A Dyadic Analysis of Optimism, Pessimism, and Fear of Cancer Recurrence in Couples Coping With Early-Stage Breast...

Fear of cancer recurrence (FCR) is a common yet unaddressed concern among breast cancer (BC) survivors and their intimate partners. Moderate-to-severe FCR has been associated with numerous negative health outcomes and diminished functioning among survivors and their intimate partners. Therefore, it is essential to understand what factors are associated with higher FCR for both patients and partners. Dispositional traits, such as optimism and pessimism, have been associated with FCR severity at the individual (intrapersonal) level. However, few studies have focused on this link in a dyadic, interpersonal context. To address this gap, the present study sought to investigate the association between optimism, pessimism, and FCR in BC survivors and their intimate partners.

Optimism, pessimism, and FCR were assessed for 79 couples (n = 158 paired individuals) in which one partner was an early-stage BC survivor who had recently completed adjuvant treatment. The intrapersonal (actor) and interpersonal (partner) associations between optimism or pessimism and FCR were simultaneously investigated using actor-partner interdependence modeling.

A significant positive intrapersonal effect was observed between pessimism and FCR for both survivors and partners, but not between optimism and FCR. No significant interpersonal effects were observed between either optimism or pessimism and FCR.

Findings indicated that higher levels of pessimism (rather than optimism) are uniquely associated with higher FCR in early-stage BC survivors and their partners. Understanding the role of pessimism in FCR susceptibility will allow for more efficient and timely support of BC survivors and their intimate partners following a cancer diagnosis.