You and your partner will use a special program to each record 100 reaction time measurements according to the instructions below. To run the reaction time program you must:

1.  Open the MacPlus emulation. A new window will open.

• Select EJECT DISC.
• Double Click on MouseRT Apl.

You will see: "Enter the number of Reaction Time measurements to be made-"

If it does not appear, ask your lab instructor for help.

2.  To test the program, enter 3 for the number of measurements and hit RETURN. A list of instructions will appear on the screen. Read them carefully before striking any key!!

3.  Hit any key now. The screen will go blank for a random period of time. Watch in the upper left corner of the window for the word STOP to appear. As soon as it appears, click with the mouse. The word should disappear again for a random period of time before reappearing. It will continue to reappear until you complete the number of Reaction Time measurements you entered in step 2.
 

Figure 1-3: Example of MouseRT Final Window

4.  A new screen will appear with the listing of your reaction times, , s, and s_m like the one shown above.

The data program will end and close the window when you touch any key. You will have to record the values in the Worksheet when you make your run of 100 reaction time tests, so do not touch the keyboard until you have looked at it and recorded the data on the Worksheet! These values are in machine units (mu). Each mu is approximately 1/100 of a second.

5.  To record the data, open the GRAB application from the dock.

• Under the CAPTURE menu, select WINDOW.

• Click the Choose Window button.

• Click anywhere inside the Mini v Mac window to select it.

• Under the FILE menu, select PRINT to get a hard copy.

• Go back to the Mini v Mac window and select it with the mouse.

• Hit any key to end the data taking procedure.

• To close the Mini v Mac window, under its SPECIAL menu, select SHUT DOWN. You can then dismiss the window with the red button.

6.  Open the Worksheet and fill in the header information, including partners' names, lab instructor and the date.

7.  Follow steps 1 through 5, but at step 2, enter 100 for the number of Reaction Time measurements. Be sure to record them on the Worksheet before hitting a key at the end! Each partner should record his/her own reaction time as a separate run of 100 points in spreadsheet cells B13:F32 and B43:F62, respectively.

8.  For each partner, from the MouseRT display, record: average reaction time, standard deviation, and standard deviation of the mean on the Worksheet in cells F34:F38 and F64:F68, respectively.