The evidence behind the approach

The Institute of Neuro-Physiological Psychology (INPP) approach is grounded in a rapidly growing body of scientific evidence on neurodevelopment and the role of primitive reflexes in learning and behaviour.

Below is a selection of books and research articles for anyone who would like to explore the evidence and theory in more depth.

Books

Reflexes, Movement, Learning & Behaviour: Analysing and unblocking neuro-motor immaturity by Sally Goddard Blythe is the best introduction to neuro-development available. Drawing on the rapidly expanding science of neuroplasticity, it explains how supporting primitive reflexes to integrate helps higher-level skills become less effortful.

Book cover titled "Reflexes, Movement, Learning & Behaviour" by Sally Goddard Blythe. Features a digital illustration of a brain and a side profile of a human face.

Feeling Smarter and Smarter: Discovering the Inner-Ear Origins and Treatment for Dyslexia/LD, ADD/ADHD, and Phobias/Anxiety by Harold N. Levinson MD draws on over 50 years of clinical research to argue that many learning difficulties and chronic anxiety start with how the inner ear and the brain's balance centre work together, and not with a person's underlying intelligence. That's the same emphasis on the inner ear (the site of the body’s critical organs for balance) that INPP places at the very base of early development. Coming from a medical doctor working from an entirely different angle, it's a compelling, independent case for why getting the inner ear right matters so much.

Book cover titled "Feeling Smarter and Smarter" with subtitle "Discovering the Inner-Ear Origins and Treatment for Dyslexia/LD, ADD/ADHD, and Phobias/Anxiety" by Harold N. Levinson, MD. The design features a side profile silhouette of a person's head with a yellow background on the right and a dark blue background with molecular diagram-like graphics on the left, representing brain or neurological themes.

The Brain That Changes Itself: Stories of Personal Triumph from the Frontiers of Brain Science by Norman Doidge is a widely-respected book that explains the exciting science of neuroplasticity, useful for parents (or referring professionals) who want to understand better how the brain can change.

Book cover for 'The Brain that Changes Itself' by Norman Doidge featuring an illustrated brain with red arrows indicating neural pathways and quotations praising the book from The New York Times and The Times.

Integrating Primitive Reflexes Through Play and Exercise: An Interactive Guide for Parents, Teachers, and Service Providers by  Kokeb Girma McDonald, a paediatric occupational therapist, is a series of books offering ingenious play-based activities to support reflex integration.

Book cover titled "Integrating Primitive Reflexes Through Play and Exercise, Book 1" by Moro Reflex, authored by KSAK Girmal McDonald. Features a cartoon of two children, one standing with arms raised and smiling, the other sitting with arms crossed, on a yellow background.

Disconnected Kids (Third Edition): The Groundbreaking Brain Balance Program for Children with Autism, ADHD, Dyslexia, and Other Neurological Disorders by  Dr. Robert Melillo is worth a read.  Its most recent edition has been updated to reflect the growing evidence on the fundamental importance of retained primitive reflexes in children who show difficulties across learning and everyday life. Although it’s a different model to the INPP approach, it's aligned in many ways and offers a useful complementary read for parents wanting more background information.

Book cover for 'Disconnected Kids' by Dr. Robert Melillo, 3rd edition, with a white background, colorful abstract shapes at the top and bottom, and black text. The cover highlights a quote about a new approach, emphasizes achieving results without drugs, and mentions the Brain Balance program for children with autism, ADHD, dyslexia, and other neurological disorders.

The Symphony of Reflexes: Interventions for Human Development, Autism, ADHD, CP, and Other Neurological Disorders" by Bonnie Brandes is a useful resource for understanding how unintegrated primitive reflexes impact neurological, cognitive, and social development in children and adults.

Book cover titled 'The Symphony of Reflexes' by Bonnie L. Brandes Med, with silhouettes of a child and an adult holding hands, and musical notes in the background.

Academic articles

2025

2024

2023

Grigg TM, Culpan I & Fox-Turnbull W

Primitive reflex integration and reading achievement in the classroom.

Journal of Neurology and Experimental Neuroscience, 9(1): 18–26.

Kalemba A, Lorent M, Goddard Blythe SA & Gieysztor E INPP

The correlation between residual primitive reflexes and clock reading difficulties in school-aged children: A pilot study.

International Journal of Environmental Research and Public Health, 20(3): 2322.

2022

Richards L, Avery R, Gray S & Price R

Relationship of retained primitive reflexes and handwriting difficulty in elementary-age children.

American Journal of Occupational Therapy, 76(Supplement 1).

Feldhacker DR, Cosgrove R, Feiten B, Schmidt K & Stewart M

The correlation between retained primitive reflexes and scholastic performance among early elementary students.

Journal of Occupational Therapy, Schools & Early Intervention, 15(3): 288–301.