▁life ▁span , ▁including ▁effects ▁on ▁the ▁individual ' s ▁behavior ▁from ▁family , ▁social , ▁cultural , ▁bi ological , ▁and ▁gen etic ▁influ ences , ▁as ▁well ▁as ▁influ ences ▁from ▁the ▁domains ▁of ▁motiv ation ▁and ▁ability . ▁ ▁As ▁Hans ▁E ys en ck ▁at ▁the ▁Institute ▁of ▁Psych iat ry , ▁London ▁remarked :" C att ell ▁has ▁been ▁one ▁of ▁the ▁most ▁pro l ific ▁writers ▁in ▁psych ology ▁since ▁Wilhelm ▁W und t .... Acc ording ▁to ▁the ▁C itation ▁Index , ▁he ▁is ▁one ▁of ▁the ▁ten ▁most ▁c ited ▁psych olog ists , ▁and ▁this ▁is ▁true ▁with ▁regard ▁to ▁not ▁only ▁cit ations ▁in ▁social ▁science ▁journ als ▁but ▁also ▁those ▁in ▁science ▁journ als ▁generally . ▁Of ▁the ▁two ▁hundred ▁and ▁fifty ▁most ▁c ited ▁scient ists , ▁only ▁three ▁psych olog ists ▁made ▁the ▁grade , ▁namely , ▁Sig mund ▁Fre ud ▁in ▁the ▁first ▁place , ▁then ▁the ▁rev iewer ▁[ H . J . ▁E ys en ck ], ▁and ▁then ▁C att ell . ▁Thus ▁there ▁is ▁no ▁question ▁that ▁C att ell ▁has ▁made ▁a ▁trem end ous ▁impression ▁on ▁psych ology ▁and ▁science ▁in ▁general ." ▁ ▁View s ▁on ▁race ▁and ▁e ugen ics ▁William ▁H . ▁T ucker ▁and ▁Barry ▁Me h ler ▁have ▁critic ized ▁C att ell ▁based ▁on ▁his ▁writ ings ▁about ▁evolution ▁and ▁political ▁systems . ▁They ▁argue ▁that ▁throughout ▁his ▁life ▁C att ell ▁ad her ed ▁to ▁a