37  Lab 8 exercise

37.1 Main exercise

Run the choice reaction time task from Lab 6. Upon completing the experiment:

  • Go to the data folder.
  • Open the .csv file using Excel.
  • Save the .csv file as an .xlsx file.
    • Go to “File” and “Save As…”.
    • Choose “Excel Workbook (.xlsx)” as file format.
macOS users

If you’re using macOS, by default .csv files will be opened with Numbers. To change this, right-click on a .csv file, then click on “Get Info” and then on “Open with”. Now, choose Excel from the the dropdown menu and make sure to also click on “Change all”.

Find the following columns in your output file:

  • The response times from your choice RT trials.
  • The accuracies from your choice RT trials.

When you have found them, answer the following questions:

  • What was your fastest RT?
  • What was your slowest RT?
  • How many incorrect responses did you make?

37.2 Challenge exercise

Add 10 practice trials in your experiment, run the task again and observe how the new output file has changed as a result of adding the practice trials.