Play can be defined as spontaneous, repeated behaviour without any obvious function that is performed in a low-stress setting. While play behaviours may be similar to functional behaviours like fighting or hunting, they differ in their context or structure. Play may be solitary or social, depending on the circumstances, and involve those in all age groups. Play is critical to the development of motor, cognitive, language, emotional, and social skills. Playfulness as a personality trait varies across individuals and has been linked to wellbeing and psychological resourcefulness.

This Collection will bring together primary research articles on all aspects of play and playfulness, including their psychological, anthropological, sociological, historical and cultural basis.