Additional file 1: Figure S1. of The international food unit: a new measurement aid that can improve portion size estimation

Food portions (s; solid, a; amorphous; l; liquid). Table S1. Details of food portions. Table S2. Portion size estimation aids used in the experiment. Table S3. Helpfulness and ease of use of the three PSEAs used in this study. Table S4. Foods subjects found the easiest/most difficult to estimate by experimental condition. (DOCX 761 kb