; or (ii) evaluation by a quasi-experimental trial, in which the outcomes for participants are compared with outcomes for a control group that is made up of individuals who are similar to such participants. (5) Intervention The term intervention means the provision of programs and services that are supported by research, are evidence-based or promising practices, and are provided to youth who are involved in, or who are identified by evidence-based risk assessment methods as being at high risk of continued involvement in, juvenile delinquency or criminal street gangs, as a result of indications that demonstrate involvement with problems such as truancy, substance abuse, mental health treatment needs, or siblings who have had involvement with juvenile or criminal justice systems. (6) Juvenile delinquency and criminal street gang activity prevention The term juvenile delinquency and criminal street gang activity prevention means the provision of programs and resources to children and families who have not yet had substantial contact with criminal justice or juvenile justice systems, that— (A) are designed to reduce potential juvenile delinquency and criminal street gang activity risks; and (B) are evidence-based or promising educational, health, mental health, school-based, community-based, faith-based, parenting, job training, social opportunities and experiences, or other programs, for youth and their families, that have been demonstrated to be effective in reducing juvenile delinquency and criminal street gang activity risks. (7) Promising The term promising , when used with respect to a practice relating to juvenile delinquency and criminal street gang activity prevention and intervention, means a practice (including a service, program, activity, intervention, technology, or strategy) that, based on statistical analyses or a theory of change, the Administrator has determined— (A) has outcomes from an evaluation that demonstrate such practice reduces juvenile delinquency and criminal street gang activity