The current studies aimed to find out whether a nonintentional form of mood
contagion exists and which mechanisms can account for it. In these experim
ents participants who expected to be tested for text comprehension listened
to an affectively neutral speech that was spoken in a slightly sad or happ
y voice. The authors found that (a) the emotional expression induced a cong
ruent mood state in the listeners, (b) inferential accounts to emotional sh
aring were not easily reconciled with the findings, (c) different affective
experiences emerged from intentional and nonintentional forms of emotional
sharing, and (d) findings suggest that a perception-behavior link (T. L. C
hartrand & J. A. Bargh, 1999) can account for these findings, because parti
cipants who were required to repeal the philosophical speech spontaneously
imitated the target person's Vocal expression of emotion.