In this summary of my recent book (Kirkpatrick, 2004), I outline a general theoretical approach for the psychology of religion and develop one component of it in detail. First I review arguments and research demonstrating the utility of attachment theory for understanding many aspects of religious belief and behavior, particularly within modern Christianity. I then introduce evolutionary psychology as a general paradigm for psychology and the social sciences, arguing that religion is not an adaptation in the evolutionary sense but rather (...) a byproduct of numerous psychological systems that evolved for other adaptive purposes, of which the attachment system is just one example. I conclude by summarizing numerous advantages of this framework over other extant approaches to the psychology of religion. (shrink)