Roger Ratcliff

Roger Ratcliff is a cognitive psychologist best known for developing models that explain how people make decisions and process information. His research focuses on understanding the mental steps involved when we choose between options, like recognizing a face or identifying a word. One of his key contributions is the "drift diffusion model," which depicts decision-making as a gradual accumulation of evidence until a threshold is reached, prompting a choice. This work helps scientists understand the timing and accuracy of human responses, with applications in psychology, neuroscience, and even understanding cognitive disorders.