On 2017 Mar 06, Stuart Buck commented:

This article has been critiqued by Shariff et al, "What is the association between religious affiliation and children's altruism?," Current Biology, available at http://www.cell.com/current-biology/fulltext/S0960-9822(16)30670-4. Among other things, they point to a clear and seemingly indisputable example of miscoding with regard to countries. For example, "United States" was coded as "1" while Canada was coded as "2," and so forth, as if "country-ness" was a variable in which Canada was twice as much of a country as the US. They also find other statistical errors that make this article look unreliable.

On 2017 Mar 06, Stuart Buck commented:

This article has been critiqued by Shariff et al, "What is the association between religious affiliation and children's altruism?," Current Biology, available at http://www.cell.com/current-biology/fulltext/S0960-9822(16)30670-4. Among other things, they point to a clear and seemingly indisputable example of miscoding with regard to countries. For example, "United States" was coded as "1" while Canada was coded as "2," and so forth, as if "country-ness" was a variable in which Canada was twice as much of a country as the US. They also find other statistical errors that make this article look unreliable.