“…Henz, 1996), educational background can be taken as an indicator of one's developmental conditions: For example, the jealousy modules of our participants without high-school degree were much more likely to develop in an environment with attenuated relationship stability (e.g. White, 1981;Bumpass, Martin, & Sweet, 1991) and increased female competition for good mates (Campbell, 1995(Campbell, , 2004, both of which imply a greater risk of paternal investment loss. If the jealousy module is conditionally adaptive, it should increase female emotional jealousy in such environments.…”