Abstract
Blood Pressure -SBP-) of Internal-External Locus of Control (LOC) subjects while a physical-stress task (bicycle ergometer) was realyzed. The task was presented under different conditions: Without information about performance and with feedback about it (provided by a monitor) (Study I); and with self-administered feedback (the same procedure than in second condition of the previous study) and external feedback provided by the experimenter with harassment (Study II). According to the interactional character of the LOC construct, and taking into account that the self-administered feedback (condition 2 of the first study and 1 of the second one) promotes a greater task-controllability perception, the next results were obtained: (1) Internal subjects presented a higher HR reactivity in the more internal conditions of both studies, while the opposite pattern was showed by External subjects; and (2) there were no differences in SBP between both groups. The results were discussed considering the congruence between personal and situational characteristics.
