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This study revealed that trait communication apprehension, as measured by the Personal Report of Communication Apprehension , correlates significantly with state anxiety, as measured by the Spielberger state anxiety measure, in each of four contexts. The multiple correlation between PRCA and state anxiety across four situational contexts was .69. The results are interpreted as consistent with the theoretical relationships advanced and as supportive of the PRCA as a cross-situational predictive instrument.

The extant research examining the relationship between public speaking trait anxiety and heart rate has produced mixed findings. Some studies observe only weak relationships, whereas others report significant relationships between these variables. H. ].Eysenck has maintained that the degree of relationship between traits and heart rate depends on the stress levels under which the respondents perform when heart rate data are collected. An inspection ofthe existing studies shows that, consistent with Eysenck's observation, the studies reporting relationships between public speaking trait anxiety and heart rate were conducted under relatively low-intensity conditions in comparison to those reporting no such relationships. In the present study, heart rates of both anxious and nonanxious speakers were measured under both high-and low-intensity conditions. Results indicated that (a) heart rates of anxious speakers were significantly higher than those of nonanxious speakers when both performed under low-intensity conditions, but (b) heart rates were not diflerent for anxious and nonanxious speakers when pmforming in high-intensity environments. These results providea reconciltdion of theinconsistent research findings and partially support the extension of Eysenck's conceptualization to communication apprehension t h w y and research.ince Clevenger's (1959) observation that measures of cognitively experienced anxiety and physiological arousal appear S unrelated in public speaking situations, researchers have made conceptual advancements and methodological refinements in an effort to produce stronger relationships between these variables