This appears to be a study of common patterns of argument in two samples of self-reportedly happy couples. The kind of happy couples that volunteer for these so

This appears to be a study of common patterns of argument in two samples of self-reportedly happy couples. The kind of happy couples that volunteer for these sorts of studies, presumably. It’s all very nice but I’m not sure it tells us much, not least because every unhappy couple I know behaves in these ways too.