Bayley Scale of Infant Development-III (BSID-III)
- Descriptive Information
- Title-Bayley Scale of Infant Development, Edition-3, Dates of Publication in 2005. BSID-II from 1993.
- Author– Nancy Bayley PhD in psychology.
- Source (publisher or distributor, address)-Pearsonclinical.com
- Costs (booklets, forms, kit)*-range from $1,025 for complete rolling kit to $1,315 for comprehensive kit with screening tool. Able to purchase individual items as well on the website.
- Purpose*– to measure developmental delays in the very young and non-verbal children.
- Type of Test– screening tool.
- Target Population and Ages– down syndrome, pervasive developmental disorder, CP, specific or suspected language impairment, asphyxiation at birth, prenatal alcohol exposure, small for gestational age, premature or low birth weight, or other children at risk for developmental delays. For ages 1-42 months.
- Time Requirements – Administration and Scoring-30-90 minutes.
- Test Administration
- Administration-2 questionnaires for social-emotional and adaptive behavior(using ABAS-II) and 3 sections scored by examiner(cognitive, language, and motor).
- Scoring -0 or 1 depending on if the child is able to perform the activity for cognitive, motor(fine and gross subscales), and language(expressive and receptive subscales) scored by examiner. Social-emotional and adaptive questionnaires filled out by parent/caregiver with same scale 0 or 1. No MCID due to this being a screening tool.
- Type of information, resulting from testing-normative data, percentile ranks, qualitative description, 95% confidence interval, standard scores, age equivalents, with cut scores, T scores, and a graph report.
- Environment for Testing– single room for quiet environment with minimal distractions and clean mat for motor activities.
- Equipment and Materials Needed-BSID-III kit including administration manual, technical manual, motor, language, and cognitive record forms, social-emotional and adaptive questionnaires, observation checklist, caregiver report form, scoring DVD, administration DVD, stimulus book, 33mm bottle with lid, 5 by 7 mirror, 4 inch ball, 4 small and 2 medium blocks, red blocks, blocks with holes, doll, ducks, glitter bracelet, story book, stepping path, small drawstring bag, puzzles, picture book, oval shoe lace, memory cards, ad lacing card. Also needed are a table, chair, and area for motor tasks.
- Examiner Qualifications –level C: doctorate in psychology or education, licensure in related field, or certification in professional organization such as APA, NASP, NAN, or INS.
- Psychometric Characteristics* – new scoring used to extend floor and ceiling effects to better measure and categorize developmental delays. New version attempting to eliminate all biases and datedness to ensure clinical utility of this screening tool.
- Standardization/normative data– normative data found for the BSID-III in 2004 using 1700 children between age 16 days and 43 months 15 days in the US.
- Evidence of Reliability– easily reproduced due to ease of scoring from 0-1 depending on completion/incompletion of task. Reliability coefficients ranged from .86 to .93 in several studies. Test retest reliability ranged from .71 to .92. Inter-rater reliability ranged from .59 to .82.
- Evidence of Validity– article states good validity of the BSID-III at 2-4 years in preterm children. Predictive validity at .81 who stayed in same developmental classification (normal, mild, moderate, severe delayed). Another website states good convergent and divergent validity. It states this test has strong correlations with the WPPSI-III, PLS-4, and PDMS-2. Unable to compare scores from BSID-II and BSID-III due to different scoring system. Discriminative to determine if a child is developmentally delayed or not based of age referenced normative data.
- Summary Comments*
- Strengths-Ideal for use when you suspect delays or problems in early development, determines the need for further in-depth assessment, indicates strengths, weaknesses, and competencies so that parents and professionals can properly plan for the child, aligns with IDEA requirements for support and intervention, excellent for use in cross-disciplinary teams, and allows for more caregiver involvement in test items.
- Weaknesses– expensive and time consuming.
- Clinical Applications– able to create goals easily from scoring items that child in unable to perform, observe of the child moves and responds with language and cognition, able to distinguish fine and gross motor function deficits and employ interventions appropriately, able to select services in accordance with IDEA.
References:
- pearsonclinical.com
- therapybc.com
- Bode MM, D’Eugenio DB, Mettelman BB, Gross SJ. Predictive validity of the Bayley, Third Edition at 2 years for intelligence quotient at 4 years in preterm infants. J Dev Behav Pediatr. 2014 Nov-Dec;35(9):570-5.
Article Summary:
Bode MM, D’Eugenio DB, Mettelman BB, Gross SJ. Predictive validity of the Bayley, Third Edition at 2 years for intelligence quotient at 4 years in preterm infants. J Dev Behav Pediatr. 2014 Nov-Dec;35(9):570-5.
The purpose of this study was to determine the predictive validity of the BSID-III at age 2 for infants aged less than or equal to 30 weeks gestational age. This was a prospective regional study in Syracuse New York ay Crouse Hospital. The study population was picked from July 2005 to June 2006. 172 children met the inclusion criteria of age and suspected developmental delay. 156 lived to age 4 for comparison of data obtained. They were evaluated at 2 and 4 years old. There was a control group of children that was matched socio-economically to provide the normative data. The preterm infants were labeled as normal, mildly delayed, moderately delayed, or severely delayed based on outcomes of the BSID-III and WPPSI-III using standard deviations from normative data from the control group. The WPPSI-III IQ test correlated well with the BSID-III cognition and language scales .81 and .78 respectively. Based on these results 81% of the preterm infants were still in the same developmental classification at 4 years old. In conclusion this test is shown to be valid for long term IQ of preterm infants and should be used to screen and establish guidelines for neonatal care.
2 responses to “Bayley Scale of Infant Development-III (BSID-III)”
Leave a Reply
You must be logged in to post a comment.
This seems like a very good test with research to back it that evaluates physical function and gets the parents perspective. I would be interested to see if any shortened and less expensive versions will be made that is more applicable in the clinic.
Yes, this is a long one to administer for sure! I am not aware of a shorter version. The article review indicates predictive potential for this measure, that can be very important but note it is related to cognition. May not be something PTs use a lot unless for a global EI evaluation.