It seems that the browser you are using does not support current JavaScript methods (ES6, standard since 2015),
or maybe JavaScript is disabled altogether. Please use an up-to-date version of a modern browser (preferably
Google Chrome) and/or
enable JavaScript.
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Note: this is a demo version of the test with the following
differences:
• There are less trials.
• None of the questions are obligatory in order to proceed to the next page (and
there is no alert if questions are not answered).
• No fullscreen is initiated automatically.
• The minimum break between two blocks is only 5 seconds (instead of 30).
• No data is saved on the server.
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