I noticed the same high correlation of "new-agey" practices among the participants. However, it's worth considering the sort of people who would be open to participating in such a study in the first place.

The ideal study, I believe, would consistent of a statistical cross-section of a particular culture/society. It's highly unlikely that the more socially conservative elements in said culture would participate in such a study. This may, in part, explain the somewhat shared nature of the remarks by the participants.