Geoff Greif

Geoff Greif‌Geoffrey L. Greif, Professor, Co-Chair, Clinical Concentration

Dr. Geoffrey Greif is a Professor at the University of Maryland School of Social Work where he has worked since 1984. He was Associate Dean from 1996 to 2007. He received his MSW from the University of Pennsylvania and his PhD from the Columbia University School of Social Work. He is the author of more than 150 journal articles and book chapters and fifteen books including four that are co-edited. These include: When Parents Kidnap (co-authored with Dr. Rebecca Hegar); Single Fathers; Beating the Odds: Raising academically successful African American males (written with Drs. Freeman Hrabowski and Ken Maton); Overcoming the Odds: Raising academically successful African American young women (written with Hrabowski, Maton, and Monica Greene); and Group work with populations at risk (co-edited with Dr. Carolyn Knight).

Within the past few years, Dr. Greif has explored horizontal relationships with the publications of Buddy System: Understanding male friendships, Two Plus Two: Couples and their couple friendships (with Dr. Kathleen Holtz Deal) and Adult Sibling Relationships, written with Dr. Michael Woolley (2016). A new book, In-law relationships: Mothers, daughters, fathers, and sons was published in 2021. In 2001, Dr. Greif chaired Governor Parris Glendening’s Commission to study sexual orientation discrimination in Maryland. Between 2011 and 2016, Dr. Greif co-led a fathering group for federal detainees at the Chesapeake Detention Center in Baltimore and, more recently, ran a group for fathers at Christopher Place.

He is a member of various community-based boards, including the Open Society Institute Leadership Council and the Shriver Hall Concert Series, where he chaired the board. He also served on the Board of Social Work Examiners in Maryland and the board of WYPR, the local National Public Radio Station. His current research, teaching, and practice interests include child abduction, family therapy, adult friendships, adult family relationships, and interracial families. He has received more than 20 Dean’s teaching awards from the School of Social Work. In 2007, he was named the Educator of the Year by the Maryland Chapter of NASW and in 2010 he received the University of Maryland Board of Regents Excellence in Teaching Award. In 2018, he was named the UMB teacher of the year and in 2020 he was inducted as a fellow into the American Academy of Social Work and Social Welfare. He has appeared on numerous television and radio programs and his research has been cited in major news outlets throughout the world.

Read Dr. Greif's Blog at Psychology Today

Contact Information:
Phone: (410) 706.3567
Room: 3W01
Greif CV

Mailing Information:
UM School of Social Work
525 West Redwood Street
Baltimore, Maryland 21201


MSW, University of Pennsylvania 
PhD, Columbia University

Expertise and Research Interests

Family Therapy
Group Work
Child Abduction
Single Parents


Board Member of WYPR, the Baltimore NPR radio station
Open Society Leadership Council
Kansas City Jammers
Shriver Hall Concert Series

Honors and Awards

University of Maryland Board of Regents Excellence in Teaching Award for 2009-2010
Educator of the Year, Maryland Chapter, NASW 2007
Student Government Association Exemplary Faculty Member, UMB SSW 2005
Who's Who in America, 2006
Who's Who Among America's Teachers (8th Edition), 2006.

Recent Publications


Greif, G. L. (2009). Buddy system: Understanding male friendships. New York: Oxford University Press.

Greif, G. L. & Ephross, P. H. (Editors). (2011). Group work with populations at risk Third Edition. New York: Oxford University Press.

Greif, G. L. & Deal, K. H. (2012). Two plus two: Couples and their couple friendships. New York:Routledge Press.

Greif, G. L. & Woolley, M. (2016). Adult sibling relationships. New York: Columbia University Press.

Greif, G. L. & Knight, C. (Editors). (2017). Group work with populations at risk, Fourth Edition. New York: Oxford University Press. 

Greif, G. L. & Woolley, M. E. (Under contract). Women’s and men’s in-law relationships. New York: Oxford University Press.


Refereed Journal Articles

Greif, G. L. (2014). “The Voices of Fathers in Prison: Implications for Family Practice.” Journal of Family Social Work, 17, 68-80.

Greif, G. L. & Waters, S. C. F. (2014). “Ambiguous reunification: A case illustration and a framework for understanding the aftermath of abduction.” International Family Law, Policy and Practice, 2, 24-31.

Greif, G. L. & Woolley, M.E. (2015). "Patterns in adult sibling relationships after the death of one or both parents." Journal of Social Work in End-of-life and Palliative Care.11, 74-89.

Greif, G. L. & Woolley, M. E. (2016). “Considering Adult Siblings in Substance Abuse Treatment.” Social Work, 61, 366-368.

Greif, G. L. & Woolley, M. E. (2018). The Father-in-law’s Relationship with his Son-in-law: A Preliminary Understanding. Smith College Studies in Social Work, 88,152-173.

Greif, G. L. & Woolley, M. E. (2019). Sons-in-Law and their Fathers-in-Law: Gaining a Preliminary Understanding of an Understudied Family Relationship. Journal of Family Social Work, 22, (published on-line/awaiting journal assignment)

Woolley, M.E. & Greif, G. L. (2019). Mother-in-law Reports of Closeness to Daughter-in-law: The Determinant Triangle with the Son/Husband. Social Work, 64, 73-81.

Greif, G. L. & Woolley, M. E. (In Press). Daughters-in-law and their mothers-in-law: Triangles, ambiguity, and relationship quality. Social Work Research.

Greif, G. L., Leitch, J., & Woolley, M.E. (In Press). A Preliminary Look at Relationships between Married Gays and Lesbians and Their Parents-In-Law: Five Case Studies. Journal of Gay and Lesbian Social Services.