The present investigation extends previous work on the relationship between daily stressors and memory failures in a naturalistic setting by examining whether this relationship varies across levels of neuroticism. A daily diary study of 333 older adults (mean age = 73.27 years, SD = 7.17) in the Veterans Affairs Normative Aging Study (see A. Spiro & R. Bossé, 2001, for additional information) was used to examine whether there were neuroticism differences in cognitive reactivity to daily stressors. Multilevel models indicated that on days when people high in neuroticism experienced stressors, particularly interpersonal stressors, they were more likely to report memory failures compared to those who were lower in neuroticism. The findings may have important implications for age-related cognitive decline. Keywords neuroticism; daily stressors; interpersonal stressors; memory failures; intraindividual variability Neuroticism, and the constant elevated levels of negative affect that accompany the trait over years or decades, can lead to a negative emotion "hair trigger" in older adulthood (Kendler, Thornton, & Gardner, 2001;. This process suggests that as people high in neuroticism grow older, they become more susceptible to elevated negative affect. Therefore, they may become hypersensitive to stress. Indeed, Mroczek, Spiro, Griffin, and Neupert (2006) reported that older adults high in neuroticism were the most reactive to stressors (compared with younger and middle-aged adults). More recently, Mroczek and Spiro (2007)
NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript neuroticism in older men were associated with elevated mortality risk, which points to the potential of high neuroticism to influence physical health outcomes. Mroczek and Spiro (2003) also found that older men with high levels of neuroticism complained of more memory problems than did those with low levels of neuroticism. Given these findings and the previously documented associations between laboratory-based stressors and cognition (e.g., Lupien & Lepage, 2001;McEwen, 2000;Sapolsky, 1999) as well as naturalistic stressors and memory failures (Neupert, Almeida, Mroczek, & Spiro, 2006a), it is important to examine whether older adults high in neuroticism exhibit patterns of hypersensitivity to daily stressors with respect to their daily memory. Although this process of hypersensitivity is often observed for negative affect, it has yet to be established with daily memory failures. Because the sample in the present study consisted of older adults, we were able to examine this process in people for whom age-related declines in memory (whether real or perceived) might be particularly salient.The tendency of people high in neuroticism to react to stressful situations with high negative affect is called the stress reactivity effect (Bolger & Schilling, 1991;Suls, 2001), and it is perhaps the central concept in understanding individual differences in mood regulation (Mroczek et al., 2006). When people high in neuroticism ex...