Soc Sci Med. 2025 Jun 27;382:118325. doi: 10.1016/j.socscimed.2025.118325. Online ahead of print. ABSTRACT BACKGROUND: Systematically high and upward mobile (lower childhood and higher adulthood) socioeconomic status (SES) has been suggested to be associated with better overall cognitive function in adulthood compared to systematically low or downward mobile (high childhood and…