Asian countries are generally constituted of collectivist countries, so I would imagine that whatever Asian tourist groups you may be referring to may be aberrant if they weren't group-oriented. Not sure about what you're referring to when you say that, but even something such as bickering among each other may reflect a degree of interdependence, considering that they're able to bicker with each other as a family would. But again, I'm not sure what you're implying when you refer to the tourist groups, so...!
