K. Raikkonen et al., Effects of optimism, pessimism, and trait anxiety on ambulatory blood pressure and mood during everyday life, J PERS SOC, 76(1), 1999, pp. 104-113
This study tested whether dispositional measures of optimism, pessimism, an
d anxiety affected ambulatory blood pressure (BP) and mood and whether any
cardiovascular effects of dispositions were moderated by mood. Pessimistic
and anxious adults had higher BP levels and felt more negative and less pos
itive than did optimists or low anxious adults throughout the monitoring. T
he few times that optimists did feel negative were associated with levels o
f BP as high as those observed among pessimists or anxious individuals, reg
ardless of their mood. To the extent that trait anxiety measures neuroticis
m these findings suggest that neuroticism is directly related to health ind
icators rather than simply to illness behavior. Furthermore, the results su
ggest that pessimism has broad physiological and psychological consequences
.