He argues that to many, impoverished and politically unstable countries are strongly overlapping categories. Although this might often be the case, the authors were able to disentangle the effects of impoverishment and political instability. Moreover, these two categories appear to bring about different effects in the migrant’s children school achievements.

Therefore, I do not agree that this is self-contradictory. However, Jon also mentioned that the title of the post did not do justice to the content of the post. I agree, and I changed the title to the title of the original research paper. The original title only highlights one part of the research, which apparently gave way to some misunderstanding, which the new title hopefully will not. I thank Jon Claerbout for pointing that out.

Although I appreciate you commenting my blog, I would have appreciated some more detail on what exactly is self-contradictory.