Dr Erin Warriner Clinical Psychologist
Clinical Psychologists & Neuropsychologists
Assessment & Treatment
Serving Hamilton, Halton, Brant, Niagara and surrounding regions.
Home Assessments Interventions Fees Contact Info

Education and Experience
Dr Erin Warriner, CPsych is a Psychologist registered with the College of Psychologists of Ontario with practice areas in Clinical Psychology and Neuropsychology across all ages. From working in a variety of acute and rehabilitation hospitals, university-based counselling clinic and private practice settings, she has extensive experience in psychological assessment and treatment:

  • Psychological & Diagnostic Assessments
  • Psychoeducational Assessments
  • Neuropsychological Assessments
  • Cognitive Remediation and Rehabilitation
  • Psychological Therapy
Dr Warriner received her Master’s and PhD degrees in Clinical Psychology with Neuropsychology subspecialty from the University of Windsor (2001 & 2004), including educational and clinical training opportunities with children, adolescents, adults, and seniors in assessment and psychotherapy. She completed an American and Canadian Psychological Associations (APA/CPA)-accredited Pre-Doctoral Internship at London Health Sciences in the Clinical Neuropsychology track (2003-2004) and Post-Doctoral Fellowship at Hamilton Health Sciences in the Acquired Brain Injury and Rehabilitation Programs (2004-2005).

Dr Warriner worked at McMaster Children’s Hospital for 12 years (2004-2016) providing diagnostic psychological, rehabilitation, developmental, neuropsychological, and psycho-educational assessments for children and adolescents with a wide variety of neurological, psychiatric, genetic, developmental, and general medical conditions, such as:

  • Concussion & Brain Injury
  • Epilepsy/Seizures
  • Asperger Syndrome & Autism
  • Nonverbal Learning Disability
  • Academic Learning Disability
  • Attention-Deficit/Hyperactivity Disorder
  • Anxiety
  • Depression
Dr Warriner was also the Neuropsychologist on the Integrated Stroke Unit specialized interdisciplinary inpatient rehabilitation team at Hamilton General Hospital (2006-2014). She provided adults and seniors with neuropsychological assessments and emotional/behavioural evaluations and worked with the team on identifying cognitive problems, providing differential and comorbid diagnoses, formulating rehabilitation strategies and treatment plans, and offering support for behavioural issues and difficulties coping/adjustment. She saw individuals with a variety of neurological and medical conditions, such as:

  • Strokes & Aneurysms
  • Traumatic Brain Injury
  • Multiple Sclerosis
  • Vascular & Alzheimer’s Dementias
  • Heart Disease & Diabetes
  • Depression, Anxiety, or Adjustment/Coping Difficulties
Dr Warriner opened her own private practice in 2009, providing developmental, psychological, psychoeducational, and neuropsychological diagnostic assessments and treatment to children, adults and seniors.

Additionally, Dr Warriner has held an Assistant Professor (currently Adjunct) position in the Department of Psychiatry and Behavioural Neurosciences at McMaster University. She was formerly the Director of Training for the Clinical Neuropsychology Pre-doctoral Residency Program at Hamilton Health Sciences (2013-2016). She has research interests and published works in the areas of the utility and validity of neuropsychological measures and cognitive screening tools; the influence of various biological/psychosocial factors on cognitive and emotional manifestations in acquired brain injury; and adjustment/coping with changes in medical/neurological conditions.

Dr Warriner’s curriculum vitae can be made available on request.

