In fact, Zietsch put a number
on it: Our
genes account for roughly 63 percent of
infidelity in males and 40 percent in females.
Her research projects and collaborations include 1) basic science studies
on commitment, cohabitation, aggression,
infidelity, family background, relationship processes and psychopathology, military families, and adolescent and child adjustment as well as 2) studies
on the effectiveness of preventive relationship interventions for couples and individuals (including
gene - environment interactions).