Concepts as Pluralistic Hybrids

In contrast to earlier views that argued for a particular kind of concept (e.g. prototypes), several recent accounts have proposed that there are multiple distinct kinds of concepts, or that there is a plurality of concepts for each category. In this paper, I argue for a novel account of concepts as pluralistic hybrids. According to this view, concepts are pluralistic because there are several concepts for the same category whose use is heavily determined by context. In addition, concepts are hybrids because they typically link together several different kinds of information that are used in the same cognitive processes. This alternative view accounts for the available empirical data, allows for greater cognitive flexibility than Machery's recent account, and overcomes several objections to traditional hybrid views.     

The Short Form of the Revised Almost Perfect Scale

We created a shorter and more refined item set from the Almost Perfect Scale–Revised (APS–R; Slaney, Mobley, Trippi, Ashby, & Johnson, 1996; Slaney, Rice, Mobley, Trippi, & Ashby, 2001) to measure 2 major dimensions of perfectionism: standards (high performance expectations) and discrepancy (self-critical performance evaluations). In Study 1, after testing the internal structure of the measure (N = 749), a subset of the current APS–R items was derived (Short Almost Perfect Scale [SAPS]) that possessed good psychometric features, such as strong item–factor loadings, score reliability, measurement invariance between women and men, and criterion-related validity through associations with neuroticism, conscientiousness, academic performance, and depression. Controlling for neuroticism and conscientiousness, factor mixture modeling supported a 2-factor, 3-class model of perfectionism, and results were consistent with labeling the classes as nonperfectionists and adaptive and maladaptive perfectionists. Measurement results were cross-validated in a separate sample (N = 335). Study 2 also provided substantial evidence for the convergent, discriminant, and criterion-related validity of SAPS scores. Both studies supported the SAPS as a brief and psychometrically strong measure of major perfectionism factors and classes of perfectionists.     

Positive affective processes underlie positive health behaviour change

Positive health behaviours such as physical activity can prevent or reverse many chronic conditions, yet a majority of people fall short of leading a healthy lifestyle. Recent discoveries in affective science point to promising approaches to circumvent barriers to lifestyle change. Here, we present a new theoretical framework that integrates scientific knowledge about positive affect with that on implicit processes. The upward spiral theory of lifestyle change explains how positive affect can facilitate long-term adherence to positive health behaviours. The inner loop of this spiral model identifies nonconscious motives as a central mechanism of behavioural maintenance. Positive affect experienced during health behaviours increases incentive salience for cues associated with those behaviours, which in turn, implicitly guides attention and the everyday decisions to repeat those behaviours. The outer loop represents the evidence-backed claim, based on Fredrickson’s broaden-and-build theory, that positive affect builds a suite of endogenous resources, which may in turn amplify the positive affect experienced during positive health behaviours and strengthen the nonconscious motives. We offer published and preliminary evidence in favour of the theory, contrast it to other dominant theories of health behaviour change, and highlight attendant implications for interventions that merit testing.     

Cross-Cultural Measurement of Positive and Negative Emotions in Adolescence: Evidence from Three Countries

Journal of Happiness Studies - Cross-cultural assessment of affective well-being among adolescents has received scarce attention in positive psychological research. The present study investigated...     

Using system-wide trust theory to make predictions about dependence on four diagnostic aids

System-wide trust strategy can occur when operators are exposed to multiple aids of different reliabilities. D. Keller and S. Rice (2009) showed that when a perfectly reliable aid was presented concurrently with an unreliable aid, participants tended to treat the 2 aids as a unit (system-wide trust) rather than as different units with different reliabilities (component-specific trust). Limitations to their original study prevented the authors from making strong conclusions about a pervasive system-wide trust strategy across domains. The current study revisits this theoretical issue by increasing the number of aids, manipulating the amount of information and feedback participants were given, and using a single-task paradigm rather than a dual-task paradigm. Results were conclusive. While providing information and feedback were beneficial to overall performance, dependence measures indicated that system-wide trust strategies were pervasive across almost all of the manipulations. We discuss the theoretical and applied implications of these data.     

Development of a Defense Mechanisms Manual for Children’s Doll Play (DMCP)

Researchers have long recognized the richness of children’s fantasy play and the ability of such play to reveal children’s inner worlds and defensive structures. This article describes the development of The Defense Mechanisms Manual for Children’s Doll Play (DMCP), a detailed and comprehensive manual that codes for 32 defense mechanisms in children’s play. The levels of narrative coherence, creativity, and aggression in play narratives are also assessed. The manual draws on contemporary dream theory using the premise that the child narrator will disguise anxiety-provoking impulses through a number of defenses that can be discerned through the choices the child makes in creating the plot of the story. The manual was developed through the analysis of 30 sets of 10 story stems collected from 5- and 6-year-old children using the MacArthur Story Stem Battery, a structured story-completion task. Inter-rater reliability varied with the frequency of occurrence for each defense, ranging from excellent reliability for some measures to too few cases to assess for others. Cluster analyses of measures suggested four main clusters, loosely conceptualized as connecting to others, channeling aggression, avoidance, and symbolization.