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Even the stars think that I am superior: Personality, intelligence and belief in astrology. April 2022. This is one of the most unique studies that I've seen recently! Takeaway: Belief in astrology was strongly correlated with narcissism, while those with higher intelligence had the lowest beliefs in astrology. 

Residential and school green and blue spaces and intelligence in children: The Generation XXI birth cohort. 2022.  Study from Portugal that found that children with urban green spaces around their residences had higher performance and higher global IQ. Note similar studies in Rome and elsewhere have found similar results and have shown some mediating role of nitrogen dioxide. 

Intelligence quotient decline following frequent or dependent cannabis use in youth: a systematic review and meta-analysis of longitudinal studies. 2021. This meta review found that there was an average decline of 2 IQ points after exposure to cannabis in youth!

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