Every child experiences the world through their unique sensory lens. From the moment they're born, children are constantly taking in information through their senses: touch, sight, sound, movement, body awareness, taste, and smell. These sensory experiences form the foundation for everything they do: learning, playing, relating to others, and navigating their daily routines.
What many parents don't realize is that sensory processing skills develop gradually over time, just like walking or talking. Some children may be highly sensitive to certain sensations, while others might seek out intense sensory experiences. Both patterns are completely normal variations in how developing nervous systems organize and respond to the world around them.
These developmental milestones flip cards are designed to help you understand what sensory development typically looks like at different stages, celebrate your child's unique sensory profile, and recognize when they might benefit from additional support. Rather than viewing sensory differences as problems to fix, I encourage you to see them as valuable information about how your child's remarkable brain works.
My hope is that these milestones help you become a more confident observer and advocate for your child's sensory needs, whether that means creating calming environments, providing more sensory-rich experiences, or simply understanding why they respond to the world the way they do. Remember, there's no "perfect" sensory system, only unique children learning to thrive in their own beautiful way.
Supporting Child Development Evidence for Sensory Processing Development Flip Cards
The milestones and insights in these flip cards are grounded in decades of research on child development, sensory processing development and pediatric occupational therapy practice. These references represent foundational studies on sensory integration theory, current research on sensory processing patterns in children, and evidence-based approaches to supporting sensory development across childhood.
Foundational Sensory Processing Research
NCBI StatPearls. (2023). Sensory integration: Current evidence and clinical applications.
Ayres, A. J. (2005). Sensory integration and the child: Understanding hidden sensory challenges. Western Psychological Services.
Ben-Sasson, A., Carter, A. S., & Briggs-Gowan, M. J. (2009). Sensory over-responsivity in elementary school: Prevalence and social-emotional correlates. Journal of Abnormal Child Psychology, 37(5), 705-716.
PMC. (2023). COVID-19 effects on social-emotional development: Impact of early intervention.
PMC. (2020). Vulnerability and resilience in children during the COVID-19 pandemic.
Miller, L. J., et al. (2007). Concept evolution in sensory integration: A proposed nosology for diagnosis. American Journal of Occupational Therapy, 61(2), 135-140.
Schaaf, R. C., et al. (2014). Occupational therapy using sensory integration for children with autism: A randomized controlled trial. American Journal of Occupational Therapy, 68(5), 562–571.
Baranek, G. T., et al. (2006). Sensory experiences questionnaire: Discriminating sensory features in young children with autism, developmental delays, and typical development. Journal of Child Psychology and Psychiatry, 47(6), 591-601.
Miller, L. J., et al. (2007). Vestibular-based interventions can improve participation for children with sensory modulation challenges. American Journal of Occupational Therapy, 61(2), 174-181.
Koenig, K. P., & Rudney, S. G. (2010). Performance challenges for children and adolescents with difficulty processing and integrating sensory information. American Journal of Occupational Therapy, 64(3), 430-442.
Ashburner, J., et al. (2008). Sensory processing and classroom emotional, behavioral, and educational outcomes in children with autism spectrum disorder. American Journal of Occupational Therapy, 62(5), 564-573.
Case-Smith, J., Weaver, L. L., & Fristad, M. A. (2015). A systematic review of sensory processing interventions for children with autism spectrum disorders. American Journal of Occupational Therapy, 69(5), 6905180030p1-6905180030p12.
Frontiers in Integrative Neuroscience. (2020). Evaluating sensory integration/sensory processing treatment: Issues and analysis.
Pfeiffer, B., Stein Duker, L., Murphy, A., & Shui, C. (2011). Effectiveness of sensory integration interventions in children with autism spectrum disorders: A pilot study. American Journal of Occupational Therapy, 65(1), 76-85.
Iwanaga, R., Honda, S., Nakane, H., Tanaka, K., Toeda, H., & Tanaka, G. (2014). Pilot study: Efficacy of sensory integration therapy for Japanese children with high-functioning autism spectrum disorder. Occupational Therapy International, 21(1), 4-11.
Chapman, R., & Veit, W. (2022). The neurodiversity approach(es): What are they and what do they mean for researchers? PMC, 9261839.
Therrien, M. & Light, J. (2018. Promoting engagement in children through play and sensory experiences. Canadian Journal of Occupational Therapy, 85(3), 187–197.
Activity-based sensory interventions. Multiple studies showing superior effectiveness of naturalistic sensory supports.
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