The Children's Apperception Test (CAT) is a projective personality test designed for children aged 3 to 10, using ambiguous stimuli such as pictures of animals (CAT-A) or humans (CAT-H) to reveal hidden emotions and internal conflicts. Developed by Leopold Bellak and Sonya Sorel Bellak in 1949, the test is administered by trained professionals and assesses personality, psychological health, and maturity through storytelling prompts based on the images. While the CAT can be useful in various contexts, it faces criticism due to its subjective interpretation and lack of standardized administration protocols.