I have created a data set with 25 people each observing 50 trials in 2 conditions. It's from a priming experiment. It looks about like real data. Here is the download.
The three columns are:
- id (participant: 1...25)
- cond (condition: 1,2)
- rt (response time in seconds).
There are a total of 2500 rows.
I think it will take you just a few moments to load it and tabulate your effect size for the condition effect. Have fun. Write your answer in a comment or write me an email.
I'll provide the correct answer in a blog next week.
HINT: If you wish to get rid of the skew and stabilize the variances, try the transform y=log(rt-.3)