Author: L. Thurstone (1944)
The leftmost image in each row is the target figure.
For each of the four figures on the right, decide whether it contains the target figure.
Click button 1, 2, 3, or 4 if the corresponding figure contains the target.
The target figure must appear in the same size and orientation – it should not be rotated.
You have 10 minutes to complete the test.
Desktop is recommended. On a mobile screen, the figures will be too small.