Estimating Independent Locally Shifted Random Utility Models for Ranking Data

We present a mixed-effects location scale model (MELSM) for examining the daily dynamics of affect in dyads. The MELSM includes person and time-varying variables to predict the location, or individual means, and the scale, or within-person variances. It also incorporates a submodel to account for between-person variances. The dyadic specification can accommodate individual and partner effects in both the location and the scale components, and allows random effects for all location and scale parameters. All covariances among the random effects, within and across the location and the scale are also estimated. These covariances offer new insights into the interplay of individual mean structures, intra-individual variability, and the influence of partner effects on such factors. To illustrate the model, we use data from 274 couples who provided daily ratings on their positive and negative emotions toward their relationship – up to 90 consecutive days. The model is fit using Hamiltonian Monte Carlo methods, and includes subsets of predictors in order to demonstrate the flexibility of this approach. We conclude with a discussion on the usefulness and the limitations of the MELSM for dyadic research.     

Measuring patterns of change in personality assessments: an annotated application of latent growth curve modeling

Latent growth curve (LGC) modeling within the framework of structural equation modeling (SEM) is now highly regarded as one of the most powerful and informative approaches to the analysis of longitudinal data (see, e.g., Curran & Hussong, 2003). Whereas LGC modeling enables researchers to test for differences in developmental trajectories across time, conventional repeated measures analyses do not provide this opportunity. Nonetheless, a review of studies reported in most psychology journals reveals scant application of this methodological approach. One possible explanation for this limited use of LGC modeling is a lack of knowledge related to its application. The intent of this article, then, is to address this deficiency by presenting an annotated application of LGC modeling to health psychology data. Based on a sample of 405 Hong Kong Chinese women who recently underwent breast cancer surgery, we walk the readers through SEM modeling procedures that test for differences in both the initial status and rate of change in Psychological Morbidity and Social Adjustment at 1, 4, and 8 months postsurgery. We interpret findings from both a methodological and a substantive perspective.     

Moderate structural realism about space-time

This paper sets out a moderate version of metaphysical structural realism that stands in contrast to both the epistemic structural realism of Worrall and the—radical—ontic structural realism of French and Ladyman. According to moderate structural realism, objects and relations (structure) are on the same ontological footing, with the objects being characterized only by the relations in which they stand. We show how this position fares well as regards philosophical arguments, avoiding the objections against the other two versions of structural realism. In particular, we set out how this position can be applied to space-time, providing for a convincing understanding of space-time points in the standard tensor formulation of general relativity as well as in the fibre bundle formulation.     

Going shopping and identifying landmarks: does collaboration improve older people's memory?

Older participants (mean age = 72.82 years) attempted to recall items from shopping lists while shopping in a supermarket and subsequently in their homes on recognition tests. They also attempted to identify local landmarks on a map. The recall occurred either together with their spouses or independently. Collaborative recall was compared to the pooled, nonredundant recall of spouses who completed the memory tasks alone (nominal groups). Nominal groups produced more hits on most measures and never fewer hits than did collaborative groups. However, collaborative groups consistently generated fewer memory errors than did nominal groups. In many everyday contexts, a tendency for collaboration to reduce false recall could be advantageous to older people. Signal detection analyses revealed that collaboration leads couples to require a higher level of certainty before they are willing to claim that they recognize an item. Finally, we examined the relation between expertise and recall in the shopping and landmark tasks. Copyright © 2004 John Wiley & Sons, Ltd.     

Cognitive behaviour therapy: an evidence-based clinical framework for working with dysfunctional thoughts

This paper discusses and illustrates three evidence-based clinical strategies that could be used to work with modifying clients’ dysfunctional thoughts. An effective strategy in shifting the client's dysfunctional thought is to engage the client in an examination of the logic of his/her dysfunctional thinking and to develop objective and abstract thinking that the client could relate to his/her personal experience/problem. Another useful strategy is to help the client to realize the consequences of holding on to his/her dysfunctional thinking and the potential benefits of changing. The purpose of the present paper is to discuss the conceptual and practical issues that underpin an evidence-based clinical framework for working with dysfunctional thoughts. This framework will be of interest to practitioners and counsellor working in diversity of settings such as schools, university and college counselling centres, mental health clinics and hospitals.     

