▁or ▁false ▁information ▁is ▁better ▁remembered ▁with ▁each ▁subsequent ▁generation . ▁This ▁can ▁be ▁seen ▁with ▁the ▁mis information ▁effect , ▁where ▁an ▁eye - w it ness ▁account ▁of ▁an ▁event ▁can ▁be ▁influenced ▁by ▁a ▁by stand er ▁account ▁of ▁the ▁same ▁event , ▁or ▁by ▁suggestion ▁via ▁an ▁authority ▁figure . ▁It ▁is ▁also ▁believed ▁to ▁influence ▁the ▁recovery ▁of ▁repr essed ▁shock ing ▁or ▁ab us ive ▁mem ories ▁in ▁patients ▁under ▁hyp nos is , ▁where ▁the ▁recovered ▁memory , ▁although ▁possibly ▁a ▁v ivid ▁account , ▁could ▁be ▁entirely ▁false , ▁or ▁have ▁specific ▁details ▁influenced ▁as ▁the ▁result ▁of ▁persistent ▁suggestion ▁by ▁the ▁ther ap ist . ▁ ▁F ocal ▁retro grade ▁am nes ia ▁Ret ro grade ▁am nes ia ▁is ▁typically ▁the ▁result ▁of ▁physical ▁or ▁psych ological ▁tra uma ▁which ▁manifest s ▁itself ▁as ▁the ▁in ability ▁to ▁remember ▁information ▁preceding ▁the ▁tra um atic ▁event . ▁ ▁It ▁is ▁usually ▁accompanied ▁by ▁some ▁type ▁of ▁an ter og rade ▁am nes ia , ▁or ▁in ability ▁to ▁ac quire ▁new ▁knowledge . ▁F ocal ▁retro grade ▁am nes ia ▁( F RA ), ▁sometimes ▁known ▁as ▁functional ▁am nes ia , ▁refers ▁to ▁the ▁presence ▁of ▁retro grade ▁am nes ia ▁while ▁knowledge ▁ac quisition ▁remains ▁int act ▁( no ▁an ter og rade ▁am nes ia ). ▁Memory ▁for ▁how ▁to ▁use ▁objects ▁and ▁perform ▁skills ▁( imp licit ▁memory ) ▁may ▁remain ▁int act ▁while ▁specific ▁knowledge ▁of ▁personal ▁events