In “Clever Hans (The Horse of Mr. Von Osten)," Oskar Pfungst meticulously unravels the phenomenon surrounding a horse named Hans, reputed for his extraordinary ability to solve mathematical problems and answer questions posed by humans. The book aligns with the emerging fields of psychology and animal behavior during the early 20th century, employing a rigorous, systematic methodology that marks a pioneering approach in experimental psychology. Pfungst'Äôs literary style reflects a combination of empirical observation and critical analysis, capturing a profound inquiry into the nature of animal intelligence and the intricacies of human perception and suggestion. Oskar Pfungst, a German psychologist, was instrumental in the development of psychology as a science, with his work greatly influenced by the intellectual currents of his time, particularly in behaviorism and the study of perception. His personal curiosity about Hans's seemingly miraculous abilities led him to dismantle the story, revealing how the horse reacted to subtle, unconscious cues from human attendees. Pfungst's background in experimental psychology placed him in a unique position to challenge widely accepted beliefs and provoke critical discussions regarding anthropomorphism. “Clever Hans” is highly recommended for readers interested in psychology and animal cognition, as it not only provides an engaging narrative of a remarkable case study but also serves as a foundational text that invites critical reflection on the implications of understanding animal behavior through a human lens. Readers will find Pfungst's incisive observations both enlightening and thought-provoking.