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Related Experiment Videos

Instrumental and test-retest reliability of saccadic measures.

Christoph Klein1, Burkhart Fischer

  • 1School of Psychology, University of Wales, The Brigantia Building, Penrallt Road, Bangor, Gwynedd LL57 2AS, Wales, UK. c.klein@bangor.ac.uk

Biological Psychology
|December 29, 2004
PubMed
Summary

Reliability of saccade control measures from pro- and anti-saccade tasks is good to excellent across the lifespan. However, test-retest stability is only moderate in children and adolescents.

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Area of Science:

  • Neuroscience
  • Psychology
  • Ophthalmology

Background:

  • Saccade control is crucial for visual processing.
  • Reliability of saccade measures is not well-established.
  • Pro- and anti-saccade tasks are common methods to assess saccade control.

Purpose of the Study:

  • To determine the reliability of various saccade control measures.
  • To assess the generalizability of these measures across the lifespan.
  • To evaluate the test-retest stability of saccade measures in younger populations.

Main Methods:

  • Two studies involving 446 healthy participants aged 6-88 years.
  • Analysis of saccade control using pro- and anti-saccade tasks under varied stimulation and trial block conditions.
  • Calculation of odd-even, split-half, and 19-month test-retest correlations.

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Main Results:

  • Odd-even and split-half correlations in Study 1 (N=327, ages 9-88) were good to excellent (r=.60–.97) for most measures, showing lifespan generalizability.
  • 19-month test-retest correlations in Study 2 (N=117, ages 6-18), after age control, ranged from .43 to .66.
  • Results indicate moderate temporal stability of individual differences in saccade control during childhood and adolescence.

Conclusions:

  • Saccade control measures derived from pro- and anti-saccade tasks exhibit high reliability for concurrent validity studies across all ages.
  • These measures demonstrate moderate test-retest stability in children and adolescents, limiting their predictive validity in these age groups.