Jul 14, 2009 · Human emotional expressions, such as laughter, are argued to have their origins in ancestral nonhuman primate displays [1–6]. To test this hypothesis, the current work examined the …

Dec 1, 2025 · Laughter, a complex vocalization, often seems a uniquely human expression of joy. Scientists have long questioned if this behavior extends to our closest primate relatives. Exploring …

The occurrence of play vocalizations and human laughter in comparable situations such as wrestling and tickling and the ex- istence of similarities in the acoustic structure, however, provides further …

Aug 13, 2024 · This chapter discusses the social functions of smile and laughter-like expressions in primates, tracing their evolutionary origins. The authors suggest that these behaviors likely emerged …

Dec 1, 2021 · Modern humans and nonhuman primates share to some extent cognitive components such as communication, social behavior, vocalization, gestures, categorization, or memory systems …

Jun 30, 2023 · Thus, as best as we can tell, among primates at least, laughter-like vocalizations are limited to the great apes, making laughter roughly 16 million years old and highly correlated with …

Jun 10, 2015 · These results suggest for the first time that a nonhuman primate can use facial expressions to communicate without making a sound, the researchers report June 10 in PLOS ONE.

May 12, 2025 · The earliest evidence of laughter in biology is found in our primate relatives. Chimpanzees, bonobos, and gorillas exhibit laughter-like vocalizations during play.

Jun 24, 2024 · Provine (2000) found that laughter in humans and play vocalizations in other primates share similarities, suggesting a common ancestor. Laughter in primates typically occurs during play, …

Sep 15, 2019 · Throughout recorded history, laughter is most commonly associated with humor, resulting in some theories suggesting it evolved alongside, or immediately after, language. This is …