If it was a regular wallet full of useful cards, perhaps some sentimental things like photos etc. then I'd want to get it back to them regardless of whether it contained some cash. I think this experiment might work better with a backpack or a mobile phone.
A grocery list and a business card is hardly 'a wallet'.
Even with $13 ... that's still 'a wallet with some lose change'.
Without credit cards, id, or some some real money, i.e. 'meaningful to the person who lost it', it's an odd measure.
"There's a reason the authors stopped short of making any social commentary in their study." I think because it would be way out of bounds. Casual commenters such as us have a little space to speculate (unless dang gets fussy), but it'd be too improper for researchers to make assumptions.
One major thing missing in this study is the rural/urban divide. I suggest London is not representative in any way of the rest of the UK, and neither is Manchester the same as Penzance.
Edit: I should note that the authors do indeed go into trying to find cultural correlates, they go right for '% protestant' etc. and make some fairly speculative comments which I would be uncomfortable with because these are all just correlations. Notably, one of the highest 'correlations' is 'latitude' (!), it's not as though being at a certain latitude makes one more civic. Maybe there are other, related, factors, but it's certainly not latitude.
this makes it more difficult to get it back than in some of the top rated countries. Do hope to change. But this is not really about civic honesty.
I was raised in China and certainly got many of my lost things back growing up. Just because many Chinese folks prefer not to contact the owners directly does not mean they do not use other ways to return lost items :)
I believe people in China understand very well what paper money is and means, in roughly/ballpark the same terms as Americans.
I could be wrong.
The question is do they store this paper money is wallets? Or is it carried in a pocket? Or do they have full sized binders the money is put in? Or fanny packs? Do they even carry cash anymore?
A 'wallet' in China is the the same thing as a 'wallet' in the USA or Sweden.
Like how women in the US carry purses. I've never been to another country. Do all cultures use purses? If they do is it both genders or only one? I don't know.
Most interesting - the $13/$100 difference.
Notice that in the US and UK, the 'return rate' goes way up when there's $100 in the wallet, but when only $13 it's quite low.
In Switzerland and Sweden, it's high even for $13.
I think there might be a difference between 'core conscientiousness' and 'meaningful conscientiousness'.
In Sweden and Switzerland, it's a matter of propriety to 'return the wallet'. It's appropriate behaviour. They have smaller, tighter communities, you may even know the person. So they 'just do the right thing' because it doesn't matter what's in the wallet.
In the US/UK culture the thinking might be $13 - nobody is care, it's not worth the hassle to report. But as soon as there's money, then it becomes a material matter of conscientiousness, i.e. 'people will miss $100, it's worth the effort to report it'.
I think $13 is just not really enough money, not that much different from $0. It's almost change.
$100 is a nice, meaningful threshold.
Finally, China ... ouch.
Also, the results are perfectly correlated with transparency international index [1]
It's interesting because it may be that 'corruption' is not just a systematic issue in governance, but it may be correlated or predicted with even more basic levels of civic conscientiousness, as measured by tests such as this.
[1] https://www.transparency.org/cpi2018