Psychomotor Development Index
Synonyms
Definition
Psychomotor Developmental Index generally refers to a measure of motor skills that also involve some aspects of conceptual or psychological functioning. The term Psychomotor Developmental Index (PDI) is most closely associated with the Bayley Scales of Infant Development (BSID), first published by Nancy Bayley in 1969 and revised in 1993 as the BSID-II. The BSID-II includes the following three scales, mental, motor, and behavior, with the motor scale referred to as the Psychomotor Developmental Index (PDI). Test items for the PDI include motor skills such as rolling, crawling, grasp, and use of utensils.
Assessment of developmental functions emerged in the twentieth century with the advent of assessments such as the Gesell System of Developmental Diagnosis (1925), the Cattell Infant Intelligence Test (1940), and the original Bayley Scales of Infant Development (1969). These assessments focused on documenting normative expectations and...
References and Readings
- Bayley, N. (1969). Manual for the Bayley scales of infant development. San Antonio, TX: The Psychological Corporation.Google Scholar
- Bayley, N. (1993). Manual for the Bayley scales of infant development. San Antonio, TX: The Psychological Corporation.Google Scholar
- Cattell, P. (1940). The measurement of intelligence of infants and young children. New York: The Psychological Corporation.Google Scholar
- Gessell, A. (1925). The mental growth of the pre-school child. New York: MacMillan.Google Scholar
- Glenn, S. M., Cunningham, C. C., & Dayus, B. (2001). Comparison of the 1969 and 1993 standardizations of the Bayley mental scales of infant development for infants with Down’s syndrome. Journal of Intellectual Disability Research, 45(1), 55–62.Google Scholar
- Provost, B., Heimeryl, S., McClain, C., Kim, N., Lopez, B., & Kodituwakku, P. (2000). Concurrent validity of the Bayley scales of infant development II motor scale and the Peabody developmental motor scales in two-year-old children. Physical & Occupational Therapy in Pediatrics, 20(1), 5–18.Google Scholar
- Provost, B., Lopez, B., & Heimerl, S. (2006). A comparison of motor delays in young children: Autism spectrum disorder, developmental delay, and developmental concerns. Journal of Autism and Developmental Disorders. Retrieved on March 30, 2011, from http://cdd.unm.edu/Ec/pubs/pdfs/comparisonofmotordelays.pdf