Marcellus M. Merritt

Stress, coping, and health outcomes among African-Americans: a review of the John Henryism hypothesis

The John Henryism (JH) hypothesis argues that prolonged high-effort coping with chronic psychosocial stressors may be associated with elevated risk for negative health outcomes among those without sufficient socioeconomic resources. Early JH studies found a significant association between high JH, low socioeconomic status, and hypertension among African-Americans. More recently, these findings have been extended to a wide array of health status outcomes, including cardiovascular reactivity, neurohormonal secretion, and negative health behaviors. The present review provides a comprehensive overview of JHs conceptual bases and empirical support. Limitations of the construct are discussed and recommendations are made to guide future theoretical and research efforts in the area.

Perceived Racism and Cardiovascular Reactivity and Recovery to Personally Relevant Stress

This study evaluated cardiovascular responses (CVR) to an active speech task with blatantly discriminatory (BRC) versus neutral (NRC) stimuli and an anger recall task in a sample of Black men (N = 73; age 18 to 47). Diastolic blood pressure scores were higher for NRC versus BRC stimuli during anger recall (p = .05). Moreover, persons in the NRC group who perceived high levels of racism (vs. no racism or BRC group) during active speech showed larger increases in blood pressure across postspeech rest, anger recall, and subsequent rest (p = .03). The notable elevation in CVR in response to an ambiguous event extends current models of racism suggesting that subtle racism is a psychosocial stressor that erodes health through chronically elevated CVR.

Perceived Racism and Affective Responses to Ambiguous Interpersonal Interactions among African American Men

The current study examined affective responses to ambiguous interpersonal interactions containing both ambiguous and overtly racist content. Participants included 74 African American males (ages 18-47), half of whom heard a depiction of a negative social interaction with blatantly racist content (BRC). The remaining participants heard a similar scenario containing no racist content (NRC). Negative affect scores were higher for those in the BRC group, yet individuals in the ambiguous (NRC) condition who reported perceptions of racism in the scenario showed greater negative affect reactivity than those who saw no racism in the scenario. Among those in the NRC group, self-reported past experiences with racial discrimination moderated the effect of perceived racism on negative affect. The authors conclude that the perception of racial discrimination, in particular when evaluating ambiguous situations, may have profound affective consequences for Black men.

Ethnicity, education, and the cortisol response to awakening: a preliminary investigation.

Objective. To explore the associations among ethnicity, educational attainment, and cortisol secretion. Design. Participants included 63 white (n=31) and African-American (n=32) adult men and women. Subjects provided salivary cortisol samples immediately upon awakening and again, 30 minutes later. Results. Analyses adjusted for relevant covariates revealed a steeper awakening response among whites with higher education compared to other groups. Cortisol levels were significantly lower among African-American participants with lower levels of education. All effects were independent of perceived stress. Conclusions. These preliminary findings demonstrate significant ethnic and education-related differences in awakening cortisol secretion responses. Our data highlight the importance of considering ethnicity and the moderating effects of social class when examining the associations among social contextual factors and cortisol secretion.

Cardiovascular Emotional Dampening: The Relationship between Blood Pressure and Recognition of Emotion

