Ensure you are in a quiet room and have disabled all notifications on your device. Even a momentary lapse in concentration can lead to errors on high-level logic problems.
Do not spend an armchair amount of time on a single difficult question. Most tests are designed so that questions increase in difficulty; if you get stuck early, you may run out of time for questions you could have easily solved later.
Because IQ tests are and require intense mental endurance , your physical and digital surroundings significantly impact your score.
