Although I've only slimmed the paper, this isn't a "Catholic study", but a peer-reviewed paper. Whether the results are subject to debate depends on the choice of papers used for meta-analysis. However, it is known there are a huge number of backgrounds which lead to detrimental effects on children during development, and whether we like it or not, same-sex parents is one of these. Quite why isn't fully understood, but could be due to parental alienation problems, such as the absence of a 'full-time' mother or father (which is a common problem with single parent families), adoption, confusion when children become aware of reproduction, etc.
Simply because something is published in a source you do not like, don't dismiss it out of hand as cherry-picking or confirmation bias.
Simply because something is published in a source you do not like, don't dismiss it out of hand as cherry-picking or confirmation bias.
