The New York Longitudinal study was developed from 1965 to 1988, and it aimed to create a model of child development based on several personality and temperamental traits. Researchers measured nine different qualitative and quantitative variables, by conducting interviews with the parents and with the children, once they got older.
The study used nine different variables, but the model included only three categories based on the results: the "easy children", the "difficult children" and the "slow to warm up".
The youth in crisis law permits the Juvenile Court to assume jurisdiction over 16- and 17-year olds who are beyond their parents' control, run away from home, or are truant.