Objective: Persons with elevated blood pressure (BP) show dampened emotional responses to affect-laden stimuli. We sought to further examine cardiovascular-emotional dampening by examination of the relationship between resting hemodynamic measures and recognition of emotion in an African American community-based sample. Methods: Participants were 106 African American men and women (55 women; mean age = 52.8 years), mainly low in socioeconomic status, and part of the Healthy Aging in Nationally Diverse Longitudinal Samples pilot study. Participants evaluated emotional expressions in faces and sentences using the Perception of Affect Test (PAT). Resting BP, total peripheral resistance (TPR), cardiac output, and heart rate were obtained continuously using a Portapres BP monitor. Results: Total PAT scores were inversely related to systolic (r = −0.30) and diastolic (r = −0.24) BPs, TPR (r = −0.36), and age (r = −0.31; p values < .01) and were positively related to cardiac output (r = 0.27) and education (r = 0.38; p values < .01), as well as with mental state (r = 0.25) and body mass index (r = −0.20; p values < .05). Accuracy of emotion recognition on the PAT tasks remained inversely related to TPR and BP after adjustment for demographic variables, medication, mental state, and body mass index. Conclusions: Elevated BP and TPR were associated with reduced perception of affect. TPR was the most consistent independent hemodynamic correlate of emotional dampening for the PAT scores. These results suggest potentially important links among central nervous system regulation of emotions, hemodynamic processes, and hypertension development.BP = blood pressure; CNS = central nervous system; PAT = Perception of Affect Test; HANDLS = Healthy Aging in Nationally Diverse Longitudinal Samples; SES = socioeconomic status; CV = cardiovascular; HR = heart rate; TPR = total peripheral resistance; CO = cardiac output; SBP = systolic blood pressure; DBP = diastolic blood pressure; MMSE = Mini-Mental State Examination

Personality Traits and Sex Differences in Emotion Recognition among African Americans and Caucasians

This study investigated the role of personality traits and sex differences in emotion recognition. In several studies using samples with mostly young Caucasian and Asian students, Matsumoto et al.1 found strong evidence that recognition of emotional expression in faces was related to Openness to Experience and, to a lesser extent, Conscientiousness. Openness is one of the major dimensions of the five-factor model2 (FFM) of personality that might play an important role in the recognition of emotion. Open individuals tend to be intellectually curious, imaginative, and sensitive to aesthetics and inner feelings. The present study seeks to replicate Matsumoto et al. and extend the findings to an older African American and an older Caucasian sample. Furthermore, this study tests whether the relation between personality traits and emotion recognition can be replicated with a purely verbal task. Finally, the hypothesis that women tend to be better than men in decoding facial expressions of emotion will be tested.

How much striving is too much? John Henryism active coping predicts worse daily cortisol responses for African-American but not White female dementia family caregivers

INTRODUCTIONnThe John Henryism active coping (JHAC) hypothesis suggests that striving with life challenges predicts increased risk for cardiovascular disease for those with scarce coping resources. This study examined the moderating role of JHAC in the associations of 1) caregiver status and 2) care recipient functional status with diurnal salivary cortisol patterns among 30 African Americans (AAs) and 24 white female dementia caregivers and 63 noncaregivers (48 AAs).nnnMETHODSnCaregiver participants completed the JHAC-12 scale, Activities of Daily Living (ADL) scale, and Revised Memory and Behavior Problem checklist (RMBPC) and collected five saliva samples daily (at awakening, 9 A.M., 12 P.M., 5 P.M., and 9 P.M.) for 2 successive days.nnnRESULTSnUnivariate analysis of variance tests with mean diurnal cortisol slope as the outcome illustrated that among AA caregivers, higher JHAC scores were related to flatter (or more dysregulated) cortisol slopes. The JHAC by ADL and JHAC by RMBPC interactions were each significant for AA caregivers. Among AA caregivers who reported higher ADL and RMBPC scores, higher JHAC scores were associated with flatter cortisol slopes.nnnCONCLUSIONSnThese findings extend recent studies by showing that being AA, a caregiver, and high in JHAC may elevate the risk for chronic disease, especially for those with higher patient ADL and behavioral problems. Thus, it is imperative that interventions appreciate the pernicious role of high-effort coping style, especially for AA caregivers, to minimize the stressful side effects of patient ADL and memory and behavioral problems for the caregiver.

Too much of a good thing?: Positive religious coping predicts worse diurnal salivary cortisol patterns for overwhelmed African American female dementia family caregivers.

