Press ESC to quit the experiment, data will be lost
Press SPACEBAR to continue
Try the test experiment: Enter your name and click on Start. Calibration will start first.
Load your experiment: Upload an experiment file to load experiment configuration.
Enter your name and click on Start. Calibration will start first.
By clicking on Start you accept the experiment conditions and consent form (if given).
You finished all the trials, your data has been uploaded!
Thanks for participating, click here to go back.
Measure your screen in cm or inches.
Do not measure the screen border, only the interior of the display.
Place a credit card in the top left corner of the square.
Adjust the slider to match the size of your credit card in the screen.
Li, Q., Joo, S.J., Yeatman, J.D. et al. Controlling for Participants' Viewing Distance in Large-Scale, Psychophysical Online Experiments Using a Virtual Chinrest. Sci Rep 10, 904 (2020). doi:10.1038/s41598-019-57204-1
Introduce the Google Drive Folder ID: