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I'm working on reaction time data. I want to fit the data with an ex-wald model but I only found one paper which interpreted the fitting with S. But I don't know S. Are there any ways to fit the RT data with R, python or Matlab?

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  • $\begingroup$ You might get better answers in stuck overflow. someone would certainly migrate the question to there. $\endgroup$ – Erdem May 19 '18 at 15:04
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This seems promising. I haven't used it

Heathcote, A. (2004). Fitting Wald and ex-Wald distributions to response time data: An example using functions for the S-PLUS package. Behavior Research Methods, Instruments, & Computers, 36(4), 678-694. http://www.tascl.org/uploads/4/9/3/3/49339445/26_.pdf

It does include s-plus code in a supplement to the journal article: https://link.springer.com/article/10.3758%2FBF03206550

Often S-plus can be used in R, sometimes with some adjustments.

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