Welcome to the new MATSA website.

The Massachusetts Association for the Treatment of Sexual Abusers, Inc. (MATSA) is a non-profit local chapter of the national parent organization.  It was formed in 1995 to carry out the mission of ATSA at the state level: to promote responsible assessment and treatment practices for adults with problematic sexual interests, behavior, or offending.  More about MATSA

MASOC/MATSA Conference Call for Presenters

We are thrilled to announce the MASOC/MATSA Call for Presenters for our annual pre-conference and conference scheduled for April 3, 4, and 5, 2019 in Marlborough, MA.  Read more …


The Multidimensional Inventory of Development, Sex, and Aggression (MIDSA) is a computerized self-report inventory that provides a clinical report to support therapeutic interventions with juveniles and adults who sexually offend. Among other information the report includes:

  • A history of living arrangements with caregivers and institutions.
  • Detailed family and child-rearing experiences, including sexual and physical
    abuse, neglect, caregiver relationships and vicarious violence.
  • Social, sexual, antisocial, and criminal history.
  • Scales assessing sexualization, aggressiveness, and related attitudes, beliefs, and feelings that have been found important in causing and sustaining sexually aggressive behavior.

The MIDSA is a complete software system that includes a program to present the assessment and a program to manage respondents and to request reports. The reports are requested, generated, and sent to the user via the internet, resulting in turn-around times measured in seconds. © 2007 Augur Enterprises, Inc. All Rights Reserved. Visit http://www.midsa.us to obtain more information.

Presented by Dr. Raymond Knight and Judith Sims-Knight

Date: March 16, 2018
Time: 8:30 a.m. – 4:30 p.m.
Location: Hampton Inn of Plainfield
2244 Perry Rd, Plainfield, IN 46168

Cost: $300 per person, includes CD/google drive of MIDSA information, access to web based MIDSA tool, CEU’s, and lunch

Register at: https://in-ajsop.org/training
Questions: Email info@in-ajsop.org


Treatment Providers:

The MATSA Resource Directory offers a simple way to identify treatment providers in your area with an easy to use map.

If you are a member of MATSA and would like your information posted on this Directory please contact Laurie Guidry at lregdry@aol.com or by phone at (413) 427-6903.

Website Address Change:

Please note that the website address which previously hosted the MATSA website, MATSA.org, is no longer affiliated with the MATSA organization. We apologize for any confusion from those who have visited the current MATSA.org website and it’s content which is anathema to the spirit and mission of the MATSA organization. Please update any links to point to the new MATSA.info address