Idealness and similarity in goal-derived categories: A computational examination

The finding that the typicality gradient in goal-derived categories is mainly driven by ideals rather than by exemplar similarity has stood uncontested for nearly three decades. Due to the rather rigid earlier implementations of similarity, a key question has remained—that is, whether a more flexible approach to similarity would alter the conclusions. In the present study, we evaluated whether a similarity-based approach that allows for dimensional weighting could account for findings in goal-derived categories. To this end, we compared a computational model of exemplar similarity (the generalized context model; Nosofsky, Journal of Experimental Psychology. General 115:39–57, 1986) and a computational model of ideal representation (the ideal-dimension model; Voorspoels, Vanpaemel, & Storms, Psychonomic Bulletin & Review 18:1006-114, 2011) in their accounts of exemplar typicality in ten goal-derived categories. In terms of both goodness-of-fit and generalizability, we found strong evidence for an ideal approach in nearly all categories. We conclude that focusing on a limited set of features is necessary but not sufficient to account for the observed typicality gradient. A second aspect of ideal representations—that is, that extreme rather than common, central-tendency values drive typicality—seems to be crucial.     

To be in touch

This study examined the constellation of interaction structures – repetitive patterns of interactions between patient and therapist over the course of treatment – that emerged in the psychodynamic therapy (PDT) of a child diagnosed with borderline personality disorder and treated by two doctoral student therapists. Identification of these interaction structures can inform therapists of what might be expected from patients with particular symptom or behaviour patterns and how interactions change over time. This study also examined each session’s adherence to three session prototypes: PDT, cognitive-behavioural therapy (CBT) and reflective functioning (RF) process. The Child Psychotherapy Q-Set (CPQ) is a 100-item instrument that assesses the processes within a single psychotherapy session. Items reflect a wide range of therapist attitudes and behaviours, patient attitudes and behaviours and interactions between therapist and patient. Experts used the CPQ to define PDT, CBT and RF process session prototypes. The results suggested that four distinct interaction structures could be identified and that their constellations differed between the two therapists and also differed over time within each treatment. Therapists were more structured and accommodating early on in their treatments and more interpretive later. Prototypical PDT process was more prominent in the sessions than RF process, which in turn was more prominent than CBT process. Unique therapeutic processes are at work in every dyad, despite holding the patient and theoretical orientation constant. An effective treatment in one dyad might not work in another due to therapist-specific and dyad-specific effects.     

A meta-analytic review of the Dark Triad–intelligence connection

We conducted a meta-analytic review of the relations between general mental ability (GMA) and the Dark Triad (DT) personality traits—Machiavellianism, narcissism, and psychopathy—to determine if individuals who display socially exploitative social qualities tend to be more intelligent or less intelligent. Across 48 independent samples, GMA showed no consistent relation with any DT trait. These effects were not sufficient to support either the “evil genius” hypothesis (highly intelligent individuals tend to display socially exploitative personality traits) or the “compensatory” hypothesis (less intelligent individuals compensate for their cognitive disadvantages by adopting manipulative behavioral tendencies). However, these relations were moderated, to some extent, by the sex and age of the participants, type of sample studied, and the measure of GMA.     

Chisholm's Epistemic Principles

Abstract: An exposition and discussion of Chisholm's “epistemic principles.” These are compared with relevant views of Wilfrid Sellars and Richard Foley. A further comparison, with the approach favored by Descartes, is argued to throw light on the status of such principles.     

Talking Circles: A Native American Approach to Experiential Learning

Talking circles, as a unique instructional approach, can be used to stimulate multicultural awareness while fostering respect for individual differences and facilitating group cohesion. A brief history of the talking circle is followed by detailed instructions, talking circle process questions, ideas for classroom discussion after the activity, and teaching strategies. Círculos de conversación, como un método singular de pedagogía, se puede utilizar para estimular consciencia multicultural, mientras a la vez promueve el respeto para las diferencias individuales, y facilita cohesión grupal. Le sigue a una breve historia del círculo de conversación unas instrucciones detalladas, preguntas para procesar el círculo, ideas para discusión en clase despues de la actividad, y estrategias pedagógicas.     

Are There Two Grades of Knowledge?

A response to Sosa's criticisms of Sellars's account of the relation between knowledge and experience, noting that Sellars excludes merely animal knowledge, and hopes to bypass epistemology by an adequate philosophy of mind and language.