3、leuptothisage.Afterthispoint,IQscoresbecomesteady(稳定的).ButJamesFlynn,professorofpoliticalstudiesandpsychologyatthe University of Otago in NewZealand,arguesthatpeoplecan“upgrade”theirownintelligencethroughouttheirlives.Hebelievesintellectualstimulation(刺激)fromothersisimportantasthe“brainseemstobe