Actively speaking two languages protects against cognitive impairment
This might be me being overly cautious here, but I would be wary of the political implications of the study.<p>It's from an open University that's a project for lifelong learning funded as a public service in Catalonia - promoting the catalan language in the region is a key point of the project, so studies  finding out that bilingualism is something great to have raise red flags about the nationalist agenda behind it.<p>To be clear, I'm not trying to make a point against catalan people or taking a position in any political side whatsoever. I'm just pointing out the potential for local context affecting the scientific method here.