Final answer:
The Trait leadership model suggests that leadership style is closely tied to personality traits and is difficult to change, emphasizing the inherent qualities that make an effective leader.
Step-by-step explanation:
The leadership model that suggests leadership style is strongly anchored in personality and, therefore, hard to change is the Trait leadership model. This model posits that certain personality characteristics contribute to the effectiveness of leaders and these traits are relatively stable and difficult to alter. The Trait model contrasts with other models like situational or contingency, which suggest that the most effective leadership style is dependent on the situation or context, and the transactional model, which focuses on a system of rewards and punishments.