Table 1.

Content of GMT sessions for both treatment arms

Session	Contents
1	Providing information about training;
	Providing information about cognitive functioning after acquired brain injury in general with an emphasis on executive impairments;
	Increasing awareness of individual executive dysfunction;
	Preparing the setting of two individual treatment goals
2	Setting two individual chosen treatment goals (i)ADL tasks);
	Filling out the Goal Attainment Scale forms for each treatment goal
	GMT-errorless learning	Conventional GMT-treatment
3	Defining steps concerning treatment goal 1 using cue cards and other errorless learning techniques	General information about GMT and the GMT algorithm
4	Defining steps concerning treatment goal 2 using cue cards and other errorless learning techniques	Filling out GMT scheme by participant concerning treatment goal 1
5	Performance of the steps concerning treatment goal 1 using errorless learning techniques	Filling out GMT scheme by participant concerning treatment goal 2
6	Performance of the steps concerning treatment goal 2 using errorless learning techniques	Performance of treatment goal 1 according to the GMT algorithm
7	Integrating the steps of treatment goal 1 into the GMT algorithm using errorless learning techniques;	Performance of treatment goal 2 according to the GMT algorithm
	Performance of treatment goal 1 according to the GMT algorithm using errorless learning techniques
8	Integrating the steps of treatment goal 2 into the GMT algorithm using errorless learning techniques;	Improvement of GMT schemes concerning one or both of the treatment goals and/or practicing performance of one or both of the treatment goals
	Performance of treatment goal 2 according to the GMT algorithm using errorless learning techniques

Note. Sessions 1 and 2 are the same for both conditions.