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help > RE: Network Based Statistics
Jul 20, 2017 02:07 AM | Alfonso Nieto-Castanon - Boston University
RE: Network Based Statistics
Dear Ekaterina,
NBS statistics are appropriate for F-contrasts as well. Both of the contrast specifications ([1 -1;-1 1] or [1 -1]) will work exactly in the same way (assuming that you are specifying "two-sided" effects for the T-contrast if you are using the latter)
Best
Alfonso
Originally posted by Ekaterina Pechenkova:
NBS statistics are appropriate for F-contrasts as well. Both of the contrast specifications ([1 -1;-1 1] or [1 -1]) will work exactly in the same way (assuming that you are specifying "two-sided" effects for the T-contrast if you are using the latter)
Best
Alfonso
Originally posted by Ekaterina Pechenkova:
Dear All,
a follow-up question re NBS: do I understand it correct that the NBS statistics are only appropriate for testing T-contrasts, but not F-contrasts?
I.e. if I have two groups and two conditions and want to look at the 2x2 interaction at the network level, can I test contrast [1 -1; -1 1] (subject effects) with [1 -1; -1 1] (condition effects), or should I rather specify a contrast like [1 -1] (subjects effects) [1 -1] (condition effects)?
Best,
Ekaterina.
a follow-up question re NBS: do I understand it correct that the NBS statistics are only appropriate for testing T-contrasts, but not F-contrasts?
I.e. if I have two groups and two conditions and want to look at the 2x2 interaction at the network level, can I test contrast [1 -1; -1 1] (subject effects) with [1 -1; -1 1] (condition effects), or should I rather specify a contrast like [1 -1] (subjects effects) [1 -1] (condition effects)?
Best,
Ekaterina.
Threaded View
| Title | Author | Date |
|---|---|---|
| Rob McCutcheon | Jul 7, 2017 | |
| Ekaterina Pechenkova | Jul 11, 2017 | |
| Alfonso Nieto-Castanon | Jul 20, 2017 | |
| Ekaterina Pechenkova | Sep 12, 2017 | |
| Jeff Browndyke | Jul 7, 2017 | |