Dr. Justine Spencer, CPsych is a Psychologist registered with the College of Psychologist of Ontario with practice areas in Clinical Psychology and Neuropsychology with adults and seniors. She obtained her PhD degree in Psychology from McMaster University (2015), where her research focused on examining the brain-behaviour mechanisms underlying social and visual perceptual deficits in persons with Schizophrenia. Clinically, Dr. Spencer completed a Canadian Psychological Association (CPA) accredited Pre-Doctoral Internship in Clinical Neuropsychology at Hamilton Health Sciences. She has also completed clinical training at St. Joseph’s Healthcare Hamilton and Baycrest Health Centre. In addition, Dr. Spencer currently works as a Clinical Neuropsychologist on the Inpatient Stroke Rehabilitation Unit at the Hamilton General Hospital. She is a current member of the Canadian Psychological Association (CPA) and Ontario Psychological Association (OPA) and holds a part-time faculty appointment as Assistant Clinical Professor in the Department of Psychiatry and Behavioural Neurosciences at McMaster University. Dr. Spencer’s curriculum vitae can be made available on request.

Dr. Ayse Unsal, CPsych, BCN, is a psychologist registered with the College of Psychologists of Ontario in the area of clinical neuropsychology with adults. She obtained her PhD at the University of Waterloo, and conducted both graduate and postdoctoral research in the neurophysiological and neuroanatomical bases of neuropsychological functions in individuals with and without brain injuries. She practices in an adult clinical neuropsychology consultation service at Hamilton Health Sciences, and has also been an Assistant Clinical Professor part-time in the Department of Psychiatry and Behavioural Neuroscience of McMaster for over 19 years. Dr. Unsal is Board Certified in Neurofeedback by the Biofeedback Certification International Alliance which requires the demonstration of advanced competency to use neurofeedback for the purposes of monitoring and assisting in physiological self-regulation. She is the principal investigator in an ongoing study of the effects of neurofeedback training for individuals with Traumatic Brain Injury at Hamilton Health Sciences, General Hospital. Dr. Unsal's curriculum vitae can be made available upon request.

Dr. Narmeen Ammari, CPsych is a Psychologist registered with the College of Psychologist of Ontario with practice areas in Clinical Psychology and Neuropsychology with adults and seniors. She completed her Master's degree (2009) and PhD degree (2016) in Clinical Psychology at York University. Over the past several years, Dr Ammari has completed training and clinical experience in both assessment and treatment at the Baycrest Geriatric Health Care System (Neuropsychology, Memory Intervention, and Clinical Rehabilitation), West Park Healthcare Centre in Toronto (Neuropsychology and Cognitive Health Program), the Rotman Research Institute of Baycrest, Toronto Western Hospital (Epilepsy and Movement Disorders), the Hamilton Program for Schizophrenia, and the York University Psychology Clinic. Her primary area of practice pertains to neuropsychological assessment of acquired brain injury (e.g., stroke, brain tumors, traumatic brain injury, etc.), neurodegenerative disorders (e.g., Alzheimer’s disease and other dementias), and mental health conditions. Additionally, she also provides evidence-based therapy to support adults and seniors with various challenges, including anxiety, depression, chronic pain, and traumatic brain injury. She is a recipient of the Canadian Psychological Association's Certificate for Academic Excellence (2009) and has held several prestigious and highly competitive national and provincial awards. She is a current member of the Canadian Psychological Association (CPA). Dr. Ammari’s curriculum vitae can be made available on request.


Developmental & School Entry Educational Planning Assessments (~18 months to 6 years)

Psycho-educational & Clinical Diagnostic Assessments (~7 to 21 years)

Neuropsychological & Clinical Diagnostic Assessments (All ages from 5 years +)

Neurocognitive Screening Assessments for Seniors

Cogmed Working Memory Training™ (All ages from 4 years +)

Cognitive Neurorehabilitation & Individual Psychological Therapy

Quantitative EEG / Brain Mapping Evaluations & Neurofeedback for Adults (18 years +)

Education & Consultation


Online Form

Phone: (905) 643-1877
Fax: (905) 643-4941

Office Location:
The Hamilton Business Park
1100 South Service Road, Suite 224
Hamilton, ON
L8E 0C5

Easily accessed - just off the QEW Niagara, located between Fruitland Rd & Fifty Rd

Also providing psychological and neuropsychological services to residents of:
  • Oakville
  • Burlington
  • St. Catharines
  • Niagara Falls
  • Brantford
  • Guelph

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