Much of the research regarding happiness and leisure relies on subjective well-being (SWB) as an appropriate measure of happiness. Research has demonstrated a wide variety of contributing and resulting factors in the relationship between leisure and happiness. These include psychological mechanisms, and the types and characteristics of leisure activities that result in the greatest levels of subjective happiness. Specifically, leisure may trigger five core psychological mechanisms including detachment-recovery from work, autonomy in leisure, mastery of leisure activities, meaning-making in leisure activities, and social affiliation in leisure (DRAMMA). Leisure activities that are physical, relational, and performed outdoors are correlated with greater feelings of satisfaction with free time. Research across 33 different countries shows that individuals who feel they strengthen social relationships and work on personal development during leisure time are happier than others. Furthermore, shopping, reading books, attending cultural events, getting together with relatives, listening to music and attending sporting events is associated with higher levels of happiness. Spending time on the internet or watching TV is not associated with higher levels of happiness as compared to these other activities.