Media use in long-distance friendships

New media such as email and mobile phones have made it easier to maintain relationships over distances. The present paper examines which media people use to maintain long-distance friendships. The main focus lies on the comparison of email and phone. Media choice theories like media richness theory assume that media can be classified according to their richness, and that people choose the medium which fits best to the affordances of a specific task. The phone as richer medium should be preferred over email in the case of maintenance of long-distance friendships because it is easier to express emotions and to give immediate feedback via phone than via email. Email is an asynchronous medium and communication via email is therefore independent of space and time. Therefore, it can also be argued that email is preferred over the phone because it makes it easier to communicate across different work schedules or even time-zones. In two studies (Study 1 conducted in the Netherlands, Study 2 conducted in Germany) media use in long-distance friendships was measured. Across both studies, email was the most frequently used medium. In Study 1, an interesting asymmetric influence of closeness of the friendship emerged. The closer the friendship, the more emails were written in total, but the less the relative use of email. Instead, the percentage of phone calls increased. Study 2 aimed to replicate and explain this finding and assessed also the content of the phone call or emails. Whereas the intimateness of the emails did not change with increased closeness of the friendship, the intimateness of the phone calls increased with increasing closeness of the friendship. This result indicates that people use email primarily for staying in touch, whereas important personal matters are still discussed on the phone.     

A Weighted Composite Dose – Response Model For Human Salmonellosis

This article describes the development of a weighted composite dose – response model for human salmonellosis. Data from previously reported human challenge studies were categorized into two different groups representing low and moderately virulent/pathogenic Salmonella strains based on a disease end point. Because epidemiological data indicate that some Salmonella strains are particularly pathogenic, and in the absence of human feeding study data for such strains, Shigella dysenteriae was used as a proxy for highly virulent strains. Three single-hit dose – response models were applied to the human feeding study data and evaluated for best fit using maximum likelihood estimation: (1) the exponential (E-1pop), (2) the two-subpopulation exponential (E-2pop), and (3) the Beta-Poisson (BP). Based on the goodness-of-fit test, the E-1pop and BP were the best-fit models for low and moderately virulent/pathogenic Salmonella strains, and the E-2pop and BP models were better for highly virulent/pathogenic strains. Epistemic analysis was conducted by determining the degree of confidence associated with the selected models, which was found to be 50%/50% (E-1pop/BP) for low and moderately pathogenic Salmonella strains, and 9.8%/90.2% (E-2pop/BP) for highly virulent strains. The degree of confidence for each component model and variations in the proportion of strains within each virulence/pathogenicity category were incorporated into the overall composite model. This study describes the influence of variation in strain virulence and host susceptibility on the shape of the population dose – response relationship.     

Compensatory Weight Control Behaviors of Women in Emerging Adulthood: Associations Between Childhood Abuse Experiences and Adult Relationship Avoidance

Abstract

Objective: To examine correlates of compensatory weight control behaviors among women in transition between adolescence and adulthood. Participants: The authors recruited a sample of undergraduate women (N = 759) at a large northwestern university during the 2009–2010 academic year. Methods: Logistic regression was used to assess relations among childhood abuse, psychosocial functioning, adult dating relationship factors, and women's endorsement of compensatory weight control behaviors. Results: The final model reliably distinguished between participants who endorsed versus denied use of compensatory behaviors (χ²[5, N = 747] = 36.37, p < .001), with global psychosocial functioning and relationship avoidance accounting for the most variance. Conclusions: These findings illustrate the importance of considering childhood abuse histories and adult relationships while assessing young women's compensatory weight control behaviors.     

Coming Out as “We 3”

Abstract

Using an academic letter format, I use a blended-method-ological approach of personal ethnography and qualitative case study to assess the three-partner, gay male relationship and the role of parental support. In working to understand better the relational “We 3,” I first provide an account of my relational experience with two other men. I discuss the process of our coming together and then make a methodological turn to provide insights from both e-mail and face-to-face interviews with one set of parents who have supported their gay son in his three-partner relationship. As I, personally, have not had an in-depth conversation with my own parents regarding this issue, I use the parental case study to bridge an academic conversation regarding the negotiation of what might be termed a second or relational coming out process with parents. Finally, I discuss how insights from the first, personal coming out process provided the parents with tools to keep the conversation going and to support their son's relational coming out as a “We 3.”     

