Bayley Scale of Infant Development
All information from previous blog post is current except the price has increased to $1,350 for the comprehensive kit.
Article Summary:
Cirelli I, Bickle graz M, Tolsa JF. Comparison of Griffiths-II and Bayley-II tests for the developmental assessment of high-risk infants. Infant Behav Dev. 2015;41:17-25.
The purpose of this article was to compare two clinically used developmental test to determine the validity and interchangeability of the Bayley-II and the Griffiths-II. The article states that the Bayley-II is often used more for research in the United States where as the Griffiths-II test is used more in Britain. The Griffiths-II has five subcategories where the Bayley-II has two. They both look at mental and psychomotor but the Griffiths-II looks at more specific subscales and then calculates one score. The Bayley-II gives a score for psychomotor development and mental development. Both are typically administered at 18 months for developmental delays. The article used the same pediatrician to administer both test to sixty-one high-risk infants. This data was then retrospectively analyzed using paired t-test, Pearson correlations and receiver operating characteristics curves. The results of this study found that both are acceptable measures but scores were only interchangeable for the Bayley-II mental developmental index and the Griffiths-II global development quotient. There was no significant difference between these two. The Griffiths-II locomotor scores were significantly higher than the Bayley psychomotor developmental index (p<0.01). Neither test is able to predict future learning difficulties or cognitive impairments. Both tests still produce meaningful results but overall the article found score to be higher on the Griffiths-II. The strength of this study is comparing standards from different countries to help identify an international test for high-risk infants. This article had a medium size sample and kept the rater the same. Some limitations of this study are the fact that is it retrospective and limited to one pediatrician. It would be interesting to compare data from the Bayley-II and the Griffiths-II from different geographical regions other than the United States and Britain. Overall, the article concludes that both studies are feasible for developmental testing however, there is not enough validity between scores for the test scores to be interchangeable.
One response to “Bayley Scale of Infant Development”
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This test was one of the few outcome measures that was used by the hospital for my peds acute care rotation. I did not get to observe this test being given as only one PT was certified to give the test and she was not my CI. I know that the test was not often used because of the length of the test. I also know that the PT at the hospital was using the results of the test for her patients for a research study. I think that it sounds like a good test to at least begin the screening process for developmental delays to help get each child the help that they need and deserve as early as possible.