A longitudinal SEM approach to STAI data:two comprehensive multitrait-multistate models

I investigated psychometric properties of data gathered with the State-Trait Anxiety Inventory (STAI; Spielberger, Gorsuch, Lushene, Vagg, & Jacobs, 1983, 1993) using structural equation modeling. Two features were integrated into the modeling: Bistability refers to the duality that is raised once the wording effect is recognized, and second-order, state-residual/trait decomposition refers to the basic bidimensionality of the data, which is revealed in a longitudinal perspective. I tested the approach on 2 samples of French adults (total N = 888) borrowed from Vautier and Jmel (2003). The models provided acceptable goodness of fit and supported the empirical need for hypothesizing 2 trait factors and 4 transient sources of true variance. I assessed the multidimensional composition of the composites using reliability analyses. I discuss theoretical consequences of the approach.     

Rorschach personality predictors of weight loss with behavior modification in obesity treatment

Weight loss outcome for 49 obese patients after 6 months treatment in a behavior modification program was related to Rorschach personality characteristics according to the Comprehensive System (Exner, 2003), also including the Rorschach Oral Dependency Scale (Bornstein, 1996; Masling & Rabie, 1967). Less weight loss was predicted by signs of perceptual and cognitive distortions indicated by the Schizophrenia Index. More weight loss was predicted by Food Contents, suggesting a food preoccupation and possibly a benign dependency orientation. Patients with a focus on food and dependent needs could benefit above all from the treatment program implying learning how to handle food and eating in a supportive setting, as evidenced by more weight loss. Distortions in perception and cognition could constitute more profound difficulties in weight reduction important to recognize in obesity treatment.     

Trends and monthly variations in the historical record of suicide in Japan from 1976 to 1994

Monthly suicide rates in Japan were analyzed for the period from 1976 to 1994 to clarify trends and recurring effects. The data were separated by sex, and the least-squares method was used. The major findings were (1) a significant positive correlation between unemployment rate and suicide rate for both sexes, (2) the suicide rate was highest in April for both sexes, and (3) an upsurge in male suicide mortality was noted from 1983 to 1990. These findings may well be associated with socioeconomic factors as well as neurobehavioral variables.     

Ad hoc category restructuring

Participants learned to classify seemingly arbitrary words into categories that also corresponded to ad hoc categories (see, e.g., Barsalou, 1983). By adapting experimental mechanisms previously used to study knowledge restructuring in perceptual categorization, we provide a novel account of how experimental and preexperimental knowledge interact. Participants were told of the existence of the ad hoc categories either at the beginning or the end of training. When the ad hoc labels were revealed at the end of training, participants switched from categorization based on experimental learning to categorization based on preexperimental knowledge in some, but not all, circumstances. Important mediators of the extent of that switch were the amount of performance error experienced during prior learning and whether or not prior knowledge was in conflict with experimental learning. We present a computational model of the trade-off between preexperimental knowledge and experimental learning that accounts for the main results.     

Knowledge partitioning in categorization: Boundary conditions

Knowledge partitioning refers to the notion that knowledge can be held in independent and nonoverlapping parcels. Partitioned knowledge may cause people to make contradictory decisions for identical problems in different circumstances. We report two experiments that explored the boundary conditions of knowledge partitioning in categorization. The studies examined whether or not people would partition their knowledge (1) when categorization rules were or were not verbalizable and (2) when the to-be-categorized stimuli comprised perceptually separable or integral dimensions. When learning difficulty was controlled, partitioning occurred across all combinations of verbalizability and integrality/separability, underscoring the generality of knowledge partitioning. Partitioning was absent only when the task was rapidly learned and people reached a high level of proficiency, suggesting that task difficulty plays a critical role in the emergence of partitioned knowledge.     

Numeracy and decision making

A series of four studies explored how the ability to comprehend and transform probability numbers relates to performance on judgment and decision tasks. On the surface, the tasks in the four studies appear to be widely different; at a conceptual level, however, they all involve processing numbers and the potential to show an influence of affect. Findings were consistent with highly numerate individuals being more likely to retrieve and use appropriate numerical principles, thus making themselves less susceptible to framing effects, compared with less numerate individuals. In addition, the highly numerate tended to draw different (generally stronger or more precise) affective meaning from numbers and numerical comparisons, and their affective responses were more precise. Although generally helpful, this tendency may sometimes lead to worse decisions. The less numerate were influenced more by competing, irrelevant affective considerations. Analyses showed that the effect of numeracy was not due to general intelligence. Numerical ability appears to matter to judgments and decisions in important ways.     

Effects of emotional arousal on multiple memory systems: evidence from declarative and procedural learning

Extensive evidence documents emotional modulation of hippocampus-dependent declarative memory in humans. However, little is known about the emotional modulation of striatum-dependent procedural memory. To address how emotional arousal influences declarative and procedural memory, the current study utilized (1) a picture recognition and (2) a weather prediction (WP) task (a probabilistic classification learning task), which have been shown to rely on hippocampal- and striatum-based memory systems, respectively. Observers viewed arousing or neutral pictures after (Experiment 1) or during (Experiment 2) WP training trials. A 1-wk delayed picture recognition memory test revealed enhanced declarative memory for arousing compared with neutral pictures. Arousal during encoding impaired initial WP acquisition but did not influence retention when tested after a 1-wk delay. Data from a subsequent 3-mo delayed test, however, suggested that arousal during acquisition may enhance remote WP retention. These results suggest a potential dissociation between how readily emotional arousal influences hippocampus-dependent and striatum-dependent memory systems in humans.     

Rural Chinese children as consumers: consumption experience and information sourcing

• This study examines how often rural children in Mainland China interact with different types of retail shops, how they learn about new products and services, and their attitudes toward different sources of product information. A survey of 1008 rural children aged from 5 to 13 years, in four Chinese provinces, was conducted in March 2003. Results indicated that rural Chinese children have limited access to various types of retail shops. Rural children perceived personal sources more useful as well as more credible than commercial sources in obtaining information about new products and services. Older children found parents and grandparents less useful and less credible than younger children for new production information. However, older children did not find peers more useful and credible than younger children.

Copyright © 2006 John Wiley & Sons, Ltd.