0 0 ). ▁O thers ▁have ▁suggested ▁that ▁evolution ary ▁psych ology , ▁human ▁behavior al ▁e col ogy , ▁and ▁cultural ▁evolution ▁all ▁fit ▁nicely ▁with ▁each ▁other , ▁ultimately ▁answering ▁different ▁questions ▁on ▁human ▁behavior al ▁divers ity ; ▁gene - c ulture ▁co e volution ▁may ▁be ▁at ▁odd s ▁with ▁other ▁research ▁programs ▁though ▁by ▁placing ▁more ▁emphas is ▁on ▁soci ally - lear ned ▁behavior ▁and ▁its ▁influence ▁on ▁human ▁evolution ▁( B rown ▁et ▁al ., ▁ 2 0 1 1 ). ▁ ▁E volution ary ▁psych ology ▁and ▁human ▁behavior al ▁e col ogy ▁Human ▁Be havior al ▁E col ogy ▁( H BE ) ▁studies ▁how ▁e col ogy ▁and ▁social ▁factors ▁shape ▁human ▁behavior al ▁vari ability . ▁A ▁key ▁assumption ▁of ▁human ▁behavior al ▁e col ogy ▁is ▁that ▁individuals ▁will ▁act ▁in ▁response ▁to ▁environmental ▁factors ▁in ▁ways ▁that ▁enh ance ▁their ▁fit ness . ▁While ▁both ▁H BE ▁and ▁evolution ary ▁psych ology ▁are ▁both ▁concerned ▁with ▁fit ness ▁benefits ▁and ▁natural ▁selection , ▁H BE ▁is ▁not ▁typically ▁concerned ▁with ▁mechan isms ▁or ▁how ▁humans ▁display ▁adapt ive ▁behav iors ▁in ▁novel ▁environments . ▁If ▁the ▁human ▁mind ▁took ▁its ▁present ▁form ▁and ▁evol ved ▁in ▁the ▁African ▁Ple ist oc ene , ▁why ▁should ▁one ▁expect ▁to ▁behave ▁adapt ively ▁in ▁the ▁present ▁and ▁in ▁so ▁many ▁new ▁environments ? ▁Human ▁Be havior al ▁E colog ists ▁may ▁respond ▁by ▁stating ▁that ▁humans ▁evol ved ▁as ▁e colog ical