Welcome to Excelsis Psychology – Helping Children, Teens & Families Thrive

Founded by Clinical and Counselling Psychologist, Dr Liezl Addinall, Excelsis Psychology is a warm and professional private practice committed to empowering children, adolescents, parents, and families to flourish through all stages of development.

Based in Perth, we provide high-quality psychological care that is compassionate, evidence-based, and tailored to the individual. Whether your child is navigating emotional challenges, school stress, developmental concerns, or you're a parent seeking support, we’re here to help.

Our psychologists are experienced in working across a range of presentations, including:

• Anxiety, mood difficulties, school difficulties, emotional regulation

• ADHD, Autism Spectrum Disorder, and behavioural concerns

• Learning difficulties (including dyslexia, dysgraphia, dyscalculia) and giftedness

• School readiness and developmental assessments

• Perinatal and parenting support

• Family and relationship stressors

We offer comprehensive assessments and therapy using trusted, evidence-informed approaches to help clients build resilience, develop coping strategies, and achieve lasting change.

Our approach is collaborative and practical.
We work closely with families, GPs, paediatricians, psychiatrists, educators, and other professionals to ensure a well-rounded, effective support system for each client.

Referrals are welcome from parents, schools, allied health providers, and medical professionals. Let us support your family’s wellbeing with care that is thoughtful, personalised, and grounded in clinical excellence.

Contact us today to learn more or make a confidential appointment.