In Reply to Parent Post by Bev D
Additionally I will reiterate as Steve did that paired t tests and linear regression are NOT the appropriate statistical tools for measurement studies such as yours. The Intraclass correlation coefficient is the appropriate statistic...a simple google search for this will help.
From SPSS, there are different parameters
(Two-Way Mixed when people effects are random and the item effects are fixed, select Two-Way Random when people effects and the item effects are random, or select One-Way Random when people effects are random.)
However, the so-called "people effects", "fixed", "random" look unclear to me. Furthermore, should only one set of data is to be supplied or both sets?