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Dr. Katherine Holshausen 
Ph.D., C.Psych.
Clinical Psychologist


  • Clinical Psychologist registered with the College of Psychologists of Ontario (#6400)

  • Member of the Ontario Psychological Association

  • Member of the Canadian Psychological Association

Current Positions:

  • Assistant Professor, Department of Psychiatry & Behavioural Neurosciences

    • McMaster University​


  • Pre-doctoral Psychology Internship

    • St. Joseph’s Healthcare Hamilton

  • Doctorate of Philosophy (PhD) in Clinical Psychology

    • Queen’s University

  • Masters of Science in Clinical Psychology

    • Queen's University​

  • ​Honours Bachelor of Arts - Psychology, Neuroscience, & Behaviour

    • McMaster University​

Selected Delivered Workshops

  • An introduction to providing Dialectical Behaviour Therapy

    • 5 day workshop (2020)

  • Assessment and treatment of suicidal behaviours (2020)

  • Mindfulness of big emotions (2019)

  • Mindfulness practices in everyday life (2015)

Recent Professional Development

  • Presence and Self-Compassion in Psychotherapy: A Foundational Approach for Therapists & Clients (2021)

  • Emotion Focused Therapy: Attachment Science in Practice (2021)

  • Prolonged Exposure for Post-traumatic Stress Disorder (2018)

Two little girls calm the crying boy. isolated on the white background.jpg

Selected Publications

  • Sex and gender in treatment response to dialectical behaviour therapy: current knowledge, gaps, and future directions. (2022).

  • Posttraumatic stress disorder symptomatology and substance use in an outpatient concurrent disorders sample. (2021).

  • What is normal cognition in depression? Prevalence and functional correlates of normative versus idiographic cognitive impairment. (2020).

  • Evidence-based Psychotherapies. Chapter in S. McClintock & J. Choi (Eds). Handbook of Neurocognitive Function in Depression: Scientific Foundations and Clinical Practice. (2021).

  • Delay discounting as a transdiagnostic process in psychiatric disorders: A meta-analysis. (2019).

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