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Showing papers by "Michael E. McCullough published in 2011"


Journal ArticleDOI
TL;DR: It is indicated that sample extraction is necessary to obtain valid assay results for plasma oxytocin measurement using a commercially available enzyme immunoassay (EIA) and radioimmunoASSay (RIA) to assess the immunospecificity of the assays.
Abstract: Objective There is increased interest in measuring peripheral oxytocin levels to better understand the role of this peptide in mammalian behavior, physiology, and disease. The purpose of this study was to compare methods for plasma oxytocin measurement using a commercially available enzyme immunoassay (EIA) and radioimmunoassay (RIA), to evaluate the need for sample extraction, and to assess the immunospecificity of the assays.

294 citations


Journal ArticleDOI
TL;DR: Elevated mean peripheral oxytocin reactivity was associated with increased post-conflict anxiety and decreased levels of forgiveness, corroborate previous research implicating oxytoc in as a neuroendocrine marker of relational distress, but not general stress, and demonstrate the utility of studying oxytocIn in response to naturally occurring relational events.

102 citations



Journal ArticleDOI
TL;DR: This is the first study showing that OT increases generosity in unilateral exchanges directed toward philanthropic social institutions, as opposed to immediate benefits directed at individuals or groups.

92 citations


Journal ArticleDOI
TL;DR: In this paper, the authors examined age differences in the disposition to forgive others and the role of interpersonal transgression frequency and intensity in interpersonal transgressions and found that older adults were more willing to forgive other adults than younger adults.

54 citations


Journal ArticleDOI
TL;DR: In this paper, a re-analysis tested whether changes in stress management skills at 6-month follow-up predict the magnitude of cortisol reductions at 12-months in a time-lagged analysis.
Abstract: Treatment for breast cancer affects psychological adaptation and related neuroendocrine stress indicators. Previously, a 10-week cognitive behavioral stress management (CBSM) group intervention decreased cortisol over 12-months among women receiving treatment for breast cancer. The current re-analysis tested whether changes in stress management skills at 6-month follow-up predict the magnitude of cortisol reductions at 12-months in a time-lagged analysis. Women (N = 128) with non-metastatic breast cancer recruited post-surgery were randomized to the CBSM intervention or 1-day psychoeducational seminar. Participants reported perceived CBSM skills and provided late afternoon blood samples for serum cortisol at baseline and 6- and 12-month follow-ups. Improved perceived ability to relax and use cognitive reappraisal skills at 6-months statistically mediated intervention-associated cortisol reduction from 6- to 12-months. This is the first study showing that improved perceived CBSM skills predict the magnitude of cortisol reductions over 1 year in this population and may guide development of more focused interventions.

30 citations


Journal ArticleDOI
TL;DR: Victims who perceived their transgressors as highly agreeable had lower cortisol responses following a simulated speech to the transgressor, and higher self-reported forgiveness, even after controlling for initial levels of forgiveness.

21 citations