Examples of reasoning tasks that are frequently used in conflict detection studies
Working memory tests
Some adaptations of the classic Operation Span test. You can find more information about the adaptations in the 2002 paper “A Dutch, computerized, and group administrable adaptation of the operation span test” (see publications page). These are Dutch versions but they will give you an idea of what the tests look like. The source code is included but keep in mind that I'm programming in Turbo Pascal (… pretty old school, I know, but it does the trick …). Anyway, these programs are so basic you will have written your own version in no time. Unzip the files and check out the readme.txt files for further instructions.
Dutch version of Randy Engle’s Operation Span test click here
Gospan - Group administrable version of the Operation Span click here