Addams worked with other reform groups toward goals including the first juvenile court law, tenement-house regulation, an eight-hour working day for women, factory inspection, and workers' compensation. She advocated research aimed at determining the causes of poverty and crime, and she supported women's suffrage. She was a strong advocate of justice for immigrants, African Americans, and minority groups by becoming a chartered member of the NAACP. Among the projects that the members of the Hull House opened were the Immigrants' Protective League, the Juvenile Protective Association, the first juvenile court in the United States, and a Juvenile Psychopathic Clinic.