A multidimensional measurement model for cardiovascular reactivity: stability and cross-validation in two adult samples.
The factor structure for measures of stress-related cardiovascular reactivity was examined in 2 samples: a university campus employee sample (N = 72) and a sample of young adult twins (N = 113). In both samples, 5 noninvasive cardiovascular measures were monitored during a series of challenging laboratory tasks. We developed a 2-factor model depicting vascular and cardiac influences on responding. With confirmatory factor analysis, this model was shown to be consistent with the data across both samples, across 2 testing sessions, and across 2 sets of tasks. Latent variables measuring cardiac and vascular reactivity were highly reliable on retest as well. Individual differences in cardiovascular reactivity to mental stress may be characterized by a stable, 2-dimensional pattern of response.
Kamarck
T W
TW
Department of Psychology, University of Pittsburgh, Pennsylvania 15260.
Jennings
J R
JR
Pogue-Geile
M
M
Manuck
S B
SB
D000293:Adolescent; D000328:Adult; D001794:Blood Pressure; D002302:Cardiac Output; D002318:Cardiovascular Diseases / Q000517:prevention & control / Q000523:psychology*; D003710:Demography; D005163:Factor Analysis, Statistical; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D008955:Models, Cardiovascular; D011581:Psychological Tests; D013315:Stress, Psychological / Q000503:physiopathology*; D014427:Twins