We examined sex differences in the prevalence, incidence, reasons for, and consequences of infidelity. Participants (Study 1, 543 undergraduates in the Northwestern US; Study 2, 313 undergraduates and 233 community members in the Mid-Atlantic US), reported on infidelity by questionnaire. Using a broad definition of cheating, women reported being as unfaithful or more unfaithful than men. Men were more suspicious about cheating and more likely to discover the cheating than women. Women were more likely to break up with their partners, to begin new relationships after cheating, and to report reasons for cheating that may indicate a desire to switch long-term mates, such as being unhappy in the current relationship. Results are discussed in the context of evolutionary theory.

Investigation provided evidence that a resilience-focused intervention can improve psychological health and adjustment after TBI. Additional research is needed to ascertain the longer term benefits of intervention and the efficacy of alternative delivery methods (e.g., via telephone, Internet).

Individuals with TBI are at risk for low resilience, which was found to correlate with psychological distress and psychosocial maladjustment. Developing interventions to strengthen resilience skills has the potential to improve postinjury psychosocial adjustment, an important area for future research.

Objective: To examine the effectiveness of an intervention (Therapeutic Couples Intervention, TCI) designed to improve relationship quality for couples after acquired brain injury. Setting: Outpatient brain injury rehabilitation center. Participants: Persons with brain injury (n = 75) and their intimate partners (n = 75). Design: Two-arm parallel, randomized, controlled trial with wait-listed control. Methods: Composed of 5 to 6 2-hour sessions, the TCI is a manualized, treatment program designed to enhance relationship quality by addressing issues and concerns most often identified by persons with brain injury and their partners. Main Measure: Revised Dyadic Adjustment Scale completed by the persons with brain injury and their partners. Results: Persons with brain injury and their partners in the treatment group showed an improvement in relationship quality, both compared with their own baseline values and the control group. Conclusions: Investigation provided evidence that a curriculum-based education, skill-building, and supportive intervention can benefit couples for up to 3 months after treatment. Additional research is needed to ascertain the long-term benefits of intervention and the efficacy of alternative delivery methods (eg, Internet, telephone, and group).