ism . ▁He ▁claims ▁that ▁behavior ▁analysis ▁is ▁actually ▁still ▁an ▁active ▁area ▁of ▁research ▁that ▁produces ▁successful ▁results ▁in ▁psych ology ▁and ▁points ▁to ▁the ▁Association ▁for ▁Be havior ▁Analysis ▁International ▁as ▁evidence . ▁He ▁claims ▁that ▁behavior ist ▁research ▁is ▁responsible ▁for ▁successful ▁treat ments ▁of ▁aut ism , ▁st utter ing , ▁and ▁a phas ia , ▁and ▁that ▁most ▁psych olog ists ▁actually ▁study ▁observable ▁behavior , ▁even ▁if ▁they ▁interpret ▁their ▁results ▁cogn it ively . ▁He ▁bel ieves ▁that ▁the ▁change ▁from ▁behavior ism ▁to ▁cogn it iv ism ▁was ▁grad ual , ▁slowly ▁evol ving ▁by ▁building ▁on ▁behavior ism . ▁ ▁L ach man ▁and ▁But ter field ▁were ▁among ▁the ▁first ▁to ▁imply ▁that ▁cogn itive ▁psych ology ▁has ▁a ▁revolution ary ▁origin . ▁Thomas ▁H . ▁Le a he y ▁has ▁critic ized ▁the ▁idea ▁that ▁the ▁introduction ▁of ▁behavior ism ▁and ▁the ▁cogn itive ▁revolution ▁were ▁actually ▁revolution s ▁and ▁proposed ▁an ▁alternative ▁history ▁of ▁American ▁psych ology ▁as ▁" a ▁narr ative ▁of ▁research ▁trad itions ." ▁ ▁Jer ome ▁Brun er ▁critic ized ▁the ▁view ▁that ▁there ▁was ▁a ▁conflict ▁between ▁behavior ism ▁and ▁the ▁study ▁of ▁mental ▁events , ▁and ▁he ▁character ized ▁one ▁of ▁the ▁primary ▁objects ▁of ▁the ▁cogn itive ▁revolution ▁as ▁changing ▁the ▁study ▁of ▁psych ology ▁so ▁that ▁meaning ▁was ▁its ▁core . ▁His ▁understanding ▁of ▁the ▁cogn itive ▁revolution ▁revol ves ▁entirely ▁around ▁" mean ing - making " ▁and ▁the ▁formal ▁description ▁of