It's a tricky issue. There's lots of studies showing that people form pretty meaningful impressions quickly, as you're saying, and I think speed dating captures

It's a tricky issue. There's lots of studies showing that people form pretty meaningful impressions quickly, as you're saying, and I think speed dating captures some of that. On the other hand, there's lots of evidence suggesting that the things they were measuring are important for things like long-term relationship survival, etc. There's also studies showing that these "thin slices", while accurate, are not as accurate as what you'd get from intimate long-term knowledge of someone. This isn't anything astonishing, but I have difficulty interpreting this as much more than "things like personality and attitudes are not very predictive of your superficial attractions to potential partners." I don't mean "superficial" dismissively, I just mean it in the sense of "not based on very much information." Another way of looking at it is: how could you predict attraction in that time frame based on longer-term, deeper-seated attributes, when that kind of timeframe doesn't allow for assessment of those sorts of things? It's one prediction, but I doubt if you stepped back and came at it without knowledge of this study, that you'd make that prediction. I certainly wouldn't (I'm trying to imagine me predicting my relationships from the first 4 minutes--sure, I'd be able to guess pretty well who I definitely wasn't attracted to, and maybe who I was definitely was attracted to, but beyond that? pbfbfbtttt...) I wasn't able to predict my most meaningful relationships from a month or so of being around them, sometimes on daily bases. Looking back at them, I might have had some kind of subconscious reaction I wasn't able to process, but I wasn't aware of what it meant at the time, which renders it useless.