hɪz pɹˈɪnsɪpəl ˌɛkspɚtˈiːz ɪz ɪnðə fɪlˈɑːsəfi ʌv mˈaɪnd, fɪlˈɑːsəfi ʌv lˈæŋɡwɪdʒ, ænd fˌɪləsˈɑːfɪkəl ˌænθɹəpˈɑːlədʒi.
His principal expertise is in the philosophy of mind, philosophy of language, and philosophical anthropology.