First impressions: Researchers examine what’s being evaluated during - and prior to - a first dateWhen it comes to romantic relationships, it's difficult to overstate the importance of first impressions. A recent study published in the Proceedings of the National Academy of Sciences explored how initial impressions predict relational outcomes, including how the dating market's determinations of desirability shapes those initial opinions before couples even get a chance to see if they have any chemistry one-on-one.