  Both offline and online human behaviors are affected by personality. Of
special interests are online games, where players have to impersonate specific
roles and their behaviors are extensively tracked by the game. In this paper,
we propose to study the relationship between players' personality and game
behavior in League of Legends (LoL), one of the most popular Multiplayer Online
Battle Arena (MOBA) games. We use linear mixed effects (LME) models to describe
relationships between players' personality traits (measured by the Five Factor
Model) and two major aspects of the game: the impersonated roles and in-game
actions. On the one hand, we study relationships within the game environment by
modeling role attributes from match behaviors and vice versa. On the other
hand, we analyze the relationship between a player's five personality traits
and their game behavior by showing significant correlations between each
personality trait and the set of corresponding behaviors. Our findings suggest
that personality and behavior are highly entangled and provide a new
perspective to understand how personality can affect behavior in role-based
online games.
