West Leederville
Psychologist Team
Amanda Scott | Clinical Psychologist PRINCIPAL PSYCHOLOGIST
Amanda Scott
Amanda is an valuable addition to the Excelsis Team. Amanda is a warm, caring psychologist, and highly skilled psychologist. Endorsed with the Psychology Board of Australia as a Clinical Psychologist she has over 20 years experience working with individuals and families. Amanda has completed the Graduate Certificate in Autism Diagnosis at the University of Western Australia. Amanda is known for her warmth, quality care, and compassion when working with families and has specialist knowledge and clinical skills in the assessment of ADHD, Developmental Disorders, Specific Learning Disorders, Gifted & Talented, School Readiness, and Autism Spectrum Disorder (ASD).
She has extensive experience in comprehensive diagnostic assessments and believes that through providing quality assessments and accurate diagnoses we are able to better support children and adolescents learn, grow and excel in all areas of life. She provides psychological assessment services to children, adolescents and adults. Amanda has experience working with schools to implement reasonable adjustments for young people with a recognised disability (e.g. ADHD, ASD, Developmental Delays, Learning Disorders, Mental Health Disorders).
She provides psychological counselling and coaching services to children, adolescents, families and mothers and has a special interest in the treatment of Anxiety Disorder, incl OCD, Depression, ADHD, ASD, and complex presentations.
Hannah Rosebrock | Psychologist
Hannah Rosebrock
Hannah is a wonderful addition to our team and is known for her authentic, non-judgemental approach when working with children, young people and families. Hannah holds a Master's degree in Clinical Child and Adolescent Psychology. She has a keen interest in research and knowledge translation and, in addition to working as a psychologist, has several years of experience working in mental health research including suicide prevention research. She enjoys being able to put her knowledge into practice at Excelsis Psychology. Hannah offers psychology services in English and German.
Hannah is passionate about empowering young people, children and their families to overcome their difficulties and live their best lives. She has experience working with a wide range of ages and presentations including, social emotional difficulties, behaviour problems, difficulties with emotion regulation, family-relational problems, disability and neurodiversity. Hannah also provides psychological assessment services to children and young people including assessment for Attention Deficit and Hyperactivity Disorder, Specific Learning Disorders, Disability, and Giftedness.
Hannah uses an integrative approach to therapy, where she draws from Cognitive Behaviour Therapy, Acceptance and Commitment Therapy, Mindfulness, Play Therapy, attachment-based approaches and Family-Relational Therapy depending on her client's unique needs and preferences. She is creative, compassionate and caring. The client therapist relationship takes centre-stage in her therapeutic approach. Hannah values the input from parents, caregivers, grand-parents, siblings and other important people in her client's life in the therapeutic process.
Simone Lombardo | Clinical Psychologist
Simone Lombardo
Simone is a wonderful addition to the Excelsis Team. She is known for her experience working with children, adolescents and their families in a variety of settings. She is a Clinical Psychologist with a Master’s degree in Clinical Psychology.
Simone is passionate about working with children and their families to support emotional well-being, optimise overall functioning and work towards their therapeutic goals. She is known for her warm, compassionate and non-judgemental approach to working with clients. She has a particular interest in Autism Spectrum Disorder and has experience working in early intervention for children with autism. Her therapeutic areas of interest include anxiety (including generalised anxiety, perfectionism, separation anxiety, selective mutism, panic, OCD, panic attacks and social anxiety), school refusal, sleep difficulties, depression, and parenting stress, as well as emotion regulation, anger, behavioural, social and learning difficulties.
Her therapeutic approach draws from evidence-based therapies including Cognitive Behavioural Therapy, Attuned Parenting, Acceptance and Commitment Therapy and mindfulness; as appropriate for each individual. When working with children, Simone recognises the benefit of family involvement in the therapeutic process and embraces systemic family therapy whenever possible.
Aleksandra brings a rare combination of warmth, depth, and international clinical experience to her work with children, adolescents, adults, and families. She holds both a PhD and a Master’s degree in Clinical Psychology, and has worked across a range of international settings, including Europe, the Middle East, and the United States. She is currently progressing toward AHPRA registration in Australia and will then be working toward clinical endorsement. Families often come to Aleksandra when things feel unclear or complicated, for example, when a child is bright but struggling at school, when attention and anxiety overlap, when autism or ADHD is being queried, or when parents are trying to understand what support their child truly needs. Her assessment style is thoughtful, detailed, and practical. She takes time to understand the whole person, not just test scores or checklists, and her reports aim to translate complex assessment findings into clear recommendations for home, school, and future care.
