Table 1.

The average of all subjects' highest performances (the shortest interstimulus interval (ISI) of the tasks in which subjects achieved a certain level of performance in that block and shortened ISI in the following block) in multitasking (MT)‐trained tasks among the first and last three training sessions

	First three sessions (ms)	Last three sessions (ms)
Auditory–auditory dual task	1621 ± 70	857 ± 34
Auditory–visual dual task	970 ± 36	592 ± 17
Auditory–auditory–auditory triple task	3496 ± 206	1117 ± 55
Auditory–auditory–visual arithmetic triple task	2171 ± 76	985 ± 36
Auditory‐auditory–auditory–auditory quad task	6116 ± 357	1990 ± 193
Auditory–auditory–visual arithmetic–visuospatial quad task	2640 ± 121	1213 ± 52

Data obtained from two subjects who could not achieve a certain level of performance in an auditory–auditory–auditory–auditory quad task during the first three sessions were removed from the calculation of the average in this task.