The social defeat test allows for study of recurrent defeat and is often used in the assessment of psychiatric compounds. The repetitive exposure encourages anhedonia, social avoidance behaviors, and anxiety and although relatively new (developed in 2006), is seen as a  simple yet powerful model of social interaction. The MazeEngineers social defeat apparatus comes with two social defeat cages, an arena, and a clear divider for use in the home cage. Additional cages or modifications can be made upon request.