Aleksandra also provides therapy and parent support, drawing on evidence-informed approaches such as ACT and CBT. Her style is gentle, collaborative, and strengths-based, with a strong focus on helping children and families feel understood, supported, and empowered. She may be a good fit for families or clients seeking support with Autism, ADHD, learning or giftedness assessments, School difficulties or unclear learning concerns, School Refusal, Low Mood, Behavioural concerns, Emotional regulation and anxiety, OCD, Selective Mutism, Complex developmental presentations, Parent guidance and family support and Culturally sensitive care. Aleksandra has particular experience in comprehensive assessments for:
Autism
ADHD
Specific Learning Disorders
Giftedness
Complex developmental and emotional presentations
Please note that not every practitioner provides every service, and practitioner suitability is considered individually based on referral concerns, availability, and clinical need.
Catherine Regan | Provisional Psychologist
Catherine Regan
Catherine is a wonderful addition to our team and is known for her authentic, non-judgemental approach when working with children, young people and families. Catherine has a Masters in Professional Psychology. She is a skilled and knowledgeable provisional psychologist with wide-ranging experience and is trained in Cognitive Behavioural Therapy (CBT), Attachment-based therapy, Cognitive Therapy, Interpersonal Therapy (IPT), Solution-Focused Therapy, Attuned Parenting, Acceptance and Commitment Therapy and mindfulness. Catherine is completing her internship under Dr Liezl Addinall, Clinical & Counselling Psychologist’s supervision and guidance.
Her therapeutic areas of interest include anxiety, depression, panic attacks, perfectionism, OCD, pain management, emotional regulation, behavioural difficulties, sleep difficulties, Autism treatment and intervention, ADHD coaching and support, parenting and women’s mental health. She is experienced in completing diagnostic assessments for ADHD/ADD, Behavioural concerns, Educational concerns / Developmental Delays, Gifted and Talented, and Specific Learning Difficulties (known as dyslexia, dysgraphia, dyscalculia).
Catherine’s provides evidence-based treatments that are client-centred and tailored to suit each person’s needs, personality and circumstances. Catherine works with clients across the lifespan and is known for her warm, compassionate manner and her ability to relate to clients from all walks of life.
Ellen Wilson | Psychologist
Ellen Wilson
Ellen Wilson is a dedicated and compassionate psychologist who is deeply committed to supporting children, adolescents, and families. She offers a collaborative and empathetic space where individuals can feel safe to explore their emotions, learn new skills, grow, and heal.
With a background as a school psychologist, Ellen has extensive experience working with neurodiverse children, including those with Autism Spectrum Disorder (ASD) and Attention-Deficit/Hyperactivity Disorder (ADHD). She is passionate about using Play Therapy and other creative, child-centred approaches to help children express themselves, process emotions, and build resilience in a developmentally appropriate way.
Ellen’s strong interest in child wellbeing naturally extends to her work with families. Drawing on her additional qualifications in relationship counselling, she helps families navigate the often complex dynamics of communication, parenting, and connection.
Ellen provides support for a wide range of emotional, behavioural, and relational difficulties, including anxiety, emotional regulation, trauma, depression, ADHD, ASD, learning difficulties, parenting challenges, PTSD, relationship issues, and sleep concerns.
Her therapeutic approach is grounded in evidence-based practices, including Play Therapy, Family Therapy, Acceptance and Commitment Therapy (ACT), Cognitive Behaviour Therapy (CBT), Dialectical Behaviour Therapy (DBT), Eye Movement Desensitisation and Reprocessing (EMDR), Mindfulness, Emotionally Focused Individual Therapy (EFIT), and Schema Therapy. Ellen thoughtfully integrates these approaches to create personalised, client-centred interventions that empower children, young people, and families to reflect, understand, and manage life’s challenges.
Parents often express that finding a psychologist their child connects with can be difficult. Ellen’s warm, genuine, and relatable nature helps children feel comfortable and at ease, fostering trust and engagement in the therapeutic process.
George Thubron | Psychologist
George Thubron
George is a warm, approachable and dedicated Registered Psychologist who works with children, adolescents, families and adults. He is a lovely option for families looking for someone calm, practical and easy to talk to, particularly where concerns are connected to school, learning, friendships, emotional regulation, behaviour, confidence or neurodevelopmental differences.
