Maternal and Paternal Mental‐state Talk and Executive Function in Preschool Children

The present study examined the relationship between parents’ mental‐state talk and preschoolers’ executive function. Seventy‐two children participated in the present study, as well as their mothers and fathers. When children were enrolled in the second preschool year, mothers’ and fathers’ use of mental‐state references were assessed during a shared picture‐book reading task with the child. Later, four months before admission to the first grade, preschoolers’ executive function was measured. Hierarchical regression analysis revealed that maternal, but not paternal, mental‐state talk was a significant predictor of children's executive function composite, even after accounting for child gender, age, verbal ability, and parental education. When looking at each of the EF components, maternal mental‐state talk proved to be a predictor of set‐shifting whereas no significant relations emerged with inhibitory control or working memory. These findings add to prior research on parenting quality and executive function in preschoolers.     

Resident-to-resident elder mistreatment (R-REM): a study in residential structures for elderly people (ERI) in Portugal

This study explores patterns of resident-to-resident elder mistreatment (R-REM) in Portuguese Residential Structures for Elderly People (ERI: Estruturas Residenciais para Idosos). Results display a serious situation of R-REM, which occurs in different patterns.     

Total training load may explain similar strength gains and muscle hypertrophy seen in aged rats submitted to resistance training and anabolic steroids

This study aimed to quantify training parameters and analyze the morphological response of aged muscles submitted to resistance training and anabolic steroids. Aged Wistar rats were divided into groups: C – initial control; CF – final control; CAS – control with anabolic steroid, RT – resistance training, and RTA – resistance training with anabolic steroid. Maximum carried load, absolute and relative loads increased significantly in RT and RTA. RTA demonstrated greater relative load than RT. Average total volume, total climbing volume, relative total volume, relative total climbing volume, and mean climbing volume were similar between groups RT and RTA. For soleus, CAS, RT, and RTA enlarged cross-sectional area of type I fibers and nuclear ratio. As for type II fibers, RTA was higher than C and CF. For plantaris, RT and RTA showed significant increases in myofibers type I compared to C and CF. For type II fibers, RTA showed a significant increase compared to C and CF. Regarding the nuclear ratio, RT and RTA showed a higher ratio than C, CF, and CAS. Our results demonstrated that both RT and RTA were not different among the analyzed morphological parameters. This fact can be explained by the absence of differences found in the training variables analyzed.     

Relationships between work–family dynamics and parenting experiences: a dyadic analysis of dual-earner couples

Research on the work–family interface has not consistently addressed how the positive and negative features of work–family dynamics relate to the experience of parenting, and still fewer studies have explored these interrelationships using dyads. This investigation addressed this gap by examining the extent to which mothers’ and fathers’ reports of work–family conflict and enrichment in?uenced their own and their spouse’s parenting experiences. Each member of 346 dual-earner couples in Portugal completed measures of work–family conflict (WFC) and work–family enrichment (WFE), along with measures of parenting attitudes and competencies. Dyadic analysis revealed that WFC and WFE affected the quality of parenting attitudes and competencies differently in men and women. Also, a differential pattern of crossover effects between partners was found, particularly with respect to the effect of mothers’ work–family dynamics on fathers’ parenting experience. For women, while only one significant partner effect was observed (from fathers’ WFC to mothers’ increased relational frustration), four partner effects were found in men’s parenting experience (from mothers’ WFC to fathers’ increased relational frustration, reduced sense of competence and reduced attachment; and from mothers’ WFE to fathers’ increased involvement). Further implications of these findings for advancing understanding of the impact of work–family dynamics on intrafamily relationships are discussed.     

