Oh, how I wish more books like "Gender and Grace" existed! This is a thoroughly Christian book, which takes scientific inquiries into the biology and psychology of gender extremely seriously. Too often, rhetoric around gender (especially in Evangelical circles) gets way too simplified, and appeals are made to emotions, to personal experiences, or to flat or "plain" readings of scripture. Rather than take any of these options, Van Leeuwen has managed to provide a sensible voice that is conversant with the most up-to-date (keep in mind this was published in 1990) research into gender and sexual identities. The result is a well-informed, balanced, and quite thoughtful perspective.
Readers should know that she is quite critical of the "heirarchical/complementarian" perspective, but if that irks you, I highly, highly recommend you take a deep breath and plunge in. Allow Van Leeuwen's research to inform your thinking, and give her the credibility she so obviously deserves. In particular, the chapter "The Persistence of Patriarchy" should be required reading for all "male headship complementarians."
I would love to see this book revisited with some updated research. Come on, IVPress, make this happen! This is highly, highly recommended to anyone with more than a passing interest in this subject/conversation.