中板主轧机调速系统的确定与设计

从设计的角度介绍了中板主轧机传动调速系统的应用、满足用户需求、主传动系统的合理设置与对策、系统最佳性价比等.本着科学和负责任的态度提出自己独到的分析和见解.     

Relational and Individual Resources as Predictors of Empathy in Early Childhood

The goal of this study was to examine children's cognitive and language development and social engagement of mother as mediators of the relationship between maternal emotional availability at 15 months and children's empathy at the ages of two and four. Participants were 661 low-income, ethnically diverse mother-child dyads participating in a trial of home visitation in the Denver area. Using home- and lab-based free-play episodes, mothers' emotional availability (15 months) and children's social engagement of mother (21 and 24 months) were assessed. Standardized measures were used to assess children's language development (21 months) and cognitive development (24 months). Empathy was assessed using a simulated injury paradigm at ages two (both 21 and 24 months) and four. The predictive models supported the hypothesis that the child's cognitive and social resources mediate the relationship between maternal emotional availability and children's empathy with respect to empathy at the age of two toward both mothers and an unfamiliar examiner. These results indicate that parental sensitive behavior is not the only important condition for predicting children's empathy, and that children's own internalized resources are a likely mechanism of transmission from parents caring for their children to children learning to care for others.     

Looking inside the bag of tools: creating research encounters with parents with an intellectual disability

This paper examines the development of fieldwork methodology in a study that investigated the parenting experiences and parent support needs of a group of parents with an intellectual disability. It considers the ways in which the original planning for the project changed as the fieldwork unfolded, requiring adaptations to our methodological expectations and in the process deepening our understanding of the phenomena we were studying and reinforcing for us the importance of relationships in fieldwork‐based research. Three themes in particular are considered that became central to this research: research relationships; safety for participants/positioning of the researcher; suspending assumptions about impairment and disability and influences on life experiences.     

大学生人格特征与人际关系的相关研究

采用人格特征问卷和人际关系量表对370名在校大学生进行问卷调查分析。结果显示,大学生的精神质维度在性别、学科性质、学制及是否独生上有显著差异;人际关系水平在学科性质与学制上有显著差异;精神质、神经质维度与人际关系有显著负相关;外倾性与人际关系有显著正相关。表明大学生人格特征是影响人际关系的因素。     

Social Relations Model Analyses of Perceived Self‐Control and Trust in Families

How do people know which family member is trustworthy? In this study, the authors tested the hypothesis that people use their perception of a family member's self‐control as an indicator of his or her trustworthiness. Eighty‐four Dutch families consisting of 2 parents and 2 children completed questionnaires assessing each family member's trust in and perceived self‐control of the other 3 family members. This full‐family design enabled the authors to examine their hypothesis in horizontal relationships, between family members of equal status (i.e., parent–parent and sibling–sibling relationships), and vertical relationships, in which partners have unequal status (i.e., parent–child and child–parent relationships). Consistent with the hypothesis, Social Relations Model analyses showed that being perceived as having higher self‐control is related to greater trustworthiness among adults and children in the large majority of horizontal and vertical relationships (10 out of 12). These findings highlight that perceived self‐control is an important factor by which to gauge trustworthiness in families.     

Challenges and Opportunities for Research on Same‐Sex Relationships

Research on same‐sex relationships has informed policy debates and legal decisions that greatly affect American families, yet the data and methods available to scholars studying same‐sex relationships have been limited. In this article the authors review current approaches to studying same‐sex relationships and significant challenges for this research. After exploring how researchers have dealt with these challenges in prior studies, the authors discuss promising strategies and methods to advance future research on same‐sex relationships, with particular attention given to gendered contexts and dyadic research designs, quasi‐experimental designs, and a relationship biography approach. Innovation and advances in the study of same‐sex relationships will further theoretical and empirical knowledge in family studies more broadly and increase understanding of different‐sex as well as same‐sex relationships.