The Dezlphi methodolgy was used to explore common factors across theories of marriage and family therapy (MFT). Leading clinicians and researchers from the American Family Therapy Academy and select faculty members from MFT training programs accredited by the Commission on Accreditation frorm Marriage and Family Therapy Education were asked to achieve consensus regarding common factors. Respondents were asked to report on commonalities across the various MFT theories, as well as what they personally considered to be the core ingredients of change. A final profile of items was created from the responses. Qualitative interviews were conducted with selected panelists to clarify discrepancies as well as to add meaning to the data. Implications for the training and practice of MFTs as well as direction for future research are discussed.