TRR performs test-rest reliability analysis for behavior data as well as region-based neuroimaging data. If no multiple trials are involved in a dataset, use the conventional intraclass correlation (ICC) with, for example, 3dICC for neuroimaging data. However, when there are multiple trials for each condition, the traditional intraclass correlation may underestimate the reliability to various extent. For more details, check out the help of the program and the following manuscript:

[www.biorxiv.org]

P.S.- 3dLMEr could be utilized with the option -TRR to estimate test-retest reliability with trial-level data for whole-brain analysis; however, it may only work for data with situations such as a single effect (e.g., one condition or average across conditions). In other words, 3dLMEr -TRR could fail for contrasts.

Gang