Study of a host of psychological factors associated with speech, including voice, attitudes, emotions, and grammatical rules, that affect communication and understanding of language. [psycho- + L. lingua, tongue]
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psy·cho·lin·guis·tics .sī-kō-liŋ-'gwis-tiks n pl but sing in constr the study of the mental faculties involved in the perception, production, and acquisition of language
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n.
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psy·cho·lin·guis·tics (si″ko-ling-gwisґtiks) the study of psychological aspects of language acquisition, processing, and production, on the part of both the producer and the receiver.Medical dictionary. 2011.