Cleanliness and health are highly valued, and individuals lacking these qualities often elicit negative attitudes (Speltini & Passini, 2014). To measure 5-9 year-olds’ attitudinal biases towards unhealthy and unclean people, participants were shown pictures of “twin” children. One twin was dirty or sick (spilled soup or vomit on white shirt); the other was clean or healthy (white shirt). A series of tasks measured implicit and explicit biases. Children were less likely to trust the sick child compared to the healthy child, p<0.001. However, the difference in selective trust was less evident between the clean and dirty twins, p=0.055. Participants tended to allocate favorable items to the clean twin, p=0.007, while allocating unfavorable items to the dirty twin, p=0.006, but did not differentially allocate resources between healthy and sick twins, ps>0.8. Overall, young children favor clean and healthy individuals, but in differing situations. This project was made possible by funding from F&M's Hackman Summer Scholars Program, the American Psychological Association Summer Undergraduate Psychology Research Experience Grants, and the American Philosophical Society Franklin Research Grant.