Here is what the page “Indiana University Study Finds Laughter Boosts Reward Value in Orangutans” contains. A new study from Indiana University reveals that positive emotions, such as hearing laughter, can make orangutans place greater value on rewards they have learned to associate with certain tasks. Led by postdoctoral researcher Daan Laméris in the lab of Professor Erica Cartmill, the research highlights how mood influences decision-making in great apes, shedding light on the evolutionary roots of human emotional biases. The findings suggest that affect—how an individual feels—plays a key role in shaping learning and motivation, not just in humans but in our closest relatives.
This matters because understanding emotional influences on animal cognition can improve welfare practices in zoos and sanctuaries, where positive experiences may enhance engagement and well-being. The study, conducted at IU Bloomington, adds to a growing body of evidence that emotions are deeply intertwined with cognitive processes across species. The full version stays on the original page, which this listing opens directly.