Home › Authors › Douglas H. Sprenkle 👤 Douglas H. Sprenkle 6 books Books by Douglas H. Sprenkle Circumplex Model 2014 Common factors in couple and family therapy 2009 Research Methods in Family Therapy, Second Edition 2005 Effectiveness Research in Marriage and Family Therapy 2002 Research Methods in Family Therapy 1996 Special issue-- the effectiven Special issue-- the effectiveness of marital and family therapy 1995