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"We offer flexible solutions for your juvenile justice needs"

The National Youth Screening & Assessment Partners (NYSAP) is a technical assistance and research group, dedicated to helping juvenile justice programs identify youths’ needs for behavioral health intervention and risk management.

NYSAP has been working with juvenile justice programs nationwide since 2000, when we began providing technical assistance for use of NYSAP’s mental health screening tool, the Massachusetts Youth Screening Instrument-Second Version (MAYSI-2).

*** Just Released ***


The Massachusetts Arrest Screening Tool for Law Enforcement (MASTLE) is an objective screening tool validated in Massachusetts jurisdictions that assesses the likelihood a youth taken into police custody for a criminal offense will be arrested again or will fail to appear for arraignment. This information will allow police supervisors and commanders to make appropriate pre-processing decisions based on the presence of youths’ risk factors; such as, whether to hold youth in pre-arraignment detention at the police station or to divert youth away from formal arrest. For more information on this screening tool, please download our MASTLE Brief and MASTLE Executive Summary. If you would like to receive a free copy of this screening tool along with the user's manual, please complete our online request form (note: this form only works with Firefox and Chrome web browsers). If you are using Internet Explorer, please download this request form and email it to

Click here if you wish to request training on the MASTLE or technical assistance for implementing this screening tool. Costs will vary based on needs.

NYSAP has six objectives:

  • Nationwide and global support for users of the MAYSI-2 for mental health, substance use, and trauma screening in juvenile justice programs;
  • Assisting juvenile justice programs to select and successfully implement risk / needs and mental health screening and assessment tools;
  • Development of risk/needs assessment strategies, offering ways to meet youths’ needs related to their delinquencies, reduce recidivism and increase public safety;
  • Strategies and data analysis for quality assurance related to use of screening and assessment tools;
  • Helping states reform their laws, practices and forensic evaluations regarding juveniles’ competence to stand trial; and
  • Translational research that studies delinquent youths’ mental health and risk for re-offending, then promotes and evaluates the most effective use of tools in everyday juvenile justice practice to assess and change them.   

Contact us to inquire about assistance from NYSAP on MAYSI-2, MAYSIWARE, and other youth mental health, risk and needs screening and assessment questions in juvenile justice programs.

Juvenile Justice Publications

***Newly Published***

Adolescent Domestic Battery Typology Tool Manual & Executive Summary (2015)
by Wendy Nussbaum, LCPC, Stuart M. Berry, MSW, LISW, Shannon Hartnett, M.A., and Gina Vincent, Ph.D.

ScreeningAssessmentSuicidePrev Identifying Dual Status Youth
with Trauma-Related Problems (2015)
by Amy Wevodau, Ph.D., Keith Cruise, Ph.D., M.L.S., & Thomas Grisso, Ph.D.
Trauma in Dual Status Youth: Putting Things in Perspective (2015)
by Thomas Grisso, Ph.D., and Gina M. Vincent, Ph.D.


RA in JJ Screening and Assessment for Suicide Prevention: Tools and Procedures for Risk Identification among Juvenile Justice Youth (2013)
by the Youth in Contact with the Juvenile Justice System Task Force of the National Action Alliance for Suicide Prevention
How to Get the Most Out of Risk Assessment in Juvenile Justice (2013)
by Gina M. Vincent, Ph.D., and Laura S. Guy, Ph.D.


Developing Statutes
Risk Assessment in Juvenile Justice: A Guidebook for Implementation (2012)
by Gina M. Vincent, Ph.D., Laura S. Guy, Ph.D., and Thomas Grisso, Ph.D.

News Updates:

U.S. Supreme Court holds Miller retroactive, providing review opportunities for youth

StateScan: Mental Health Screening in Juvenile Justice Services

Tom Grisso

Tom Grisso


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