In it, an "online questionnaire was sent to
1,000 adult campers over the age of 18 via The Camping and Caravanning Club's member database and 1,000 adult non-campers over the age of 18."
Thus, it's hard to distinguish between "campers" and "club members." Perhaps it's club membership which drives happiness? Or perhaps it's that happier people are more likely to join a club.
There's no mention of a demographic comparison between the two sample groups. If the club members tend to be richer than the non-club members, then perhaps that's the reason for the difference. Other demographics differ as well. For example, "Holidays under canvas just don't seem to appeal to Brits from ethnic minorities" https://www.theguardian.com/travel/2010/jul/09/black-people-... .
In it, an "online questionnaire was sent to 1,000 adult campers over the age of 18 via The Camping and Caravanning Club's member database and 1,000 adult non-campers over the age of 18."
Thus, it's hard to distinguish between "campers" and "club members." Perhaps it's club membership which drives happiness? Or perhaps it's that happier people are more likely to join a club.
There's no mention of a demographic comparison between the two sample groups. If the club members tend to be richer than the non-club members, then perhaps that's the reason for the difference. Other demographics differ as well. For example, "Holidays under canvas just don't seem to appeal to Brits from ethnic minorities" https://www.theguardian.com/travel/2010/jul/09/black-people-... .