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Developmental effects on odor learning and memory in children

C Jehl1, C Murphy

  • 1Center for Lifespan Human Senses, San Diego State University, California 92120-4913, USA. cjehl@sunstroke.sdsu.edu

Annals of the New York Academy of Sciences
|February 4, 1999
PubMed
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The child version of the California Odor Learning Test (COLT) effectively differentiates cognitive development in children. This odor learning test shows potential for assessing cognitive functioning and detecting developmental differences in memory and recall abilities.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Cognitive Science

Background:

  • The California Odor Learning Test (COLT) was developed to assess cognitive functions in children.
  • Its design assumes cognitive measures can indicate brain damage severity by comparing healthy and clinical groups.
  • Verbal odor recall, recognition, and identification tasks were chosen for their suitability in evaluating cognitive abilities.

Purpose of the Study:

  • To evaluate the COLT's capacity for identifying developmental variations in children's odor learning and memory.
  • To assess the test's reliability and validity in a healthy pediatric population.

Main Methods:

  • Fifty-one healthy children, aged 7-10 and 11-15 years, were administered the COLT twice, one week apart.
  • The test involved learning and recalling 22 common odors across two sessions, including free recall, cued recall, recognition, and identification tasks.

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  • Analyses of variance (ANOVAs) were used to compare performance between age groups and assess learning effects.

    • Main Results:

    • Significant differences were observed between age groups in odor recall, recognition, and identification accuracy.
    • The younger group (7-10 years) showed lower performance compared to the older group (11-15 years).
    • Both age groups demonstrated a learning effect, and a gender difference was noted in odor free recall at retest.

    Conclusions:

    • The child version of the California Odor Learning Test (COLT) demonstrates potential as a valuable tool for assessing cognitive functioning in children.
    • The test successfully detected developmental differences in odor learning and memory between age groups.
    • Further research may explore its utility in clinical populations for diagnosing cognitive impairments.