this paper, we test the hypothesis that possessive pronouns have the same basic structure containing the genitive pronoun, plus, in some languages, some extra structure, as suggested by Caha (2009). In order to unravel the structure of these pronouns, we use the same logic applied by Caha (2009) and Bobaljik (2012) that excludes so-called ABA-patterns. If possessive pronouns are built on top of the genitive, we derive several predictions. First, we predict that there are languages in which the possessive pronoun comprises the genitive pronoun plus an extra affix (complex morphology). Furthermore, we predict that there are no possessive pronouns that have the same form as the accusative, or the nominative pronoun, to the exclusion of the ge...