As Roni Horn remarked in an interview with James Longwood, ‘the mutable version of identity is not an aberration… the fixed version is the aberration’. In this sense, Horn’s selfportraits are a testament to the impermanence of the self. a.k.a., an acronym for ‘also known as’, consists of thirty photographic portraits of the artist, presented in pairs—some of the pictures show her as a child or teenager, some as an adult. In this work Horn’s identity is multiplied, creating endless permutations of the self. The fact that these images span such a long period of time points to the connection between memory and identity and thus to a persistent doubt about the immutability of the self.