Jordan Beardslee, Meagan Docherty, Edward Mulvey, Carol Schubert, Dustin Pardini
Childhood risk factors associated with adolescent gun carrying among Black and White males: An examination of self-protection, social influence, and antisocial propensity explanations
Law and human behavior
scientifically sound methods investigating dietary consumption patterns selfserve salad bars needed inform school policies programs examine reliability validity digital imagery determining starting portions plate waste selfserve salad bar vegetables variable starting portions compared manual weights laboratory setting 30 mock salads 73 vegetables made consumption simulated component initial removed portion weighed photographs weighed reference portions pre postconsumption mock salads taken seven trained independent raters visually assessed images estimate starting portions nearest cup percentage consumed 20 increments values converted grams comparison weighed values intraclass correlations weighed digital imageryassessed portions plate waste used assess interrater reliability validity pearsons correlations weights digital imagery assessments also examined paired samples tests used evaluate mean differences grams digital imageryassessed portions measured weights interrater reliabilities excellent starting portions plate waste digital imagery accuracy intraclass correlations moderate lower accuracy determining starting portions leafy greens compared vegetables however accuracy digital imageryassessed plate waste excellent digital imagery assessments significantly different measured weights estimating overall vegetable starting portions waste however digital imagery assessments slightly underestimated starting portions 35 g waste 21 g leafy greens investigation provides preliminary support use digital imagery estimating starting portions plate waste school salad bars results might inform methods used empirical investigations dietary intake schools selfserve salad bars