A T appears very briefly; afterwards choose which way its crossbar pointed
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This task is new to Classperiment and has not yet been fully tested. Issues may occur in the procedure or scoring. The expected effect may also fail to appear reliably.
Task time: 3–5 min
Look at the dot in the middle. A T will appear briefly. Remember which way its crossbar points. Lines may appear afterwards. Then choose the matching T. Decide even if you are unsure.
Four answer fields show the T in its four directions: 1 up, 2 right, 3 down, 4 left. Press the digit or tap the field; you have up to 2 seconds, and the first choice counts.
First you practise 8 times with feedback. In a classroom session, the explanation and results appear after the instructor releases them.
8 practice trials, then 64 trials in 2 blocks