General intelligence is often viewed as a composite of subdomains, one of which is verbal ability. Studies suggest that verbal ability impacts the development of personality, and as development in...Show moreGeneral intelligence is often viewed as a composite of subdomains, one of which is verbal ability. Studies suggest that verbal ability impacts the development of personality, and as development in verbal ability plateaus in adolescence, this age group is particularly interesting for studying the relationship between verbal ability and personality. This exploratory study investigates the relationship between personality traits and Vocabulary Intelligence Quotient (VIQ) among adolescents between 13–18 years old (n = 1710). Employing Exploratory Structural Equation Modeling and Multiple Linear Regression on data from the Open-source Psychometrics Project, (https://openpsychometrics.org/_rawdata/, data last updated 13/3/2018), the study identified personality factors and examined their predictive power on VIQ. Results for all included respondents (ages 13 to 18), early adolescents (ages 13 to 16) and late adolescents (ages 17 to 18) showed that models with 7 to 8 factors were the most adequate for encapsulating adolescents’ personalities. As expected, Regression analysis showed that age positively correlated with VIQ, along with Quirkiness, Curiosity, Ambitiousness, Openness, Belief, and Adaptability. Notable differences were found in the significance of various personality traits as predictors of VIQ between the early adolescents (n = 804), late adolescents (n = 906), and the total sample, supporting the hypothesis of personality maturation and the emergence of new personality traits in adolescents as they develop. These findings highlight age-related variations in the relationship between personality expression and VIQ, and underscore the importance of considering diverse personality traits in predicting verbal ability. This study contributes to understanding adolescent personality development and its implications for vocabulary intelligence.Show less