“…Previous work (e.g., Contrada, Glass, Krakoff, Krantz, Kehoe, Isecke, Collins, & Elting, 1982;Dembroski et al, 1978;Glass, Krakoff, Finkelman, Snow, Contrada, Kehoe, Mannucci, Isecke, Collins, Hilton, & Elting, 1980;Williams et al, 1982) has shown A/B differences in SBP, HR, and neuroendocrine responses to a variety of challenging and stressful situations. On the other hand, at least two earlier studies failed to detect blood pressure and heart rate differences between A's and B's during serial subtraction (Diamond & Carver, 1980;Williams et al, 1982). It is possible, therefore, that something about mental arithmetic militates against obtaining A/B differences on these measures.…”