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Optimizing the rapid measurement of detection thresholds in infants

Jones, P.R.; Kalwarowsky, S.; Braddick, O.; Atkinson, J.; Nardini, M.


P.R. Jones

S. Kalwarowsky

O. Braddick

J. Atkinson


Accurate measures of perceptual threshold are difficult to obtain in infants. In a clinical context, the challenges are particularly acute because the methods must yield meaningful results quickly and within a single individual. The present work considers how best to maximize speed, accuracy, and reliability when testing infants behaviorally and suggests some simple principles for improving test efficiency. Monte Carlo simulations, together with empirical (visual acuity) data from 65 infants, are used to demonstrate how psychophysical methods developed with adults can produce misleading results when applied to infants. The statistical properties of an effective clinical infant test are characterized, and based on these, it is shown that (a) a reduced (false-positive) guessing rate can greatly increase test efficiency, (b) the ideal threshold to target is often below 50% correct, and (c) simply taking the max correct response can often provide the best measure of an infant's perceptual sensitivity.


Jones, P., Kalwarowsky, S., Braddick, O., Atkinson, J., & Nardini, M. (2015). Optimizing the rapid measurement of detection thresholds in infants. Journal of Vision, 15(11), 1-17.

Journal Article Type Article
Acceptance Date Jun 8, 2015
Online Publication Date Aug 3, 2015
Publication Date Aug 3, 2015
Deposit Date Jun 8, 2015
Journal Journal of Vision
Publisher Association for Research in Vision and Ophthalmology
Peer Reviewed Peer Reviewed
Volume 15
Issue 11
Article Number 2
Pages 1-17