* The specific CRT test used: Different tests have different scoring methods, difficulty levels, and time limits. There's no standard, globally used CRT (Cognitive Reflection Test) that produces a universally comparable score.
* The population tested: The average score will vary depending on the age, education level, and cognitive abilities of the group taking the test. A sample of university students will likely score higher than a random sample of the general population.
* The context of the testing: Whether the test is administered under timed conditions, with distractions, or as part of a larger assessment will influence performance.
Therefore, you won't find a single number representing the "average CRT keystroke score." Instead, researchers typically report the average score *within their specific study* alongside details of their methodology and participant demographics. You would need to look at the results of individual studies to find the average scores for those particular samples.