Looking especially for one to fit children age 7-18
Hello Daniela,
Here are some links.
https://www.psychologytoday.com/tests/career/concentration-focus-skills-test
http://www.nytimes.com/interactive/2010/06/07/technology/20100607-distraction-filtering-demo.html
http://www.businessballs.com/mental_concentration_test.pdf
http://www.bulletproofmusician.com/a-classic-test-of-focus-that-most-will-fail-in-the-first-10-seconds/
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