A comparison of analysis of variance and correlation methods for investigating cognitive development with functional magnetic resonance imaging

Dev Neuropsychol. 2006;30(1):531-46. doi: 10.1207/s15326942dn3001_2.

Abstract

Statistical approaches used in functional magnetic resonance imaging (fMRI) to study cognitive development are varied and evolving. Two approaches have generally been used. These are between-group end-point analysis of variance (ANOVA) and age-related regression. Differences in these 2 approaches could produce different results when applied to a single data set. Event-related fMRI data from a group of typically developing participants (n = 95; age range = 7-35 years) performing controlled lexical processing tasks were analyzed using both methods. Results from the 2 approaches showed significant overlap, but also noteworthy differences. The results suggest that for regions showing age-related changes, correlation was relatively more sensitive to more linear changes whereas ANOVA was relatively more sensitive to less-linear changes. These findings suggest that full characterization of developmental dynamics will require converging methodologies.

Publication types

  • Comparative Study
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aging / physiology*
  • Analysis of Variance
  • Brain / blood supply*
  • Brain / growth & development
  • Brain / physiology
  • Brain Mapping*
  • Child
  • Cognition / physiology*
  • Functional Laterality / physiology
  • Humans
  • Image Processing, Computer-Assisted / methods
  • Linear Models
  • Magnetic Resonance Imaging*
  • Oxygen / blood

Substances

  • Oxygen