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Bug 412 - correcttail option in montecarlo has incorrect default

Reported 2011-01-18 15:16:00 +0100
Modified 2011-07-13 14:46:36 +0200
Product: FieldTrip
Component: core
Version: unspecified
Hardware: PC
Operating System: Mac OS
Importance: P1 normal
Assigned to: Saskia Haegens
Depends on:
See also:

Robert Oostenveld - 2011-01-18 15:16:39 +0100

at the moment the correcttail option has the default 'no', which means that the prob and mask are incorrect if the user specifies a alpha of 0.05. This was just found out based on the eventrelatedstatistics tutorial. I added the option cfg.correcttail = 'prob' to the eventrelatedstatistics totorial.

Saskia Haegens - 2011-01-19 14:51:18 +0100

actually, cfg.correcttail = no & cfg.tail = 0 & cfg.alpha = 0.05 (all defaults) leads to a warning

Roemer van der Meij - 2011-01-20 10:15:37 +0100

Didn't we decide to do a year a go to do it like this? Provide a warning for those who were unaware of the issue of the different conventions and corrections, but to let the defaults be as close to how they were for a very long time? As p-values can be a sensitive issue. I thought this was the reason why by default the p-values or the alpha are not corrected, as they never were so in the past.

Jan-Mathijs Schoffelen - 2011-03-01 10:44:25 +0100

perhaps we should discuss this in the FT-meeting

Saskia Haegens - 2011-06-23 18:14:34 +0200

additional documentation is now available here: i will leave the default as is (cfg.correcttail = 'no', warning when using this in combination with tail = 0 and alpha = 0.05)

Robert Oostenveld - 2011-07-13 14:46:36 +0200

changed the status for a whole bunch of resolved bugs to CLOSED