Social enhancement of laughter: an experimental analysis of some companion variables.

Abstract Three experiments, investigate companion influences on humorous laughter and smiling. Boys and girls, aged 7 to 9 years, were played humorous recordings through headphones in dyadic and solitary conditions. Experiment I demonstrates that social facilitation effects in laughter and smiling reported in Chapman (1973) generalize to cases where a 2-year age/status difference exists between naturalistic coactors. In Experiments II and III companions were confederates, 2 years senior to subjects. They responded to directions relayed through headphones (coaction conditions) or a concealed speaker (audience conditions). It is shown in Experiment II that subjects' laughter, smiling, and looking are facilitated by increases in the laughter and smiling of coactors and, in Experiment III, that audiences are less effective in promoting high levels of responses. While increments in the coactor's looking enhance smiling and looking, corresponding increases in laughter are not statistically significant. Humor-ratings are associated with behavioral responses in Experiment II, but not Experiment III. Interaction data and results from subsidiary conditions are discussed.