▁phys i ologist ▁who ▁worked ▁in ▁Germany . ▁ ▁Biography ▁Pre yer ▁was ▁born ▁in ▁R ush ol me ▁at ▁Manchester . ▁He ▁studied ▁phys i ology ▁and ▁chem istry ▁at ▁Heidel berg , ▁where ▁he ▁received ▁his ▁doctor ate ▁in ▁ 1 8 6 2 . ▁In ▁ 1 8 6 6 ▁he ▁earned ▁his ▁medical ▁degree ▁at ▁the ▁University ▁of ▁Bonn , ▁and ▁in ▁ 1 8 6 9 ▁succeeded ▁Johann ▁Nep om uk ▁Cz erm ak ▁( 1 8 2 8 - 1 8 7 3 ) ▁as ▁professor ▁of ▁phys i ology ▁at ▁the ▁University ▁of ▁J ena . ▁At ▁J ena ▁he ▁was ▁also ▁director ▁of ▁the ▁Phys i ology ▁Institute . ▁His ▁students ▁included ▁Argent ian ▁Roberto ▁W ern ic ke . ▁ ▁Pre yer ▁was ▁a ▁founder ▁of ▁scientific ▁child ▁psych ology , ▁and ▁a ▁pione er ▁in ▁regards ▁to ▁research ▁of ▁human ▁development ▁based ▁on ▁empir ical ▁observation ▁and ▁experiment ation . ▁He ▁was ▁inspired ▁by ▁Charles ▁Dar win ' s ▁theory ▁of ▁evolution ▁and ▁Gustav ▁Fe ch ner ’ s ▁work ▁in ▁psych oph ys ics . ▁ ▁He ▁author ed ▁Die ▁See le ▁des ▁Kind es ▁( The ▁soul ▁of ▁the ▁child ) ▁in ▁ 1 8 8 2 . ▁This ▁was ▁a ▁land mark ▁book ▁on ▁development al ▁psych ology ▁written ▁as ▁a ▁rig orous ▁case ▁study ▁of ▁his ▁own ▁daughter ’ s ▁development , ▁including ▁observ ational ▁records . ▁It ▁was ▁translated ▁to ▁English ▁in ▁ 1 8 8 8 .