This chapter uses three assessment items, or tasks, to illustrate how process data recorded by computer-based assessments enhance the ability to measure students’ behaviour and skills.

In computer-based tests, machines keep track (in log files) of – and, if so instructed, could analyse – all the steps and actions students take in finding a solution to a given problem. This chapter uses three tasks from the PISA 2012 computer-based reading assessment to illustrate how process data recorded by the assessment can enhance educators’ ability to monitor students’ test-taking behaviour and measure their skills.