The right tool for the job: what strategies do wild New Caledonian crows use?

New Caledonian crows Corvus moneduloides (NC crows) display sophisticated tool manufacture in the wild, but the cognitive strategy underlying these skills is poorly understood. Here, we investigate what strategy two free-living NC crows used in response to a tool-length task. The crows manufactured tools to extract food from vertical holes of different depths. The first tools they made in visits were of a similar length regardless of the hole depth. The typical length was usually too short to extract food from the deep holes, which ruled out a strategy of immediate causal inference on the first attempt in a trial. When the first tool failed, the crows made second tools significantly longer than the unsuccessful first tools. There was no evidence that the crows made the lengths of first tools to directly match hole depth. We argue that NC crows may generally use a two-stage heuristic strategy to solve tool problems and that performance on the first attempt in a trial is not necessarily the ‘gold standard’ for assessing folk physics.This contribution is part of the special issue ‘Animal Logics’ (Watanabe and Huber 2006).     

Letting a little nonverbal air into the room: Insights from acceptance and commitment therapy Part 1: Philosophical and theoretical underpinnings

In recent years, a new “wave” of mindfulness based Cognitive Behavior Therapies (CBT) has become popular. Such approaches include Acceptance and Commitment Therapy (ACT; Acceptance and commitment therapy: An experiential approach to behaviour change. New York: Guilford Press, 1999), Mindfulness-based Cognitive Therapy for Depression (Mindfulness-based cognitive therapy for depression: A new approach to preventing relapse. New York: Guilford Press, 2002), and Mindfulness-based Stress Management (Full catastrophe living: using the wisdom of your body and mind to face stress, pain, and illness. New York: Dell Publishing, 1990). In contrast to traditional CBT, these approaches often minimize attempts to change the form and frequency of dysfunctional thoughts. Is there any way to integrate traditional CBT with mindfulness based CBT? To answer this question, we discuss the philosophical and theoretical underpinnings of one form of traditional CBT (Rational-Emotive and Cognitive Behavioral Therapy) and one form of mindfulness based CBT (ACT). We argue that some aspects of each therapy can be integrated. However, in order to prevent techniques from being used haphazardly or inconsistently, we suggest that the different forms of CBT need to be driven by a common philosophical orientation (e.g., functional contextualism) and theoretical orientation (e.g., Relational Frame Theory).     

LETTING A LITTLE NONVERBAL AIR INTO THE ROOM: INSIGHTS FROM ACCEPTANCE AND COMMITMENT THERAPY PART 2: APPLICATIONS

Acceptance and Commitment Therapy (ACT) and Rational-Emotive Behavior Therapy (REBT) seem to have much in common. For example, they both seek to increase client’s willingness to accept inevitable, unpleasant experience. However, the techniques the therapies use to increase acceptance are often quite different. Building on the philosophical and theoretical framework presented in the previous paper, we discuss the major practical differences between ACT and REBT. We then suggest some concrete ways that the two approaches can be integrated. Such integration may greatly expand the sorts of techniques that a therapist can effectively use in the therapy room. Address correspondence to Joseph Ciarrochi, Department of Psychology, University of Wollongong, Wollongong, NSW 2522, Australia     

The origins of deference: when do people prefer lower status?

Although the desire for high status is considered universal, prior research suggests individuals often opt for lower status positions. Why would anyone favor a position of apparent disadvantage? In 5 studies, we found that the broad construct of status striving can be broken up into two conceptions: one based on rank, the other on respect. While individuals might universally desire high levels of respect, we find that they vary widely in the extent to which they strive for high-status rank, with many individuals opting for middle- or low-status rank. The status rank that individuals preferred depended on their self-perceived value to the group: when they believed they provided less value, they preferred lower status rank. Mediation and moderation analyses suggest that beliefs about others' expectations were the primary driver of these effects. Individuals who believed they provided little value to their group inferred that others expected them to occupy a lower status position. Individuals in turn conformed to these perceived expectations, accepting lower status rank in such settings.     

Flustered and faithful: embarrassment as a signal of prosociality

Although individuals experience embarrassment as an unpleasant, negative emotion, the authors argue that expressions of embarrassment serve vital social functions, signaling the embarrassed individual's prosociality and fostering trust. Extending past research on embarrassment as a nonverbal apology and appeasement gesture, the authors demonstrate that observers recognize the expression of embarrassment as a signal of prosociality and commitment to social relationships. In turn, observers respond with affiliative behaviors toward the signaler, including greater trust and desire to affiliate with the embarrassed individual. Five studies tested these hypotheses and ruled out alternative explanations. Study 1 demonstrated that individuals who are more embarrassable also reported greater prosociality and behaved more generously than their less embarrassable counterparts. Results of Studies 2-5 revealed that observers rated embarrassed targets as being more prosocial and less antisocial relative to targets who displayed either a different emotion or no emotion. In addition, observers were more willing to give resources and express a desire to affiliate with these targets, and these effects were mediated by perceptions of the targets as prosocial.     

Assessment of self and others during treatment for anorexia nervosa

Abstract

Repertory grids were used to compare a group of anorexic women (n = 12) with normal-weight (n = 12) and dieting (n = 10) control groups. Anorexics differed from both control groups in their perceptions of themselves and others. The constructs used were more meaningful to anorexics than to either control group. The way in which anorexics saw themselves differed from the way in which clinicians have indicated in the literature that they see their anorexic patients. Some constructs adopted a differential meaning and relevance for observer and observed when applied to the anorexic condition. The discrepancies between internally defined and externally imposed interpretations of construct meaning may help to explain why resistance to treatment and high relapse rates are encountered in anorexic women.     

A Sense of Powerlessness Fosters System Justification: Implications for the Legitimation of Authority,Hierarchy, and Government

In an attempt to explain the stability of hierarchy, we focus on the perspective of the powerless and how a subjective sense of dependence leads them to imbue the system and its authorities with legitimacy. In Study 1, we found in a nationally representative sample of U.S. employees that financial dependence on one's job was positively associated with the perceived legitimacy of one's supervisor. In Study 2, we observed that a general sense of powerlessness was positively correlated with the perceived legitimacy of the economic system. In Studies 3 and 4, priming experimental participants with feelings of powerlessness increased their justification of the social system, even when they were presented with system‐challenging explanations for race, class, and gender disparities. In Study 5, we demonstrated that the experience of powerlessness increased legitimation of governmental authorities (relative to baseline conditions). The processes we identify are likely to perpetuate inequality insofar as the powerless justify rather than strive to change the hierarchical structures that disadvantage them.