In the last 15 years, a substantial number of studies have tested the theoretical validity of Bowen family systems theory. A review of this basic research provided empirical support for the relationship between differentiation and chronic anxiety, marital satisfaction, and psychological distress. Bowen's assumption that couples with the same level of differentiation marry was not supported. His specific theories of sibling position and triangulation also received little empirical support. Research on multigenerational transmission has generally ignored Bowen's theoretical perspective, and more research needs to test Bowen's claim that his theory is universal. In addition, researchers still need to examine the effect of differentiation on child functioning, physical health problems, and adaptability.

The term high conflict is used regularly across various literatures; such as divorce, family court, and psychotherapy; to describe relationships that are mired in conflict. Despite its widespread use, the term has not been precisely defined in a clinically meaningful way. This article offers a definition of high conflict based on a synthesis of previous literatures related to high conflict, observations of court personnel, and the authors' own clinical experiences working with this population. A case study illustrates the pervasive negative exchanges and hostile insecure emotional environment that characterize these couples. The implications of this definition for clinical practice are also discussed.

Relationships between grandparents and grandchildren provide an excellent framework for integrating family theory and family methodology. Systematic differences as a function of age, gender, life expectancy, and health as played out through generations suggest some topics are best studied by disentangling variability between and within families. Using data from 1,345 grandchildren (52% girls, mean age 13.69 years, range 9 to 20) reporting on 3,664 grandparents, we compare results obtained from studying grandparent-grandchild relationships individually and at the family level. Results suggest important predictors of relationship quality at the within-subject and between-subject levels. Future research should more carefully integrate each level into theory and design.

This study examines the relationship between the therapeutic alliance and distress using the couple rather than the individual as the unit of analysis. One hundred and seventy-three couples receiving treatment for relational distress at two university clinics participated in this study. The actor-partner interdependence model was used to analyze the relationship of each partner's between- and within-system alliance scores and distress at session four. Results provide support for actor effects on relational distress for both male and female partners and for actor effects on psychological distress for female partners. Limited support was found for partner effects on distress. Furthermore, results indicate that the alliance between partners is a stronger predictor of improvement in early sessions in comparison with the alliance between the individual and the therapist.

The Revised Dyadic Adjustment Scale (RDAS; Busby, Crane, Larson, & Christensen, 1995) is a measure of couple relationship adjustment that is often used to differentiate between distressed and non-distressed couples. While the measure currently allows for a determination of whether group mean scores change significantly across administrations, it lacks the ability to determine whether an individual's change in dyadic adjustment is clinically significant. This study addresses this limitation by establishing a cutoff of 47.31 and reliable change index of 11.58 for the RDAS by pooling data across multiple community and clinical samples. An individual whose score on the RDAS moves across the cutoff changes by 12 or more points can be classified as experiencing clinically significant change.