Book excerpt: A unique collection of essays that deal with the intriguing and complex problems connected to the question of Jewish identity in the contemporary world. Concerning the problem of identity formation, this book addresses very important issues: What is the content or meaning of Jewish identity? What has replaced religion in defining the content of Jewishness? How do people in different age groups construct their Jewish identity? In most cases, the authors have combined a variety of research methods: they drew samples or relied on the sample surveys of others; used personal interviews with respondents who are especially knowledgeable about their own Jewish communities, or based their research on participant observation of particular communities or communal institutions.