How does a psychological novel differ from an action-driven novel?

The primary distinction between a psychological novel and an action-driven novel lies in the narrative's focus and the structural role of the plot.

In a psychological novel, the internal states—including the thoughts, feelings, and motivations of the characters—are of equal or greater importance than external events. While earlier fiction was often characterized by a proliferation of action and incidental characters, the psychological novel typically limits its scope to a few characters to allow for a deep, analytical examination of their minds. In these works, the plot is subordinate to and dependent upon the delineation of character; events may be presented not in chronological order, but as they arise through memories, fantasies, or associations.12

Conversely, novels driven by action prioritize the sequence of events and external occurrences. In such narratives, the plot serves as the primary engine, often organizing events through a clear sense of causality. While the psychological approach is sometimes perceived as lacking in excitement, the psychological novel achieves its depth by exploring the "soul" of the protagonist, where the most crucial events occur internally rather than through external physical action.32