Temporal stability of the Czech translation of the Satisfaction with Life Scale: test-retest data over one week

The present study supplemented the limited 1999 psychometric data by Lewis, et al. on the Czech translation of the Satisfaction With Life Scale by examining the temporal stability of the measure over a 1-wk. period for 64 Czech undergraduate university students. Analysis indicated stability across the two administrations was very high (r=.90), and there was no significant change between Time 1 (M=23.7, SD=5.1) and Time 2 (M=24.1, SD=5.5). Short-term test-retest reliability of this Czech translation is supported.     

Perceptual similarity in autism

People with autism have consistently been found to outperform controls on visuo-spatial tasks such as block design, embedded figures, and visual search tasks. Plaisted, O'Riordan, and others (Bonnel et al., 2003; O'Riordan & Plaisted, 2001; O'Riordan, Plaisted, Driver, & Baron-Cohen, 2001; Plaisted, O'Riordan, & Baron-Cohen, 1998a, 1998b) have suggested that these findings might be explained in terms of reduced perceptual similarity in autism, and that reduced perceptual similarity could also account for the difficulties that people with autism have in making generalizations to novel situations. In this study, high-functioning adults with autism and ability-matched controls performed a low-level categorization task designed to examine perceptual similarity. Results were analysed using standard statistical techniques and modelled using a quantitative model of categorization. This analysis revealed that participants with autism required reliably longer to learn the category structure than did the control group but, contrary to the predictions of the reduced perceptual similarity hypothesis, no evidence was found of more accurate performance by the participants with autism during the generalization stage. Our results suggest that when all participants are attending to the same attributes of an object in the visual domain, people with autism will not display signs of enhanced perceptual similarity.     

Recognizing face identity from natural and morphed smiles

It is easier to identify a degraded familiar face when it is shown moving (smiling, talking; nonrigid motion), than when it is displayed as a static image (Knight & Johnston, 1997; Lander, Christie, & Bruce, 1999). Here we explore the theoretical underpinnings of the moving face recognition advantage. In Experiment 1 we show that the identification of personally familiar faces when shown naturally smiling is significantly better than when the person is shown artificially smiling (morphed motion), as a single static neutral image or as a single static smiling image. In Experiment 2 we demonstrate that speeding up the motion significantly impairs the recognition of identity from natural smiles, but has little effect on morphed smiles. We conclude that the recognition advantage for face motion does not reflect a general benefit for motion, but suggests that, for familiar faces, information about their characteristic motion is stored in memory.     

Infants' categorization of novel objects with more or less obvious features

In five experiments, 14- to 15-month-old infants' categorization of objects on the basis of more or less obvious features was investigated. Using an object examining paradigm, a total of 200 infants were familiarized with novel objects that shared either more obvious features (i.e., easily visible) or less obvious features (i.e., accessible by lifting a flap), followed by an in-category object and an out-of-category object. When only perceptual information was available, infants formed a category on the basis of the more obvious features but not on the basis of the less obvious features (Experiments 1 and 3). When infants were provided with animacy cues and/or object names, they formed categories on the basis of either more or less obvious features (Experiments 2, 4, and 5). The results of these studies delineate the role of animacy cues and object names in establishing categories on the basis of less obvious features.     

Self-esteem and organization of valenced information about others: the "Jekyll and Hyde"-ing of relationship partners

The authors theorize that individuals with high self-esteem functionally integrate positive and negative partner information in memory, whereas those low in self-esteem segregate such information. The authors obtained support for this view in 7 studies. In a first set, participants judged whether positive and negative traits presented in an alternating or nonalternating order applied to a partner. Low but not high self-esteem individuals were slowed by the alternating order when judging relationship partners (but not inanimate objects). In a 2nd set, participants answered questions tapping integrated thinking, self-esteem, and other attributes. Higher self-esteem was associated with more integrated thinking when other attributes were controlled. In a final study, anxiously attached individuals were more labile in rating their spouse over a 5-day period.     

Incremental validity of the MMPI-2 Restructured Clinical (RC) scales in a private practice sample

Building on results reported in Sellbom, Graham, and Schenk (2005), in this study, we examined the incremental validity of the newly introduced MMPI-2 (Butcher et al., 2001) Restructured Clinical (RC) scales (Tellegen et al., 2003) over both the Clinical and Content scales. Participants were 647 clients in private practice who were administered the MMPI-2 and the Multiaxial Diagnostic Inventory (Doverspike, 1990) early in therapy. The results indicate that the RC scales had acceptable internal consistency, reduced intercorrelations (compared to the Clinical scales), and promising convergent and discriminant validity. Hierarchical regression analyses revealed that the RC scales added incrementally to both the Clinical and Content scales in predicting self reported clinical symptoms. These findings suggest that the RC scales are relatively homogenous measures of core clinical constructs that can add unique information to the understanding of private practice clients above and beyond the Clinical and Content scales.     

Reasoning, emotions, and delusional conviction in psychosis

The aim of the study was to elucidate the factors contributing to the severity and persistence of delusional conviction. One hundred participants with current delusions, recruited for a treatment trial of psychological therapy (PRP trial), were assessed at baseline on measures of reasoning, emotions, and dimensions of delusional experience. Reasoning biases (belief inflexibility, jumping to conclusions, and extreme responding) were found to be present in one half of the sample. The hypothesis was confirmed that reasoning biases would be related to delusional conviction. There was evidence that belief inflexibility mediated the relationship between jumping to conclusions and delusional conviction. Emotional states were not associated with the reasoning processes investigated. Anxiety, but not depression, made an independent contribution to delusional conviction.     

Preschoolers' extension of familiar adjectives

In two experiments, we examined the role of labels in guiding preschoolers' extension of three types of familiar adjectives: emotional state adjectives, physiological state adjectives, and trait adjectives. On each trial, we labeled a target animal with one of the three different types of adjectives and asked whether these terms could apply to a subordinate-level match, a basic-level match, a superordinate-level match, or an inanimate object. In Experiment 1, participants extended trait adjectives, but not emotional or physiological adjectives, to members of the same basic-level category, regardless of whether an explicit basic-level label was provided for the target animal. Similarly, children in Experiment 2 also extended trait adjectives to the members of the same basic-level category, even when explicit superordinate- and subordinate-level labels were provided for the target animals. Together, these results demonstrate that children appreciate that emotional and physiological adjectives cannot be generalized to the same extent as can trait adjectives, and the results document the privileged status of basic-level categories in preschoolers' extension of trait adjectives.