Social networks, perceptions of risk, and changing attitudes towards HIV/AIDS: New evidence from a longitudinal study using fixed-effects analysis

Abstract

The study presented here is an investigation of the importance of social interactions to perceptions of the risk of AIDS, and explores spousal communication about the AIDS epidemic in rural Malawi. A fixed-effects analysis based on longitudinal data collected in 1998 and 2001 shows that social interactions on the subject of HIV/AIDS have significant and substantial effects on respondents’ perceptions of the risk of HIV/AIDS, even after controlling for unobserved factors that affect the selection of social networks. These effects are more complex than previously thought. The dominant mechanisms—social learning and social influence—are found to vary by sex and by region, because of regional variations in the marriage pattern and the resulting implications for the formation of local social networks. The conclusion of the study is that rather than fostering denial and inaction, social interactions are an important vector of change in the face of the HIV/AIDS epidemic.

Keywords:

• HIV/AIDS
• social interactions
• risk perceptions
• Malawi
• unobserved heterogeneity
• longitudinal studies

Notes

1. Stéphane Helleringer is a PhD candidate in the Population Studies Center, University of Pennsylvania, 3718 Locust Walk, Philadelphia, PA 19104-6299, USA. E-mail: [email protected]

2. Hans-Peter Kohler is Associate Professor of Sociology and Research Associate in the Population Studies Center, University of Pennsylvania, 3718 Locust Walk, Philadelphia, PA 19104-6299, USA. E-mail: [email protected]

3. We are grateful for the many helpful comments that we have received from Susan Watkins, Jere Behrman, Irma Elo, Georges Reniers, Philip Anglewicz, and two anonymous referees. We also gratefully acknowledge the support for this research through NIH grants RO1 HD044228 and RO1 HD/MH41713.