1. Barrett, M.D. (1979): “Semantic Development During the Single-Word Stage of Language Acquisition”; Doctoral thesis, University of Sussex.
2. Barrett, M.D. (1980): “Early Pragmatic Development”, British Psychological Society Developmental Section Annual Conference, Edinburgh, September.
3. Barrett, M.D. (1981): The communicative functions of early child language. Linguistics, 19, 273–305.
4. Barrett, M.D. (1982a): “Distinguishing Between Prototypes: The Early Acquisition of the Meanings of Object Names”, in Language Development: Syntax and Semantics, ed. by S.A. Kuczaj (Erlbaum, Hillsdale, NJ.).
5. Barrett, M.D. (1982b): The holophrastic hypothesis: conceptual and empirical issues. Cognition, 11, 47–76.