ˈɔːl ʌv hɪz sˈʌbsᵻkwənt wˈɜːk wʌz dɪvˈoʊɾᵻd tə ðɪ ɛkstˈɛnʃən ænd ᵻlˌæbɚɹˈeɪʃən ʌvðə fˌʌndəmˈɛntəl pəzˈɪʃən sˈɛt fˈɔːɹθ ɪn ðɪs bˈʊk, nˈeɪmli, ðæt saɪkˈɑːlədʒi ʃˌʊd ɡˈɪv æz mˈʌtʃ ɐtˈɛnʃən tə ðə pɹˈɑːpɚɾiz ʌvðɪ ˈɔːɹɡənˌɪzəmz ɛnvˈaɪɹənmənt æz ɪt dˈʌz tə ðɪ ˈɔːɹɡənˌɪzəm ɪtsˈɛlf.
All of his subsequent work was devoted to the extension and elaboration of the fundamental position set forth in this book, namely, that psychology should give as much attention to the properties of the organism's environment as it does to the organism itself.