The article by Barbara L. Fredrickson addresses the underrepresentation of positive emotions in psychological research and proposes a new model to describe their form and function. Positive emotions, such as joy, interest, contentment, and love, are often marginalized in favor of negative emotions in theoretical development and empirical studies. This bias is attributed to several reasons: positive emotions are fewer in number, less differentiated, and less likely to occur in life-threatening situations. However, positive emotions play a crucial role in broadening an individual's momentary thought-action repertoire and building physical, intellectual, and social resources. The author reviews empirical evidence supporting the "broaden-and-build" model, which suggests that positive emotions expand one's attentional scope, cognitive flexibility, and behavioral repertoire, leading to the development of durable personal resources. Studies on attention, cognition, and action support these claims, showing that positive emotions enhance creativity, problem-solving, and physical and social interactions. The article calls for more research on positive emotions to improve understanding and interventions related to individual and collective functioning, psychological well-being, and physical health.The article by Barbara L. Fredrickson addresses the underrepresentation of positive emotions in psychological research and proposes a new model to describe their form and function. Positive emotions, such as joy, interest, contentment, and love, are often marginalized in favor of negative emotions in theoretical development and empirical studies. This bias is attributed to several reasons: positive emotions are fewer in number, less differentiated, and less likely to occur in life-threatening situations. However, positive emotions play a crucial role in broadening an individual's momentary thought-action repertoire and building physical, intellectual, and social resources. The author reviews empirical evidence supporting the "broaden-and-build" model, which suggests that positive emotions expand one's attentional scope, cognitive flexibility, and behavioral repertoire, leading to the development of durable personal resources. Studies on attention, cognition, and action support these claims, showing that positive emotions enhance creativity, problem-solving, and physical and social interactions. The article calls for more research on positive emotions to improve understanding and interventions related to individual and collective functioning, psychological well-being, and physical health.