Couple Adjustment and Differentiation of Self in the United States,Italy, and Spain: A Cross-Cultural Study

This study comprises a first attempt to explore a cross-cultural application of Bowen family systems theory and examines the relationship between differentiation of self and couple adjustment using measurement invariance. A sample of 2,141 individuals (n = 915 from the United States; n = 635 from Italy; n = 591 from Spain) completed measures of differentiation of self (DSI-R; Skowron & Schmitt, J Marital Fam Ther, 29, 2003, 209) and couple adjustment (DAS; Spanier, J Marriage Fam, 38, 1976, 15). Results showed evidence of partial measurement equivalence for the DSI-R across the three samples. Additionally, results from latent regression showed that less emotional cutoff predicted greater couple adjustment in the United States, Spain, and Italy, whereas greater emotional reactivity predicted poorer couple adjustment only in the more collectivistic cultures, Spain and Italy. Our findings are consistent with prior empirical studies, which suggest that emotional cutoff is a strong predictor of relationship adjustment. The use of measurement invariance provides a foundation for future studies to continue employing rigorous statistical methods when examining constructs across different cultures. The findings highlight culture-specific similarities and differences in differentiation that may benefit practitioners by informing psychotherapy with individuals, couples, or families from diverse populations.     

Path analysis of exercise treatment-induced changes in psychological factors leading to weight loss

Physical activity may affect weight loss largely through psychological pathways associated with eating changes, especially in obese individuals whose caloric expenditure through exercise is typically small. Direct testing of this is, however, lacking. Previously sedentary adults (N?=?114; 77% female; M _age?=?43.3 years), with a minimum body mass index (BMI) of 35?kg/m² (M _BMI?=?42.0?kg/m²), participated in a 24-week treatment of cognitive-behavioural exercise support and nutrition information. A path model based on tenets of social cognitive and self-efficacy theory was constructed. It was expected that improvements in self-efficacy, physical self-concept, body satisfaction and mood associated with the exercise treatment would predict changes in self-regulation and increased physical activity. It was also hypothesised that improvements in self-efficacy and self-regulation for appropriate eating would transfer from these relationships and predict weight loss. After three theoretically viable paths were added based on modification indices, structural equation modelling indicated a good fit with the data, χ ²(16)?=?20.53, p?=?0.20; RMSEA?=?0.05; SRMR?=?0.06; CFI?=?0.97; TLI?=?0.95. Associations of psychological effects linked to exercise programme participation with predictors of appropriate eating and weight loss were found, and may inform theory, research and treatments.     

Q-Coh: A tool to screen the methodological quality of cohort studies in systematic reviews and meta-analyses

The evaluation of the methodological quality of primary studies in a systematic review is a key process to enhance the likelihood of achieving valid results. When considering non-randomized designs as cohort studies, this process becomes even more critical, since these designs are more susceptible to bias than randomized controlled trials are. Taking this into account, a tool, named Q-Coh, was designed with the aim to screen the methodological quality of the primary studies with a cohort design priming specificity over sensitivity in a reasonable application time. After applying it to 21 prospective cohort studies by three raters, all domains had a moderate to good agreement, with all except one of them having statistically significant kappa values. Despite there is no gold standard for the methodological quality, arguments supporting its validity are given. Future research should assess the psychometric properties of Q-Coh in the context of real meta-analyses, evaluate the influence of the raters’ substantive and methodological expertise on these properties, and explore different ways of including the domains-based ratings of the quality provided by Q-Coh into meta-analyses.     

