This study investigated the effects of visual adaptation to over-, under- or neither over- nor under-weight images of women on perceived own size, in 18 to 25 year olds. Healthy adult women (n = 90), with normal BMI (range 19-25 km/m2), were randomised to be visually adapted to photographs of the same women, altered to appear either over-, under- or neither over- nor under-weight. Participants in this study were consented under procedures that did not include consent for data to be made open.