George has a background as a school psychologist and brings valuable experience supporting children and young people within educational settings. This means he has a strong understanding of how emotional, behavioural, developmental and learning needs can present at school, and how these difficulties can impact a child’s confidence, classroom participation, friendships, academic progress and overall wellbeing.
George works across a broad range of presentations, including anxiety, low mood, phobias, panic attacks, emotional regulation difficulties, behavioural concerns, stress, adjustment difficulties, school-related concerns, Autism and ADHD-related needs. He is especially well suited to children, adolescents and families who may need a practitioner who understands both the clinical and educational context, and who can help make sense of what is happening across home and school.
George draws on a range of evidence-based therapeutic approaches, including Cognitive Behavioural Therapy, Acceptance and Commitment Therapy, Dialectical Behaviour Therapy and mindfulness-based strategies. His approach is collaborative, non-judgemental and practical, with a focus on helping young people feel safe, heard and understood.
George is known for his thoughtful and supportive approach, particularly with children and adolescents who may feel overwhelmed, misunderstood, anxious, disengaged or unsure how to express what they are experiencing. His work is focused on helping young people feel supported, capable and more confident at home, at school and in their everyday lives.
George may be a good fit for clients or families seeking support with:
Anxiety
Depression and low mood
Phobias
Panic attacks
Autism and ADHD-related concerns
School-related concerns
School refusal
Academic and learning concerns
Emotional regulation difficulties
Anger and frustration
Behavioural concerns
Stress and adjustment difficulties
Self-esteem and confidence
Friendship and peer difficulties
Social skills and communication difficulties
Supporting children through school transitions
Understanding and responding to challenging behaviour
Supporting adolescents who are withdrawn, anxious, overwhelmed or disengaged
Parent support and guidance
Building coping skills and resilience
Confidence in the classroom and school environment
Supporting neurodiverse young people at home and school
Helping families understand school-based emotional and behavioural concerns
Practical strategies for home, school and everyday life
George is known for his warm, calm and thoughtful approach, particularly with clients who may be feeling overwhelmed, misunderstood, anxious or unsure how to move forward. His background as a school psychologist gives him a strong understanding of how emotional, behavioural, developmental and learning needs can impact not only young people, but families and adults navigating stress, change and day-to-day functioning.
He works collaboratively with children, adolescents, adults and families to better understand what is happening, develop practical coping strategies, and build confidence, resilience and emotional wellbeing across home, school, work and everyday life.
Please note that not every practitioner provides every service, and practitioner suitability is considered individually based on referral concerns, availability and clinical need.
Dr Liezl Addinall | Director - Principal Clinical & Counselling Psychologist
Liezl is the founder of Excelsis Psychology and has a wealth of experience working with children, adolescents, parents and families. She is endorsed with the Psychology Board of Australia as a Clinical & Counselling Psychologist and has over 16years experience working with young people, and families. Liezl has worked in schools, hospitals (inpatient mental health) and the not for profit sector. Liezl founded Excelsis Psychology as she is passionate about private practice, providing high quality psychology services to children, adolescents, mothers & families mental health care to Perth and surrounding areas.
She is known for her exceptional client care and warm, caring nature. She provides a range of psychology services to children and adolescents, parents, families and has a passion for supporting women with their wellbeing and mental health.
Her therapeutic areas of interest include providing support to children and adolescents who present with anxiety (incl. phobias, panic disorder, separation anxiety, selective mutism, social anxiety), adjustment disorders, depression, developmental concerns, family issues & stress, grief & loss. She also works with parents and families and has a special interest in perinatal concerns, and women’s mental health. Liezl is especially passionate about supporting the wellbeing of parents and families by providing them with practical skills to develop stronger relationships and connections. Liezl is known for providing quality perinatal support services to assist mothers, and their babies in a warm, caring and nurturing space.
She is skilled in diagnostic assessments and has a particular interest in the assessment of Attention Deficit/Hyperactivity Disorder, Autism Spectrum Disorder, Behavioural concerns, Communication Disorders, Educational concerns / Developmental Delays, Gifted and Talented, Memory, Language & Auditory Processing, School Readiness, and Specific Learning Difficulties (known as dyslexia, dysgraphia, dyscalculia).