The task consists of converting letters into numbers for 90 seconds. The letters are fixed but the corresponding number to the letters are randomly generated. Subjects are asked to convert a randomly selected letter in to the corresponding number and enter the number in the box on the screen and press next. As soon as subjects press next a new table and a new letter is generated. With this code subjects observe the number of correct answers they provide, on the same page.

The task consists of converting letters into numbers for 90 seconds. Subjects are presented with a table with randomly generated letters and randomly generated numbers. Subjects are asked to convert a randomly selected letter in to the corresponding number and enter the number in the box on the screen and press next. As soon as subjects press next a new table and a new letter is generated. With this code subjects observe the number of correct answers they provide, on the same page.

Subjects are given 90 seconds to calculate the sum of four randomly chosen two-digit numbers. Once subjects type their response in the corresponding box they need to press next. As soon as they submit their answer, a new set of two-digit numbers will be provided. With this code subjects observe the number of correct answers they provide, on the same page.