Understanding response patterns in dyadic conflict: An interactive approach combining self‐construal and opponent's dominance‐submissiveness

Previous works on the effect of self‐construal in interpersonal behaviours tend to adopt a main effect approach. The present research proposes an interactive approach in understanding two response patterns in dyadic conflict by combining self‐construal and the stance of the opponent. Independent self‐construal was hypothesised to be associated with a self‐centred pattern of conflict response, which is characterised by taking contending responses regardless of whether the stance of the opponent is dominant or submissive. Relational self‐construal was hypothesised to be associated with a tuning‐in pattern of conflict response, which is characterised by showing contending responses when the opponent is submissive but yielding responses when the opponent is dominant. With trait self‐construal measured and opponent's stance manipulated, Study 1 provided initial support for the hypotheses. Study 2 showed a three‐way interaction effect between trait self‐construal, manipulated self‐construal and the opponent's stance on actual conflict responses during discussion of a scenario. The effect of self‐construal manipulation was only observed among people who were low in trait independent self‐construal and average in trait relational self‐construal. The results pinpoint the importance of considering personal and opponent factors simultaneously in understanding the dynamics of dyadic conflict processes.     

Cognition-based and affect-based trust as mediators of leader behavior influences on team performance

We develop a model in which cognitive and affective trust in the leader mediate the relationship between leader behavior and team psychological states that, in turn, drive team performance. The model is tested on a sample of 191 financial services teams in Hong Kong and the U.S. Servant leadership influenced team performance through affect-based trust and team psychological safety. Transformational leadership influenced team performance indirectly through cognition-based trust. Cognition-based trust directly influenced team potency and indirectly (through affect-based trust) influenced team psychological safety. The effects of leader behavior on team performance were fully mediated through the trust in leader variables and the team psychological states. Servant leadership explained an additional 10% of the variance in team performance beyond the effect of transformational leadership. We discuss implications of these results for research on the relationship between leader behavior and team performance, and for efforts to enhance leader development by combining knowledge from different leadership theories.     

Random number generation deficit in early schizophrenia

Random number generation with a written response mode provides a potentially appealing marker for executive processes. Impaired performance on written random number generation tasks has been reported in chronic schizophrenic patients. However, no study has investigated whether such a deficit occurs in early schizophrenia and whether its profile and severity are similar to those in patients with chronic illness. This study investigated the ability to generate random numbers in patients with early schizophrenia (n = 44) and a healthy control group (n = 48). Patients were less able to maintain several production strategies and generated more stereotyped response sequences, whereas their abilities to identify randomness with an even-handed treatment of digits and to monitor the equality of occurrence of single digits appeared to remain intact. These results provide evidence that some aspects of the deficits in random number generation among chronic schizophrenic patients are also present at early psychotic episode, while some other aspects are relatively less affected in the early years.     

The relationship between borderline personality disorder and number of sexual partners

In this study, we examined the number of self-reported lifetime sexual partners between those with and without borderline personality disorder (BPD). Our hypothesis was that, due to the nature of the disorder, those with BPD would exhibit a greater number of lifetime sexual partners. Using a survey methodology in a consecutive sample of internal medicine outpatients (N = 354), we administered two self-report measures for BPD (the borderline personality scale of the Personality Diagnostic Questionnaire-4 and the Self-Harm Inventory), and queried participants, "How many sexual partners have you had in your lifetime?" Correlation coefficients and one-way ANOVAs were conducted to determine the relationship between BPD and the number of sexual partners. According to BPD status with the borderline personality scale of the Personality Diagnostic Questionnaire-4, we found that the mean number of sexual partners among BPD-positive participants was nearly double (p < .001) that of BPD-negative participants; according to BPD status with the Self-Harm Inventory, the mean number of sexual partners among BPD-positive participants was more than double (p < .001) that of BPD-negative participants. Compared to internal medicine outpatients without BPD, those with BPD exhibit a statistically significantly greater number of sexual partners.