Evidence for an age-independent process in category learning

After learning to categorize a set of alien-like stimuli in the context of a story, a group of 5-year-old children and adults judged pairs of stimuli from different categories to be less similar than did groups not learning the category distinction. In a same-different task, the learning group made more errors on pairs of non-identical stimuli from the same category than did the other groups, suggesting increased within-category item similarity, or compression. These expansion and compression effects add further support to the view that concept formation involves systematic changes in the metric of similarity space within which objects are represented. They also suggest that these processes do not vary with age, which is at least consistent with the hypothesis that they are fundamental to the mechanisms underlying concept formation.     

Adaptationism--how to carry out an exaptationist program

Adaptationism is a research strategy that seeks to identify adaptations and the specific selective forces that drove their evolution in past environments. Since the mid-1970s, paleontologist Stephen J. Gould and geneticist Richard Lewontin have been critical of adaptationism, especially as applied toward understanding human behavior and cognition. Perhaps the most prominent criticism they made was that adaptationist explanations were analogous to Rudyard Kipling's Just So Stories (outlandish explanations for questions such as how the elephant got its trunk). Since storytelling (through the generation of hypotheses and the making of inferences) is an inherent part of science, the criticism refers to the acceptance of stories without sufficient empirical evidence. In particular, Gould, Lewontin, and their colleagues argue that adaptationists often use inappropriate evidentiary standards for identifying adaptations and their functions, and that they often fail to consider alternative hypotheses to adaptation. Playing prominently in both of these criticisms are the concepts of constraint, spandrel, and exaptation. In this article we discuss the standards of evidence that could be used to identify adaptations and when and how they may be appropriately used. Moreover, building an empirical case that certain features of a trait are best explained by exaptation, spandrel, or constraint requires demonstrating that the trait's features cannot be better accounted for by adaptationist hypotheses. Thus, we argue that the testing of alternatives requires the consideration, testing, and systematic rejection of adaptationist hypotheses. Where possible, we illustrate our points with examples taken from human behavior and cognition.     

Young children's performance on the balance scale: the influence of relational complexity

Three experiments investigated the effect of complexity on children's understanding of a beam balance. In nonconflict problems, weights or distances varied, while the other was held constant. In conflict items, both weight and distance varied, and items were of three kinds: weight dominant, distance dominant, or balance (in which neither was dominant). In Experiment 1, 2-year-old children succeeded on nonconflict-weight and nonconflict-distance problems. This result was replicated in Experiment 2, but performance on conflict items did not exceed chance. In Experiment 3, 3- and 4-year-olds succeeded on all except conflict balance problems, while 5- and 6-year-olds succeeded on all problem types. The results were interpreted in terms of relational complexity theory. Children aged 2 to 4 years succeeded on problems that entailed binary relations, but 5- and 6-year-olds also succeeded on problems that entailed ternary relations. Ternary relations tasks from other domains--transitivity and class inclusion--accounted for 93% of the age-related variance in balance scale scores.     

Meeting Survivors Where They Are: The Vital Role of Trauma-Informed and Competent Clinicians in Primary Care

For adult survivors of adverse childhood experiences, primary care is the entryway to treatment of post-traumatic stress disorder (PTSD). It is estimated 25% of adult primary care patients have PTSD, and they present to their provider more often with pain and non-specific physical symptoms rather than mental health issues. Physicians, even those somewhat knowledgeable about trauma and PTSD, are unlikely to assess for it in order to avoid issues they may not have the time and/or skills to sufficiently address. This is due to PTSD treatment not being a core training competency in graduate-level education and professional training being timely and expensive. Usual care for PTSD consists of medication to manage symptoms and a referral to a mental health clinician. However, substantial disparities and patient, provider, and delivery system-level barriers means survivors are unlikely to follow-through with referrals nor receive adequate treatment when they do. In this theoretical article, we review the trials and tribulations experienced by research teams and argue what is lacking is trauma-informed care. None of the trials reviewed mentioned trauma-informed care as a component of their intervention nor as a recommendation for future studies. We also outline a host of recommendations for best practice protocols that benefit patients and the collaborative care teams meeting them where they are. Trauma-informed care deepens the focus on relational, physiological, and physical safety. Attention to soothing physiological arousal through the physician-patient-clinician triad creates more positive associations toward moving forward in treatment for survivors and providers.     

Social learning in captive African elephants (Loxodonta africana africana)

Social learning is a more efficient method of information acquisition and application than trial and error learning and is prevalent across a variety of animal taxa. Social learning is assumed to be important for elephants, but evidence in support of that claim is mostly anecdotal. Using a herd of six adult female African bush elephants (Loxodonta africana africana) at the San Diego Zoo’s Safari Park, we evaluated whether viewing a conspecific’s interactions facilitated learning of a novel task. The tasks used feeding apparatus that could be solved in one of two distinct ways. Contrary to our hypothesis, the method the demonstrating animal used did not predict the method used by the observer. However, we did find evidence of social learning: After watching the model, subjects spent a greater percentage of their time interacting with the apparatus than they did in unmodeled trials. These results suggest that the demonstrations of a model may increase the motivation of elephants to explore novel foraging tasks.     

Bilinguals' memory for medical information: Effects of modality,type of information and order of information

Abstract

The purpose of this study was to discover whether late bilinguals and monolmguals respond differently to memory tasks about information patainins to naturalistic but simulated medical consultations. The sample comprised 24 Italian/English late bilinguals and 24 English speaking monolinguals. Thne medical information texts were presented to subjects in either the oral or the written modality. Type of information (diagnostic or treatment). and order of presentation (first or last) of type of information were also manipulated. Subjects performed a word stem completion (WSC) task, followed by a he mall task. Overall, bilinguals recalled less information than the monolinguals, and were less likely to respond with an old word in the WSC task Bilinguals were more adversely affected by the order of presentation of treatment information than were monolinguals, remembering less treatment information when it occurred last. Both groups remembered information presented first better than information presented last, with treatment information slightly better remembered than diagnostic. No modality of presentation effects wen found Implications for compliance behaviours are discussed.

Medical information

bilingual

memory.     

Relations Among Children's Coping Strategies and Anxiety: The Mediating Role of Coping Efficacy

The current study tests a model that depicts the relationships among coping strategies (active, distraction, avoidance, and support seeking) and anxiety symptoms. SEM is used to test if the relationship between these variables is mediated by coping efficacy. A large sample of Canadian children (N = 506) aged 8 to 11 years (boys = 249, girls = 245, unknown gender = 12) participated in the study. Results showed that coping efficacy is a partial mediator of the relations between active coping strategies and anxiety symptoms, however support was not found for it to be an effective mediator for other coping strategies. This study contributes to the understanding of childhood anxiety by highlighting the importance of the relationship between anxiety and the methods children use to cope with stress and how perceptions of their coping abilities influence this relationship.