Laughter Responsiveness and Acoustic Alignment in Parent-Child and Adult-Adult Interaction
Résumé
While alignment in laughter production has been shown in
adults, its presence in children remains understudied. We examined
laughter responsiveness and acoustic alignment in middle
childhood, comparing parent-child and parent-adult computer mediated
conversations. While no significant differences were
found in laughter frequency, antiphonal laughter was less frequent
in parent-child interactions, despite intra-dyadic balance.
Acoustic analysis revealed an increase in low-frequency spectral
modulations in antiphonal laughter. To test whether this was
due to local alignment with the preceding laughter, we compared
distances from genuine and pseudo-random initiating antiphonal
laughter pairs. In parent-adult interactions, genuine
laughter pairs exhibited greater acoustic similarity than pseudorandom
pairs, a pattern absent in parent-child interactions. Our
study contributes to discussions on alignment theories and the
role of laughter in pragmatic development.
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