In the mid-1920s he undertook further studies at the University of Leipzig in ethnology and psychology, where he first developed his abiding interest in the indigenous cultures of the Americas.
ɪnðə mˈɪd nˈaɪntiːnhˈʌndɹɪd twˈɛnti z hiː ˌʌndɚtˈʊk fˈɜːðɚ stˈʌdiz æt ðə jˌuːnɪvˈɜːsᵻɾi ʌv lˈaɪpsɪɡ ɪn ɛθnˈɑːlədʒi ænd saɪkˈɑːlədʒi, wˌɛɹ hiː fˈɜːst dɪvˈɛləpt hɪz ɐbˈaɪdɪŋ ˈɪntɹɛst ɪnðɪ ɪndˈɪdʒənəs kˈʌltʃɚz ʌvðɪ ɐmˈɛɹɪkəz.