ɪn nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi nˈaɪn, ɪɾ ɛkspˈændᵻd bᵻjˌɔnd ðɪ ˈænjuːəl kˈɑːnfɹəns ɹᵻpˈoːɹt ænd bɪkˌeɪm nˈoʊn æz ɐmˈɛɹɪkən dʒˈɜːnəl ʌv mˈɛntəl dᵻfˈɪʃənsi.
In 1939, it expanded beyond the annual conference report and became known as American Journal of Mental Deficiency.