Two different examples representing two different dimensions to this:
(1) Say you're doing a minute long session and trying to catch auditory letter repeats that are supposed to occur around 5-8 times. On more fully featured N-Back progams you can reduce that number, so that only 1-2 repeats (say) occur. This can make it more difficult for some people because they hear too many false positives (if that makes any sense).
(2) You can change up the default parameters so that repeats are more finely staggered. For instance, take the following two strings:
AHJADCBWPORP (repeats are A and P)
AHPACPWBORJD (repeats are A and P)
The default setting for some programs will just create the first type of string, which can make it more predictable, and thus less mentally taxing. You can tune the parameters so that you get more strings like the second.
(1) Say you're doing a minute long session and trying to catch auditory letter repeats that are supposed to occur around 5-8 times. On more fully featured N-Back progams you can reduce that number, so that only 1-2 repeats (say) occur. This can make it more difficult for some people because they hear too many false positives (if that makes any sense).
(2) You can change up the default parameters so that repeats are more finely staggered. For instance, take the following two strings:
AHJADCBWPORP (repeats are A and P)
AHPACPWBORJD (repeats are A and P)
The default setting for some programs will just create the first type of string, which can make it more predictable, and thus less mentally taxing. You can tune the parameters so that you get more strings like the second.