Enhancing the intercultural effectiveness of exchange programmes: formal and non-formal educational interventions

This paper examines how the addition of intercultural interventions carried out throughout European credit-bearing exchange programmes can enhance sojourners’ development of intercultural competencies, and it explores how both formal and non-formal pedagogical interventions may be designed and implemented. Such interventions were conducted at a Portuguese university with 31 sojourners throughout one academic year, and their impact was assessed using a mixed methods research design. Sojourners included incoming students of the exchange programmes Campus Europae and Erasmus, as well as highly skilled immigrants. Findings confirm the positive impact of interventions on the development of intercultural competencies and, in turn, their contribution to internationalisation efforts. Implications for further research suggest a need to increase interventions and to develop a systematic approach for fostering intercultural competencies throughout the study abroad cycle.     

Introduction to the Special Collection

In this essay, the authors argue that although “South” and “North” are more and more becoming problematic categories in the social sciences, in general, and in migration studies, in particular, it still makes sense today to focus on South‐South migrations. Not only because of its mere quantitative importance, but for a number of reasons. Firstly, new South‐South migration patterns are observable and new data are becoming available. Secondly, South‐South migrations still have a number of distinct features, including: the role of borders, the composition of migration flows, the migration‐conflict nexus, regional migration governance, and the specific relationships with certain migration‐related concepts and variables.     

Effects of testosterone administration on liver structure and function in aging rats

Aging males have a decrease in testosterone levels, by which the testosterone treatment may influence in a negatively fashion the liver.

Aim: This study aimed to analyze the effects of aging with or without testosterone administration on the liver components of animals.

Methods: Wistar rats were divided into three groups: 20 months’ group (G20), 24 months’ group (G24), group treated with testosterone for 16 weeks (GT). All groups were sacrificed at 24 months except for G20 that was sacrificed at 20 months.

Results: Aging and testosterone treatment alters the body weight (BW), liver weight (LW) and relative liver weight. Besides, testosterone increased the mitogen capacity of hepatocytes. Nonetheless, we reinforce the negative effects of testosterone on old animals’ liver as chronic hepatic congestion and/or cholestasis. In addition, we observed that testosterone plays an important role on hepatic glycogen stores.

Conclusions: Our study showed many implications for the knowledge about the effects of aging with or without testosterone administration on old animals’ liver.     

Preliminary Findings on Men's Sexual Self-Schema and Sexual Offending: Differences Between Subtypes of Offenders

Available literature suggests that sexual self-schemas (i.e., cognitive generalizations about sexual aspects of oneself) influence sexual behavior. Nonetheless, there is a lack of research regarding their role in sexual offending. The aim of the present study was to investigate the relationship between the men's sexual self-schema dimensions (passionate-loving, powerful-aggressive, and open-minded-liberal) and different types of sexual-offending behavior. A total of 50 rapists, 65 child molesters (21 pedophilic, 44 nonpedophilic), and 51 nonsexual offenders answered the Men's Sexual Self-Schema Scale, the Brief Symptom Inventory (BSI), and the Socially Desirable Response Set Measure (SDRS-5). Data were analyzed using multinomial logistic regression, controlling for age, school education, psychological distress, and social desirability. Results showed that rapists as well as nonsexual offenders were more likely to hold the powerful-aggressive sexual self-view compared to pedophilic and nonpedophilic child molesters. Overall, findings seem to be consistent with both a sociocultural component of aggression and the general cognitive profile of offenders. If further research corroborates these preliminary findings, sexual self-concept may be integrated into a comprehensive multifactorial approach of offending behavior.     

Penalized maximum likelihood estimation in the modified extended Weibull distribution

We address the issue of performing inference on the parameters that index the modified extended Weibull (MEW) distribution. We show that numerical maximization of the MEW log-likelihood function can be problematic. It is even possible to encounter maximum likelihood estimates that are not finite, that is, it is possible to encounter monotonic likelihood functions. We consider different penalization schemes to improve maximum likelihood point estimation. A penalization scheme based on the Jeffreys’ invariant prior is shown to be particularly useful. Simulation results on point estimation, interval estimation, and hypothesis testing inference are presented. Two empirical applications are presented and discussed.