778 reputation
48
bio website
location Halifax, Canada
age 32
visits member for 2 years, 11 months
seen Dec 9 '13 at 3:06

Cognitive scientist, statistician, programmer, tinkerer


Sep
27
awarded  Autobiographer
Jan
18
awarded  Yearling
Apr
4
revised Intelligence and marriage satisfaction
added 167 characters in body
Apr
4
answered Intelligence and marriage satisfaction
Apr
2
awarded  Nice Answer
Jan
18
awarded  Yearling
May
11
answered The current recommended text for statistics in behavioural sciences
Apr
27
awarded  Enlightened
Apr
27
awarded  Nice Answer
Mar
30
comment How to analyze reaction times and accuracy together?
Looking at the pros/cons to using a binomial mixed effects model of accuracy as a function of RT and other predictors is one of the projects I had planned before this discussion for our summer stats student, though I'm thinking of looking at both linear and generalized additive models of the effect of RT.
Mar
30
comment How to analyze reaction times and accuracy together?
IE has become lamentably standard in some fields partly, I suspect, because it feels somewhat intuitive and is certainly an easy "solution" to the vexing problem of combining speed and accuracy. Admittedly, I don't have data explicitly demonstrating the invalidity of the speed-accuracy scaling assumed by IE (though I now think I'll task a student to generate this data through simulations this summer), but it would seem rather remarkable if the simple IE scaling, which at least rather questionably models accuracy as a proportion (see Dixon, 2008, "Models of accuracy..."), comes out as valid.
Mar
30
comment How to analyze reaction times and accuracy together?
Unfortunately inverse efficiency assumes a particular scaling of RT and error rate that is completely unsupported. Even Dr. John Christie, a colleague of mine that gave IE its name, has since come to completely oppose its use.
Mar
30
comment How to analyze reaction times and accuracy together?
These days I prefer LBA because it's computationally simple/faster to fit and because I haven't seen any demonstrations of cases where diffusion can fit data that LBA can't
Mar
29
answered How to analyze reaction times and accuracy together?
Mar
16
awarded  Enlightened
Mar
16
awarded  Nice Answer
Mar
11
comment How can I create computer based psychology experiments using OS X?
@ArtemKaznatcheev I haven't empirically tested things myself, but I've been told by sources I trust that web-based RT collection isn't reliable. However, it's easy enough to take a python script and create a stand-alone app (or exe) using py2app (or py2exe) that your participants can download.
Mar
3
answered Can response time be incorporated into signal detection theory?
Feb
28
awarded  Commentator
Feb
28
comment How can I create computer based psychology experiments using OS X?
Yet another addendum: the code I linked is very much written in a procedural style rather than an OOP style. This is because I find OOP unnecessary for the simple stuff I tend to do and find it takes a little more effort (both coding and planning) to do fully OOP experiments. Possibly just a personal quirk though.