For this block the target is a . If you see the target press the Z key or click ‘Target present.’
If you do not see the target press the M key or click ‘Target not present.’
For this block the target is blue or an S. If you see the target press the Z key or click ‘Target present.’
If you do not see the target press the M key or click ‘Target not present.’
Press the space bar to begin this block of trials.