I have data from 6 different "cohorts" that I would like to analysis
in one big group analysis.
I have two age groups (yng and old). The yng data are from 4 separate
studies and the old are from 2 separate studies.
The data were collected in "chunks" over a couple of years. So 20
young here, then another 20 young the following year etc. Although,
the training and task were the same I want to account for the fact
that the data were not collected continuously.
My interest is in age differences and want to make sure that I account
for any "cohort" effects so I can correctly interpret any age group
Based on box-plots of the behavioral data there is evidence of cohort effects.
Thank you for any guidance,
Jason Steffener, Ph.D.
Department of Neurology