Bayley Scales of Infant and Toddler Development, Fourth Edition

Instrument Name: Bayley Scales of Infant and Toddler Development, Fourth Edition

Abbreviation: Bayley™-4

Points for Consideration:

Highly used as a discriminative assessment. Not necessarily evaluative - more research needed.

Description of Tool:

The Bayley-4 is a ClinRO measure designed to assess functional and cognitive abilities in infants from 1 to 42 months. This version of the tool is most commonly deployed in clinical trial settings and clinical practice.

Other Related Tools (if applicable):

Bayley Scales of Infant and Toddler Development, Third Edition

Minimum Qualification Required by COA Administrator: MA or BA

Comment:

Bayley-4 was developed from Bayley-III

Year: 2019

Objective of Development:

To identify potential delays in children and get interventions in place early on

Population of Development: Age range (therapeutic indication):

16 days to 42 months (Generic for Mental Disorders)

Pediatric Population(s) in which COA has been used:

Congenital, Hereditary and neonatal diseases and Abnormalities; Nervous system diseases

COA type: PerfO

Number of Items Not reported

Mode of Administration: Clinician-rated

Data Collection Mode:

Time for Completion: 30 to 70 minutes (depending upon age of child)

Response Scales: Not reported

Summary of Scoring:

Available Scores:
Subtest level scaled scores, domain level composite scores, percentile ranks, confidence intervals, developmental age equivalents, and growth scale values (score ranges not reported)

Weighting: Not reported

Score Interpretation:
Higher score= Better performance

Evidence of Literature Review: None identified

Evidence of Instrument Review: Yes

Evidence of Clinical or Expert Input: Yes

Evidence of concept elicitation in target patient population: None identified

Evidence of a Saturation Grid: None identified

Evidence for Selection of Data Collection Method: None identified

Recall/Observation Period: Present time

Evidence for Selection of Reponse Options: None identified

Evidence of cognitive interviewing of draft instrument in target patient population: None identified

Evidence of Preliminary Scoring of Items and Domains: None identified

Evidence related to respondent and administrator burden: Yes

Evidence of a Conceptual Framework: None identified

Evidence of an item-tracking matrix: None identified

Evidence related to item selection: None identified

Evidence of re-testing the final version: None identified

Internal consistency (Cronbach's alpha): Yes

Evidence of internal consistency: Available on Pearson website

Test-retest Reliability (ICC):

Pearson Website

Correlation coefficient: Not stated
Adaptive behavior: 0.72-0.87
Was a definition of stability applied to identify stable patients: Not stated
Time frame or interval between the two administrations: Not stated
Population/Disease: Not reported

Inter-rater/ inter-interviewer reliability (kappa):

Pearson Website: Correlation coefficient: Not stated Adaptive behavior: 0.67-0.81 (Method Not specified) Population/Disease: Not reported

Evidence of test-retest or inter-rater reliability: Yes

Concurrent validity (convergent, divergent):

None identified

Known-group validity:

None identified

Evidence of Translatability Assessment: None identified

Evidence related to missing data: None identified

Evidence for Selection of Recall Period: None identified

Evidence of Administration Instructions and Training Provided: Yes

Evidence of concurrent validity: None identified

Evidence of known-groups validity: None identified

Evidence of ability to detect change over time: None identified

Ability to detect change (Responsiveness):

None identified

Responder Thresholds:

None identified

Evidence of responder thresholds: None identified

Pearson’s Clinical Assessment group. Bayley Scales of Infant and Toddler Development™, Fourth Edition (Bayley™-4) [Internet]. Canada: Pearson; Consulted on March 23rd. Available from: https://www.pearsonclinical.ca/en/products/product-master.html/item-595#:~:text=The%20Bayley%20Scales%20of%20Infant,Q%2DGlobal%C2%AE%20software%20system.

Pearson’s Clinical Assessment group. Bayley Scales of Infant and Toddler Development™, Fourth Edition (Bayley™-4) [Internet]. Canada: Pearson; Consulted on March 23rd. Available from: https://www.pearsonclinical.ca/content/dam/school/global/clinical/canada/programs/bayley/19-02-Bayley-3-to-4-Comparison.pdf

None identified

Yes

Original Language: English for the USA

Bayley N. Aylward GP

Contact information
Pearson Assessment
19500 Bulverde Rd
San Antonio, TX 78259-3701
USA

Elizabeth Werner and Dr. Paul Williams from Pearson Research Services
E-mail: research.licensing@pearson.com

*With fees for academic/Non profit research
*With fees for commercial/pharmaceutical companies
*With the signature of a contract/agreement
*Other: Please contact Pearson Assessment, Inc.

Bayley Scales of Infant and Toddler Development, Fourth Edition © Pearson, 2019. All rights reserved.

Please contact Pearson Assessment, Inc

https://www.pearsonclinical.ca/store/caassessments/en/Store/Professional-Assessments/Developmental-Early-Childhood/Development/Bayley-Scales-of-Infant-and-Toddler-Development-%7C-Fourth-Edition/p/P100008220.html#:~:text=The%20Bayley%20Scales%20of%20Infant,Q%2DGlobal%C2%AE%20software%20system.

None identified