▁shows ▁a ▁s ynt actic ▁and ▁lex ical ▁well - formed ness ▁compar able ▁to ▁speech ▁in ▁the ▁w aking ▁state , ▁and ▁which ▁in ▁addition ▁is , ▁far ▁more ▁often ▁than ▁not , ▁appropriate ▁to ▁the ▁dream ▁context , ▁has , ▁in ▁He yn ick ' s ▁theoretical ▁analysis , ▁prof ound ▁consequences ▁for ▁overall ▁dream ▁theories , ▁past ▁and ▁present . ▁ ▁Ps y cho anal yt ic ▁model ▁Fre ud ' s ▁ps y cho anal yt ic ▁model ▁of ▁the ▁mind ▁and , ▁in ▁particular , ▁his ▁theory ▁of ▁dream ▁generation ▁and ▁its ▁function ▁posit ▁the ▁existence ▁of ▁two ▁global ▁modes ▁of ▁mental ▁function ing . ▁The ▁primary ▁process , ▁character ized ▁by ▁such ▁mechan isms ▁as ▁cond ens ations , ▁disp lac ements , ▁and ▁revers als ▁( and ▁the ▁absence ▁of ▁any ▁sense ▁of ▁neg ation ) ▁is ▁theoret ically ▁characteristic ▁of ▁the ▁infant ile ▁mode ▁of ▁thinking . ▁It ▁is ▁su pers eded ▁in ▁the ▁course ▁of ▁ont ogen y ▁by ▁the ▁development ▁of ▁the ▁conscious ▁part ▁of ▁the ▁mind , ▁which ▁in ▁the ▁older ▁child ▁and ▁adult ▁is ▁govern ed ▁by ▁the ▁secondary ▁process , ▁ad her ing ▁to ▁the ▁rules ▁of ▁grammar ▁and ▁logic . ▁The ▁ver bal ▁language ▁which ▁the ▁developing ▁child ▁acqu ires ▁is ▁for ▁Fre ud ▁by ▁definition ▁a ▁secondary ▁process . ▁The ▁primary ▁process ▁in ▁ps y cho anal yt ic ▁theory ▁is ▁however ▁not ▁ban ished ▁from ▁the ▁mind , ▁but ▁is ▁contained ▁in ▁the ▁un cons cious ,