OBJECTIVESnReligious coping arguably prevents negative health outcomes for stressed persons. This study examined the moderating role of religious coping (positive, negative, and combined) in the connection of care recipient functional status with diurnal salivary cortisol patterns among dementia family caregivers.nnnMETHODSnThirty African American (AA) female dementia caregivers and 48 AA noncaregivers completed the Religious Coping (RCOPE) scale, the Activities of Daily Living scale, and the Revised Memory and Behavior Problem Checklist (RMBPC) and collected five saliva samples daily (at awakening, 9 A.M., 12 P.M., 5 P.M., and 9 P.M.) for 2 straight days.nnnRESULTSnHierarchical regression tests with mean diurnal cortisol slope as the outcome illustrated surprisingly that higher combined and positive (but not negative) RCOPE scores were associated with increasingly flatter or worse cortisol slope scores for caregivers (but not noncaregivers). Of note, the RCOPE by RMBPC interaction was significant. Among caregivers who reported higher RMBPC scores, higher combined and positive (but not negative) RCOPE scores were unexpectedly associated with increasingly flatter cortisol slopes.nnnCONCLUSIONSnThese results extend current findings by showing that being AA, a caregiver, and high in positive religious coping may predict increased daily stress responses, mainly for those with higher patient behavioral problems. Because religious coping is a central coping strategy for AA caregivers, it is vital that epidemiologic assessments of religious coping in health and aging as well as tailored interventions focus on the unique reasons for this disparity.

Absorption in Self-Selected Activities Is Associated With Lower Ambulatory Blood Pressure but Not for High Trait Ruminators

BACKGROUNDnA range of nonpharmacological interventions (e.g., meditation) have positive effects on blood pressure (BP) but tend to have poor adherence. These interventions may lower BP partly by absorbing and directing attention away from ones negative thoughts. We hypothesized that recurring self-selected activities (SSAs) that are attentionally absorbing may similarly lower BP. We examined the effect of reported engagement in SSAs during the previous month prior to participation on ambulatory BP (ABP) and whether those prone to rumination were less likely to show these effects.nnnMETHODSnParticipants (n = 38) reported engagement in SSAs and how absorbing they were, responded to trait rumination and perceived stress questionnaires, wore an ABP monitor for 24 hours, and at each ABP measurement answered electronic diary questions assessing activity levels, affect, social interactions, and caffeine and tobacco use.nnnRESULTSnRegression analyses tested whether the reported absorption of SSAs, trait rumination, and their interaction predicted daytime and nighttime systolic and diastolic ABP. Greater absorption predicted lower daytime and nighttime ABP (bs = -18.83 to -8.79; Ps < .05), but this relationship was moderated by trait rumination (bs = 3.72 to 9.97; Ps < .05). Follow-up analyses revealed that absorption was unrelated to ABP for those with high trait rumination but that more absorption predicted lower ABP for those less prone to rumination.nnnCONCLUSIONSnOur results suggest that regular engagement in absorbing SSAs is related to lower ABP. These findings have implications for the development of nonpharmacological interventions and suggest SSAs may serve as an adjuvant intervention strategy to lower BP.

Dimensions of self-selected leisure activities, trait coping and their relationships with sleep quality and depressive symptoms

Abstract Although leisure is presumed to be beneficial, certain profiles of leisure may be especially good. This paper tests whether dimensions of self-selected leisure activities (SSLAs) differentially relate to depressive symptoms and poor sleep quality, including (a) positivity (SSLA-PO), (b) difficulty (SSLA-DF), (c) distraction (SSLA-DI) and (d) thinking about negative events (SSLA-TN). Furthermore, it tests whether those low in perseverative cognitions (PCs) and high in ‘John Henryism’ active coping are equally likely to benefit from leisure. Participants (n = 362, 76% female) at a large university in Wisconsin rated two SSLAs on the dimensions above and completed measures of depression, sleep quality, PCs and active coping. Regression analyses showed that SSLA-TN predicted greater depression and poor sleep quality. For the moderators, more SSLA-DI and SSLA-TN each predicted greater depression for those more prone to PCs, and more SSLA-DI predicted more depression and worse sleep quality at lower active coping levels. Results suggest that not all leisure is equally beneficial, and have implications for the design of leisure-based interventions.