Hi,
I am struggling for help.
All I know is - it's within subjects because all of the participants judged these four stimuli and I have a mean percentage correct response for all the participants to all the stimuli. In a paper I read which did a similar study their output looked like chi squared. But I am not sure if this is the right test?

For reaction time data on the same experiment I used a one-way within subjects anova...

is this right and what test should I use for the correct responses data? I want to know if one stimuli was easier to get right than another?

Help much appreciated....