Past literature has shown that extraversion is related to the use of positive emotion and social process words. However, the strength of the relationships varies substantially across studies. In this research, we conducted a meta-analysis (k = 37, N = 82,132) to estimate the overall effect size of the two linguistic correlates of extraversion. In addition, we tested potential moderators including demographic variables (e.g., age and gender) and communication contexts (e.g., synchronous vs. asynchronous, public vs. private). Our random effects models revealed a small correlation between extraversion and positive emotion words (r = .069, 95% CI = [.041, .096]), and a small correlation between extraversion and social process words (r = .077, 95% CI = [.044, .109]). In addition, the strength of the relationship between extraversion and positive emotion words varies across communication contexts, while the relationship between extraversion and social process words remains consistent across contexts. Our results suggest that positive emotion words and social process words are linguistic correlates of extraversion, but they are small in magnitude.

Psychologists have long theorized that people actively create, select, or modify experiences and situations to fulfill their individual psychological needs. However, little is known about how people may use forms of art and entertainment such as music to enhance their experiences and shape their environments for need satisfaction. In this research, we measured participants' personality and the linguistic styles of their favorite songs, and observed significant associations between personality traits and linguistic cues in lyrics. These associations were stronger for participants who generally liked a song because of its lyrics rather than melody. Our study is the first to show how one's personality is related to linguistic cues in someone else's writings. It points to the possibility that people may like certain songs because the linguistic cues in the lyrics are congruent with their personality and hence can satisfy personal needs. This expands research on person-situation interaction and literature on personality and language use, and has important practical implications. (C) 2018 Elsevier Inc. All rights reserved.