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Diane A. Tennies, Ph.D., LADC has a state-wide private practice as a psychologist specializing in forensic evaluations in a variety of settings including in both civil and criminal courts.  She has evaluated hundreds of individuals and been designated an expert witness in District and Superior Courts in Maine.


Dr. Tennies conducts trainings on an array of topics including:

  • child maltreatment
  • high conflict and divorce dynamics
  • risk/threat assessments
  • parental alienation/enmeshment/alignment
  • impact of mental illness (including personality disorders) on parenting
  • vicarious trauma

Dr. Tennies conducts many types of forensic evaluations including:

  • Evaluation of criminal defendants regarding adjudicative competence, criminal responsibility, and violence risk
  • Risk assessment of violence in adolescents and adults
  • Social security evaluations
  • Eligibility evaluations for developmental disability services
  • Parental capacity evaluations
  • Child maltreatment risk assessments

Dr. Tennies has been licensed as an alcohol and drug counselor in Maine since 1997.  She has been a rostered Guardian ad Litem since 1999 and has extensive experience with high conflict family matters as a Guardian ad Litem, as well as expert witness and trainer of other professionals. Presently, she is president of the Maine Psychological Association and also a member of the Executive Committee of the Maine Guardian ad Litem Institute.

Dr. Tennies has a subcontract through the Department of Labor to provide consultation for Job Corps’ Wellness Services, and specifically the Drug and Alcohol programs across the United States.

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