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Pennebaker, JW and Mehl, MR (2003) The sounds of social life: A psychometric analysis of students’ daily social environments and natural conversations. Journal of Personality and Social Psychology, 84 (4). pp. 857-870. ISSN 0022-3514
Pennebaker, JW, Niederhoffer, KG and Mehl, MR (2003) Psychological aspects of natural language use: Our words, our selves. Annual Review of Psychology, 54 . pp. 547-577. ISSN 0066-4308