In this paper, we deene the Multilevel Rela-tional (MLR) data model for multilevel relations with element-level labeling. This model builds upon prior work of numerous authors in this area, and integrates ideas from a number of sources. A new data-based semantics is given to the MLR data model which combines ideas from SeaView, belief-based semantics and LDV model, and has the advantages of bot...

This study examines the social networks of prisoners in the period from before to after their incarceration. We use unique panel data on 702 prisoners and their core discussion networks. Our results show that while the size of prisoners’ core discussion network is stable, prisoners have replaced 60% of their core discussion network members after incarceration. Moreover, multinomial multilevel m...

Multilevel Models (MLM) have pioneered the analysis of hierarchical data, with two or more levels. Agent-Based Models (ABM) are also used to analyse social phenomena in which there are two or more levels involved. This paper addresses the integration between MLM and ABM. To provide a basis of comparison, we focus on differential school effectiveness analysis, where MLM has been well studied, us...

The relationship between Internet usage and the Big Five as well as three narrow personality traits was examined using 117 undergraduates as study participants. Results indicated that total Internet usage was negatively related to three of the Big Five traits – Agreeableness, Conscientiousness, and Extraversion as well as two narrow traits – Optimism and Work Drive, and positively related to To...

BACKGROUND The literature has rarely paid attention to the differential influence of intergroup contact on subtle and blatant prejudice. In this study, we hypothesized that the influence of intergroup contact on subtle prejudice will be smaller than its influence on blatant prejudice. METHOD This hypothesis was tested with data from a cross-sectional design on 1,655 school-aged native Spanish...

As computer systems become distributed and heterogeneous, there is strong movement in the commercial sector to ease the problems of interoperability and security. Many standards have been proposed for these problems. However, the commercial sector has not shown strong interest in providing cost-effective high-assurance multilevel security (MLS) solutions to the relatively small communities (e.g...

Purpose – The purpose of this paper is to examine mentoring relationships involving minority graduate students in the USA. Design/methodology/approach – The authors take a multifaceted approach to providing strategies to improve the opportunities of minority students to acquire mentors by directing attention to institutional practices, faculty development, and the behaviors of students themselv...

This study examined changes in members’ satisfaction with group processes as they worked together over time to complete a series of seven group tasks. Members of 10 groups (N 58) communicated with each other using a computer-based collaborative technology over a 10-week period. Satisfaction with group processes was partitioned into individual and group levels with Hierarchical Linear Modeling, ...

In the current study we investigated the association between intimacy and passion by testing whether increases in intimacy generates passion (Baumeister and Bratslavsky, 1999). Furthermore, we examined whether there are partner effects in intimacy change and passion link. Couples (N = 75) participated in a 14-day long diary study. Dyadic multilevel analyses with residualized intimacy change sco...