Related Experiment Video
Updated: Jul 14, 2026

Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
Published on: January 20, 2022
Comparability of the GMI and DMI for the WMS-III
Joseph J Ryan1, Laura A Glass, Jared M Bartels
1Department of Psychology, University of Central Missouri, Warrensburg, Missouri 64093, USA. ryan@ucmo.edu
Abstract:
This study compared the new Delayed Memory (DMI) with the General Memory (GMI) index of the WMS-III using 134 inpatients with substance abuse disorders. The WMS-III Immediate Memory Index (IMI) and the GMI are not parallel because the latter includes Auditory Recognition Delayed. A solution to this dilemma is the DMI, in that it directly parallels the original IMI. The GMI and DMI scores were highly correlated, r = .98, and mean values differed by<1 point (90.77 and 90.66, respectively). Difference score comparisons (i.e., IMI-GMI with IMI-DMI and FSIQ-GMI with FSIQ-DMI) yielded similar results (ts<1). Case-by-case analyses demonstrated concordance rates of 99% for the IMI-GMI and IMI-DMI comparisons and 94% for the FSIQ-GMI and FSIQ-DMI contrasts.
Related Concept Videos
Kendall's Coefficient of Concordance
Multiple Comparison Tests
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
