Don't know how to install older version of PsychoPy

[Michael]

You could just download the latest version of PsychoPy apply the “Use Version” setting to specify that the experiment should be run using code current for the given version. In Builder, this is contained in the experiment settings dialog. When running in Coder, you ned to explicitly call the useVersion() function, as discussed here:

Installing older version with only source code available on github

Hi Joyce, have you considered running the latest version of PsychoPy but using the psychopy.useVersion() function so that the experiment itself is executed under the specified earlier version? e.g. Explaining a bit of how it works: https://groups.google.com/forum/#!topic/psychopy-dev/yqjT14HD46Q It can also now I think be used for Builder experiments: just select the version to use in the experiment settings dialog. I’ve never used this myself. It would be great if you could give feedback…