Definition one: Psycholinguistics is the discipline that investigates and describes the psychological processes that make it possible for humans to master and use language.
Definition two: Psycholinguistics is the discipline that investigates and describes the psychological processes controlled by language.
I generally use the word in the sense of definition two. FIML focuses on words and phrases and how we react to them and understand them. When we learn how to analyze real-time, real-world communication we learn to speak in a way that deeply resonates with our psychologies. Then everything improves. ABN
American Buddhist Net 