Daas Torah: Source Book
While I have a Ph.D.in psychology I have spent most of my time in the last 25 years in writing scholarly books for the Orthodox Jewish community. I have written Yad Moshe which is the index to the Igros Moshe of Rav Moshe Feinstein. I have written Yad Yisroel the index to the Mishna Berura of the Chofetz Chaim and  Daas Torah an encyclopedia of Jewish Theology. I also write a blog Daas Torah which deals with issues that are of concern to the contemporary Orthodox Jews society. In recent years I have received guidance from Rav Moshe Sternbuch of the Eidah Charedis