Dear experts:
In examining QDEC results of a contrast of interest, I
noticed the results are mainly in cold color (blue), with only two small
clusters in warm color (red). When I proceeded with Monte Carlo simulation, if
I chose the abs as the sign option in simulation, then no clusters survived. In
contrast, some clusters would remain, if I chose the neg sign. Because the
uncorrected results were mainly in cold color, it seems reasonable to me to use
negative only in the simulation. But I am wondering how the option of
abs/neg/pos
leads to the disparities and will you please elaborate how the simulation works
based on abs/neg/pos.
Thank you in advance.
Karl
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