Group Productivity and Telematic Communication

Abstract

Evidence offered by Bottger and Yetton has suggested that group performance is a function of member abilities and strategies to use them. This model completed previous ones offered by Steiner and Davis which were developed under the assumption that group communication occurs in a face-to-face situation. However, since the 1980s, a considerable amount of research has focused upon new ways of communication through new technologies. Findings from psychosocial studies suggest that the use of computers for communication changes group processes and outcomes. In this context, a new research question emerges, which is concerned with group performance as a function of the communication channel. New models should be developed for a better understanding of group performance in mediated communication context. This study presents results from a laboratory experiment comparing three communication media: face-to-face, electronic mail, and video-conference, in a multi-decision task (“moon survival”). Its main objective has been to replicate Bottger and Yetton's model but to incorporate the communication channel mentioned above as a moderator variable of group performance. Variables considered have been input variables (members' resources for achieving task); process variables (group composition according to consensus reached, adequate use of resources, and quality of conflict management), and group performance. Our results show the existence of different patterns for predicting group performance according to the communication channel employed. In this sense, in a face-to-face situation groups perform mainly on the basis of their members' knowledge of the task, as in Steiner's model. The performance of video-conference groups was due to the decision schemes, that is, how groups use their resources (the Davis model). Bottger and Yetton's model has been partially replicated in electronic mail situations. The management of the process is crucial for explaining group performance, but it may be necessary to code it in a different way. Therefore, the positive conflict management will be different from face-to-face and video-conference.     

Using the linear mixed model to analyze nonnormal data distributions in longitudinal designs

Using a Monte Carlo simulation and the Kenward–Roger (KR) correction for degrees of freedom, in this article we analyzed the application of the linear mixed model (LMM) to a mixed repeated measures design. The LMM was first used to select the covariance structure with three types of data distribution: normal, exponential, and log-normal. This showed that, with homogeneous between-groups covariance and when the distribution was normal, the covariance structure with the best fit was the unstructured population matrix. However, with heterogeneous between-groups covariance and when the pairing between covariance matrices and group sizes was null, the best fit was shown by the between-subjects heterogeneous unstructured population matrix, which was the case for all of the distributions analyzed. By contrast, with positive or negative pairings, the within-subjects and between-subjects heterogeneous first-order autoregressive structure produced the best fit. In the second stage of the study, the robustness of the LMM was tested. This showed that the KR method provided adequate control of Type I error rates for the time effect with normally distributed data. However, as skewness increased—as occurs, for example, in the log-normal distribution—the robustness of KR was null, especially when the assumption of sphericity was violated. As regards the influence of kurtosis, the analysis showed that the degree of robustness increased in line with the amount of kurtosis.     

A comparison of female and male adolescents' social behaviors and cognitions: A challenge to the assertiveness literature

Sex differences were investigated in the thoughts and behaviors of adolescents in simulated social situations. The pattern of sex differences indicated females to be more appropriately assertive in their overt behaviors than males. Males were more aggressive. In their cognitions females were more likely to deny their impact on others, while males were more likely to deny the impact of others on themselves. Potency training was suggested for females, assertiveness training for males. Cluster analyses of correlations among behaviors and thoughts revealed four clusters for females: external locus of control, internal locus of control, active expressiveness, and social isolation or denial. The three male clusters were a negative impotent one, a positive active cluster, and an aggressive hostile cluster.The research reported is based on a dissertation submitted in partial fulfillment of the requirements for a Ph.D., University of Toronto (OISE). The research was partially funded by OISE Research and Development Grant No. 3478, awarded to the second author.     

The Effects of Self-Correction Versus Traditional Spelling on the Spelling Performance and Maintenance of Third Grade Students

We examined the effect of self-correction versus a traditional spelling approach on the acquisition and maintenance of written spelling of elementary school students enrolled in third grade. Six students, who were at risk for spelling failure, served as subjects. During self-correction, students used a form with five columns that contained correct pre-written models of spelling words. After reviewing the word list, students folded back the first column, which contained the words. Then, they listened to their spelling list on individual cassette players and spelled each word in turn in the subsequent columns of the form. Students checked their spelling responses by unfolding the first column and matching their responses to the sample. Each correct spelling response was marked with a C incorrect spellings were fixed by writing the correct orthography above the word. During traditional spelling, students wrote each spelling word five times, using a pre-written model as a guide. Results showed a functional relationship between self-correction and improved spelling performance. Five of the six maintained a higher number of posttests words on maintenance probes. All students preferred the self-correction method over the traditional spelling method.