Figure 8. This infant’s life will be strongly affected by its early experiences: females that experience more adversity early in life have much shorter lifespans. Among females that survive to adulthood, those who experience three or more sources of early adversity die a median of 10 years earlier than ‘silver spoon’ females who experience little or no adversity. The sources of adversity that were studied include losing one’s mother in the first four years of life, having a close-in-age younger sibling, being born in a drought, born to a low-ranking mother, and born to a socially isolated mother. Note: the adult male in the foreground is wearing a radio collar, which the research team uses to help locate study groups and follow males when they move between social groups. Photo credit: Elizabeth A. Archie.