From September 1967 to June 1969, Mercer held the position of
assistant professor at
Wheaton College in
Norton, Massachusetts. From there, she moved to
Buffalo, New York, to serve as assistant professor at
State University College, a position she held for two years before taking an assistant professorship at Richard Stockton College (now
Stockton University) in
Pomona, New Jersey, in September 1974. Mercer remained at the college, attaining a full professorship in 1981, until her retirement in 2006. She is currently
professor emerita of psychology at Stockton University. and are used without empirical support for their efficacy. These therapies, according to Mercer, involve techniques such as restricting food, restraining children so they cannot move and forcing them to do meaningless, difficult chores as punishment, and are practiced by people who "mistakenly equate obedience with attachment." In 2003, Mercer co-wrote
Attachment Therapy on Trial: The Torture and Death of Candace Newmaker, with Larry W. Sarner and Linda A. Rosa. The book is an in-depth exploration into the suffocation of
Candace Newmaker, a 10-year-old Colorado girl, during one such session. Mercer was a consulting reader for articles that appeared in the journal
Infants and Young Children (1992–2000), editor for the New Jersey Association for Infant Mental Health's newsletter,
The Phoenix (1994–1999), and contributor and consulting
editor for the
Scientific Review of Mental Health Practice, a journal published by the
Center for Inquiry. ==Major works==