Dialogical self
Inspired by the original ideas of William James and Mikhail Bakhtin, Hubert Hermans, Harry Kempen and Rens van Loon wrote the first psychological publication on the "dialogical self" in which they conceptualized the self in terms of a dynamic multiplicity of relatively autonomous "I"-positions in the (extended) landscape of the mind. In this conception, the "I" has the possibility to move from one spatial position to another in accordance with changes in situation and time. The "I" fluctuates among different and even opposed positions, and has the capacity to imaginatively endow each position with a voice so that dialogical relations between positions can be established. The voices function like interacting characters in a story, involved in processes of question and answer, agreement and disagreement. Each of them have a story to tell about their own experiences from their own stance. As different voices, these characters exchange information about their respective Me's and mines, resulting in a complex, narratively structured self.
Discursive psychology
As a counter to mainstream psychology's treatment of discourse as a "mirror" for people's expressions of thoughts, intentions, motives, etc., DP's founders made the case for picturing it instead as a "construction yard" wherein all such presumptively prior and independent notions of thought and so on were built from linguistic materials, topicalised and, in various less direct ways, handled and managed. Here, the study of the psychological implies commitment not to the inner life of the mind, but rather, to the written and spoken practices within which people invoked, implicitly or explicitly, notions precisely like "the inner life of the mind". Discursive psychology therefore starts with psychological phenomena as things that are constructed, attended to, and understood in interaction. An evaluation, say, may be constructed using particular phrases and idioms, responded to by the recipient (as a compliment perhaps) and treated as the expression of a strong position. In discursive psychology, the focus is not on psychological matters somehow leaking out into interaction; rather, interaction is the primary site where psychological issues are live. It is philosophically opposed to more traditional cognitivist approaches to language. It uses studies of naturally occurring conversation to critique the way that topics have been conceptualised and treated in psychology.