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In this paper we both describe and analyze the meeting process and the evolution of a friendship network among sociology freshmen in the Netherlands. We develop a theory that explains how changes in the network structure depend on one or more of four main effects; proximity, visible similarity, invisible similarity, and network opportunity. We formulate expectations with regard to what factors are important at what stages of the friendship development, making a distinction between 'meeting' and 'mating.' To some extent, the results confirm our expectations. The proximity and visible similarity variables determine change in network structure in the early stages, whereas network opportunity is important during all stages. Unfortunately, no significant effects of invisible similarity are found. [ABSTRACT FROM AUTHOR]

In order to understand the interdependency between intergenerational and adult sibling relationships, a family systems perspective is applied to identify a smaller—empirically analyzable—relational unit of analysis, that is, the sibling–parent–sibling triad. Using balance theory, triadic configurations are derived that represent enhancement, compensation, and loyalty conflicts. The hypotheses are tested for three relational dimensions: support exchange, contact, and conflict. Multilevel analyses of 549 sibling–parent–sibling triads from the Netherlands Kinship Panel data show strong evidence for enhancement, whereas some indication was obtained for sibling relationships being affected by loyalty conflicts. The results underscore and substantiate interdependency between intergenerational and adult sibling relationships. [ABSTRACT FROM AUTHOR]

— Aims: The relationship between alcohol consumption, cigarette smoking and post-traumatic stress disorder (PTSD) was studied in 147 male former members of the civilian resistance against the Nazi occupation of Holland during World War II. Methods: The subjects were interviewed at home. Measures included rating of current PTSD and a self-report measure of smoking and alcohol use. Results: The weekly alcohol consumption reported by veterans was substantially below that of the general population. Furthermore, there was no significant difference in self-reported alcohol consumption between veterans with and without current PTSD. Cigarette smoking, however, was more prevalent in those with current PTSD. Conclusions: The absence in these veterans of a correlation between PTSD and alcohol consumption is contrary to the results of most studies on this subject. It may be related to the exclusion from organized resistance activities of people prone to the over-consumption of alcohol. It is hypothesized that, in trauma survivors, current substance use is associated with peri-traumatic patterns of psychological tension–reduction modes. [ABSTRACT FROM PUBLISHER]