Abstract
Kok, B. E., Coffey, K. A., Cohn, M. A., Catalino, L. I., Vacharkulksemsuk, T., Algoe, S. B., . . . Fredrickson, B. L. (2013). How positive emotions build physical health: Perceived positive social connections account for the upward spiral between positive emotions and vagal tone. Psychological Science, 24, 1123–1132. (Original DOI: 10.1177/0956797612470827)
This article used data that were also the basis of an earlier article (Kok & Fredrickson, 2010). Kok et al. did not indicate this fact in their article.
Kok, B. E., & Fredrickson, B. L. (2010). Upward spirals of the heart: Autonomic flexibility, as indexed by vagal tone, reciprocally and prospectively predicts positive emotions and social connectedness. Biological Psychology, 85, 432–436. doi:10.1016/j.biopsycho.2010.09.005