What is your opinion on this paper? I'm really quite surprised because although the sample size is commendable, it really doesn't reflect my own experience or r

What is your opinion on this paper? I'm really quite surprised because although the sample size is commendable, it really doesn't reflect my own experience or reality amongst my social circle. https://paa2013.princeton.edu/papers/132585 https://paa2013.princeton.edu/papers/132585