Jealousy in Firstborn Toddlers within the Context of the Primary Family Triad

Childhood jealousy has typically been examined in a limited number of jealousy‐evoking contexts and mainly with the mother only, thus providing a narrow view on the manifestations of jealousy. The aim of the present article is to examine childhood jealousy within parent–child dyads and (mother–father–child) triads and across multiple contexts. The sample included 87 Dutch families with a toddler (38 girls, 49 boys, M_age: 23 months). Children were challenged in several jealousy‐evoking situations using social and non‐social objects as rivals during videotaped family play sessions. Children's jealous behavior (e.g., negativity, distraction) and jealous emotions (e.g., anger) were coded. We found the most jealous behavior in contexts including a doll as a rival and the least in the non‐social object conditions. Children showed more jealous behavior toward mothers than fathers. Children showed elevated levels of anger in most jealousy situations.     

Aller Anfang ist schwer — Problem-und Zieldefinition in der Organisationsberatung

The article examines the initial phase of (management) consulting projects from a sociological perspective. The main focus lies on the processes of defining the initial problems that lead to the consulting project and the goals of the project. The article describes the clarification process carried out jointly by consultants and clients in the first phase of a project. After stressing the importance of these activities for project success, the factors that might disturb these processes are then analyzed and discussed, primarily following system-theoretical and micro-political considerations.     

Dynamic exchange networks

Considering the theoretical and empirical untenability of static exchange networks, researchers have asked how exchange outcomes change when links are added or deleted. The present paper assesses the validity of seemingly sensible propositions concerning the effects of adding and deleting a link on (i) the payoffs of the actors in the link, (ii) the payoffs of actors in neighboring links and (iii) the variance of payoffs in the exchange network. The propositions were examined by applying expected value theory (EVT) to all 13,597 networks up to size 8. All propositions were falsified. Some falsifications of propositions could be attributed to EVTs prediction that actors use sub-optimal exchange relations. Since other well-known theories of exchange, like power-dependence theory and network exchange theory, also predict that actors use sub-optimal relations, these results are robust to selection of the theory of exchange.     

Network contact changes in early and later postseparation years

This study explains changes in contact frequency in relationships of the preseparation personal network in the early and later years after partners separate. The explanation includes general and separation-related characteristics of the network relationship and the individual. Personal interviews were conducted in three waves of a 12-year longitudinal study with 40 men and 64 women who separated in 1987 or 1988. Multilevel analyses on 1639 network ties showed that multiplex and kin relationships remained over the long term. Contact changes depended on network relationship characteristics, structural conditions, perceived restrictions, and alternative network relationships. Separation-related characteristics were more important in the early years, general characteristics in the later years after the separation.     

Explorations of Post‐Divorce Experiences: Women's Reconstructions of Self1

In this article I explore from a social constructionist perspective the experiences of women when recovering from divorce. Women have a natural resilience and develop unique ways of coping with the experience of divorce through reconstructing themselves in their linguistic and cultural context. Divorced women often face dominant discourses that elicit intense internal discomfort, conflict, and loss of socially constructed self. This can result in their experiencing themselves as less meaningful and worthy as relational beings. I explore the processes by which four women, single again, have experienced these constraints and emerged as reconstructed selves. The discussion is based on qualitative analysis of textual data obtained from written accounts.     

Transforming family positions: a conversational analysis of a family social work case

In a discourse and conversational analysis of a Dutch family supervision order, the transformations in family positions are examined. The parents in this case consider their son's drug addiction to be an individual problem. The family guardian succeeds in convincing them that it is a problem which concerns all the family rather than merely a personal issue for their son. By combining a positive and supportive attitude towards the parents with an unrelenting emphasis on the familial character of Marco's problems, the family guardian succeeds in getting the parents to reflect on their own position in relation to their son and their share in the problems in his life.     

Predicting the Daily Covariance Matrix for S&P 100 Stocks Using Intraday Data—But Which Frequency to Use?

This article investigates the merits of high-frequency intraday data when forming mean-variance efficient stock portfolios with daily rebalancing from the individual constituents of the S&P 100 index. We focus on the issue of determining the optimal sampling frequency as judged by the performance of these portfolios. The optimal sampling frequency ranges between 30 and 65 minutes, considerably lower than the popular five-minute frequency, which typically is motivated by the aim of striking a balance between the variance and bias in covariance matrix estimates due to market microstructure effects such as non-synchronous trading and bid-ask bounce. Bias-correction procedures, based on combining low-frequency and high-frequency covariance matrix estimates and on the addition of leads and lags do not substantially affect the optimal sampling frequency or the portfolio performance. Our findings are also robust to the presence of transaction costs and to the portfolio rebalancing frequency.     

Theories of network exchange: Anomalies,desirable properties,and critical networks

The present study evaluates four well-known theories of exchange in networks. In previous research these theories’ predictions were compared for a small set of networks using experimental data. We compared their predictions for all 12,112 networks up to size 8. By comparing these predictions we (i) identified anomalies in theories of network exchange, (ii) investigated to what extent the theories satisfy basic principles of exchange, (iii) identified ‘critical’ networks for which predictions are very different. We conclude that exchange in networks is not yet well understood.