▁sequence . ▁The ▁ 1 9 6 3 ▁study ▁used ▁data ▁concerning ▁the ▁" real ▁life ▁ag gression ▁and ▁control ▁group ▁conditions " ▁from ▁the ▁ 1 9 6 1 ▁study ; ▁hence , ▁it ▁is ▁possible ▁that ▁the ▁m aturing ▁of ▁subjects ▁and ▁influ ences ▁external ▁to ▁the ▁studies , ▁occurr ing ▁during ▁the ▁period ▁between ▁the ▁studies , ▁could ▁have ▁contributed ▁to ▁the ▁ 1 9 6 3 ▁observations , ▁results , ▁and ▁conclus ions . ▁ ▁Cla ims ▁regarding ▁motiv ation ▁Some ▁sch ol ars ▁suggest ▁the ▁Bob o ▁D oll ▁studies ▁are ▁not ▁studies ▁of ▁ag gression ▁at ▁all , ▁but ▁rather ▁that ▁the ▁children ▁were ▁motiv ated ▁to ▁im itate ▁the ▁adult ▁in ▁the ▁belief ▁the ▁videos ▁were ▁instructions . ▁ ▁In ▁other ▁words , ▁the ▁children ▁may ▁have ▁been ▁motiv ated ▁by ▁the ▁desire ▁to ▁please ▁adult s ▁or ▁become ▁adult s ▁rather ▁than ▁by ▁genu ine ▁ag gression . ▁Furthermore , ▁the ▁same ▁authors ▁critic ize ▁the ▁external ▁valid ity ▁of ▁the ▁study , ▁not ing ▁that ▁b ob o ▁doll s ▁are ▁designed ▁to ▁be ▁hit . ▁ ▁Eth ical ▁claims ▁Ch alleng es ▁have ▁been ▁made ▁regarding ▁the ▁eth ics ▁of ▁the ▁original ▁studies . ▁In ▁a ▁university - level ▁intro duct ory ▁general ▁psych ology ▁text , ▁Band ura ' s ▁study ▁is ▁term ed ▁un eth ical ▁and ▁mor ally ▁wrong , ▁as ▁the ▁subjects ▁were ▁manip ulated ▁to ▁respond ▁in ▁an ▁ag gress ive ▁manner . ▁They ▁also ▁state ▁no ▁surprise