“…The majority of studies in the review (14 of 19) employed cognitively oriented nudges, with 6 studies (34,36,37,39,40,42) providing descriptive nutritional labelling only (e.g., mandated calorie labelling on the menu board and printed menus in fast food chains; 40), three studies (38,43,47) providing evaluative nutritional labelling only (e.g., trafficlight labelling of cafeteria items based on main ingredients, saturated fat and caloric content; 46), 3 studies (43,45,48) providing a combination of descriptive and evaluative labelling (e.g., a combination of nutrition labelling and health logos for healthier options in hospital cafeterias; 47), and one study providing visibility enhancements (44). Two studies (39,46) used an affectively oriented nudge (healty eating calls such as "Portion size matters"), and four studies [ (33,45,54); study 2 and 3] used behaviourally oriented nudges, such as convenience enhancement.…”