Intervention(s)
We administer a math test online, where subjects attempt to solve 30 randomly-sample questions from 3 standardized tests of various difficulty levels (4th grade, 8th grade, and High school). These tests belong to the TIMSS family of tests, which are administered every four years in several countries. We are restricting our attention to multiple-choice questions, which represent the large majority of available questions and are more directly comparable between them. The size of the question pool will be around 420.