intervention in promoting placement in family settings within 12 months. We also explored other effects of the intervention identified by participants. Using propensity score matching with administrative data to compare one-year placement settings for the intervention counties and non-intervention counties, a higher rate of family reunification was identified for youth in the treatment counties. To provide a richer contextual understanding of the effects of the intervention, thematic analysis of open-ended comments from youth and caregiver participants was conducted. These resulting themes provided further understanding of the value of the intervention especially in the areas of planning for the transition, improving youth insight about placement options, and the importance of family involvement. Participants also made recommendations for how to enhance the intervention and promote the transition of youth from group care to family settings. Overall, the effect of the intervention in transitioning youth to family settings was nominal; however unanticipated benefits of engaging youth and family in the transition process were noted. From this evaluation, we provide suggestions for future research and the development of effort to transition youth from group care settings.