We only have this paper's title and publication details.
Read it at the source(1971). Heart rate as an index of speech anxiety. Speech Monographs: Vol. 38, No. 1, pp. 65-69.
No takes yet. Share an insight, caveat, or question.
Behnke et al. (1971) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: