How is the development of characters formed in the novel flowers for algernon?

In "Flowers for Algernon," the development of characters like Charlie Gordon is driven by his intellectual enhancement through the experiment. As Charlie's intelligence grows, his personality changes, showing a complex journey of self-discovery, emotional growth, and evolving relationships with other characters. The contrasting behaviors of characters like Charlie, Alice, and Dr. Strauss further highlight the impact of intellect on human relationships and understanding.