The serious computer game CCRacer 2.0 includes tasks to measure different executive functions. In the master thesis, we developed a new task to measure planning, a process used to identify and organise the steps to achieve a goal. The task consists of problems in which a participant has to mark the path of a car by picking up and dropping off packages on the road according to certain rules, while trying to take the shortest route. The aim of the master's research was to check the validity of the task and the reliability of the test score. A total of 97 participants took part in the remote testing and, in addition to the CCRacer – planning test, four cognitive tests were administered. Two of the planning tests (Tower of London and the Traveling salesman problem) were used to test convergent validity, while the visuospatial working memory test (Corsi block-tapping test) and the processing speed test (Letter-digit span) were used to test the discriminant validity of the CCRacer – planning test. Speed and performance data was collected when solving the tests. In addition to tests, participants completed a questionnaire with demographic data, self-report scales on the interestingness of each planning test and the motivation to solve them, questions on how they solved the tasks and on impulsive behaviour. The test-retest reliability of the new task was assessed by performing a second measurement, attended by 39 participants from the first testing. Moderately high correlations between the planning tests and low correlations with tests of other cognitive functions indicated that the new task in the CCRacer setting measures planning ability. The study provided encouraging results for the use of the new task, which, with some modifications and testing on different age groups, could become a suitable tool for measuring planning ability. Participants rated the new task as more interesting and motivating than traditional planning tests, which is promising for future development of the task for cognitive training purposes.
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