For example, a study found that just taking a common nonverbal reasoning test twice increases scores by roughly the ...

Psychologists Alfred Binet and Theodore Simon created the IQ test. In 1904, Binet administered the test for the first time in France. The purpose was to identify children who were most likely to ...

The above image has been shared as a picture puzzle for children and adults ... This optical illusion image is just another fun way to test your IQ. However, taking an actual IQ test is a good ...