Published online by Cambridge University Press: 21 June 2019
As noted in the Introduction to this book, there has been a great deal of research on relationships, but very little of it has been cross-cultural. Even less has involved relationships other than marriage. A notable exception is a recent anthology about grandparents in various cultures (Schwalb & Hossain, 2017). Also of interest is a one-year longitudinal study that found that Rusbult’s Investment Theory predicted staying best friends among adolescents in the Netherlands (Branje et al., 2007). Another study explored social support among siblings (brothers or sisters) in the Netherlands (Voorpostel & Blieszner, 2008).
Chapter 1 introduced the statistical tools and conceptual tools used in this book. Future research is needed using these tools in the following ways.
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