This article reviews the purpose of the 3-part Special Issue on Spirituality and Adult Development, described in the Introduction to Special Issue Part I (J. D. Sinnott, 2000). It also outlines the contents of Part II. Developing adults express their belief that spirituality plays a key role in their development, yet developmental psychologists have given comparatively little attention to this factor. Also the concept of spirituality has seldom been considered separately from that of religion. The purpose of this special issue is to begin to remedy this neglect. This introduction is a summary of the 7 empirical and theoretical articles that form Part II of the Special Issue on Spirituality and Adult Development.