Joseph Hopkins, PhD

• Lee, D., Springfield, A., & Patel, P. (in press). Postural practices in infancy: How skill status and environment shape early motor development. Infant Behavior and Development.

• Patel, P., & Lee, D. (in press). Posture-specific infant activity across the first year: A longitudinal case study using behavioral and movement analysis. Journal of Motor Learning and Development. https://doi.org/10.1123/jmld.2025-0134

• Lee, D., Leyva, J., & Ulrich, B. (2025). Everyday locomotor experience prior to walking: A longitudinal case series of crawling, cruising, and falls. Medical Research Archives, 13(11). https://doi.org/10.18103/mra.v13i11.7110

• Springfield, A. L., & Lee, D. K. (2025). Investigating the effects of age and autonomous locomotion on infant location use during the first year. Infant Behavior and Development, 81, Article 102155.

• Patel, P., Pandya, H., & Lee, D. (2025, June 3). Automating infant posture detection using deep neural network-based classification [Conference presentation]. North American Society for the Psychology of Sport and Physical Activity Annual Conference, South Lake Tahoe, CA, United States.

• Hospodar, C. M., Hoch, J. E., Lee, D. K., Shrout, P. E., & Adolph, K. E. (2021). Practice and proficiency: Factors that facilitate infant walking skill. Developmental Psychobiology, 63(7), Article e22187.

• Lee, D., Barros, J., & Hauck, J. (2021). Realistic dosage of tummy time practice during infancy. Medical Research Archives, 9(6). https://doi.org/10.18103/mra.v9i6.2456

• Heiman, C. M., Cole, W. G., Lee, D. K., & Adolph, K. E. (2019). Object interaction and walking: Integration of old and new skills in infant development. Infancy, 24(4), 547–569.

• Lee, D. K., & Sansom, J. K. (2019). Early treadmill practice in infants born with myelomeningocele: A pilot study. Pediatric Physical Therapy, 31(1), 68–75.

• Lee, D. K., Cole, W. G., Golenia, L., & Adolph, K. E. (2018). The cost of simplifying complex developmental phenomena: A new perspective on learning to walk. Developmental Science, 21(4), Article e12615.