influences (As). A similar pattern was observed for Superstition. Unlike our study, a previous study of female adults15 reported dimension-specific genetic effects for most OC dimensions. However, both ours and this previous study reported that unique environment accounted for most of the variance specific to each dimension (Es), suggesting that environment and potentially error (which is not separable in ACE models) are the biggest contributors to making dimensions different. One implication is that genetics may play a larger role in what makes dimensions similar, whereas unique environment may play a bigger role in what makes dimensions different.
