Table 1.

BOCA subscales, example questions, and scoring

Subscale	Subscale description	Max. Score
1. Memory / Immediate Recall	The names of 5 animals are announced verbally. After a short pause, 16 buttons are displayed indicating the names of the 5 announced animals and 11 other random animals. The participant is expected to select the 5 announced animals. This subscale includes three attempts scored as follows: all five animals selected correctly on the 1st attempt: 2 points; all five animals selected correctly on the 2nd attempt: 1 point; otherwise, zero point.	2
2. Language / Prefrontal Synthesis	Questions are announced verbally and the participant is expected to select the answer by pressing a picture on the screen.
	Training: Integration of one modifier. E.g., ‘select the blue square,’ ‘select the green triangle.’	0
	Level 1: Integration of one modifier. E.g., ‘select the blue square,’ ‘select the green triangle.’	1
	Level 2: Integration of two modifiers. E.g., ‘select the large blue square,’ ‘select the small green triangle.’	1
	Level 3: Spatial prepositions on top of and under. E.g., ‘select the square on top of the circle,’ ‘select the circle under the triangle.’	1
	Level 4: Two objects integration. E.g., ‘If the tiger was eaten by the lion, who is still alive?’; ‘If the boy was overtaken by the girl, who won?’	1
	Level 5: Three objects integration. E.g., ‘The girl is taller than the boy. The monkey is taller than the girl. Who is the shortest?’	1
3. Visuospatial Reasoning / Mental rotation	The participant is expected to select the object, that, when rotated, is identical to the object on top.
	Training: easy	0
	Level 1: easy	1
	Level 2: moderate	1
	Level 3: challenging	1
4. Executive function / Clock test	The participant is expected to calculate the time difference between the two clocks.
	Training: easy	0
	Level 1: easy	2
	Level 2: moderate	1
	Level 3: challenging	1
5. Attention	The participant is instructed to click the announced digits in forward and backward order.
	Training: Click the 4 digits in the order that you hear them	0
	Level 1: Click the 4 digits in the order that you hear them	1
	Level 2: Click the 5 digits in the order that you hear them	1
	Level 3: Click the 3 digits in the backward order	1
	Level 4: Click the 4 digits in the backward order	1
6. Mental math	The participant performs mental math by adding or subtracting two numbers.
	Training: Single-digit number addition. E.g., 7 + 6 =?	0
	Level 1: Single-digit number addition. E.g., 7 + 6 =?	1
	Level 2: One-digit number plus two-digit number. E.g., 7 + 16 =?	1
	Level 3: Two-digit number plus two-digit number. E.g., 17 + 16 =?	1
	Level 4: Two-digit number minus two-digit number. E.g., 37–16 =?	1
7. Orientation	The participant is expected to select today’s month, year, and day of the week.
	Level 1: What month is it today?	1
	Level 2: What year is it today?	1
	Level 3: What day of the week is it today?	1
8. Memory / Delayed Recall	The participant is expected to select the five animals named at the beginning of the test. The score equals to the number of correctly named animals.	5
Total maximum score		30

Note. This table is reproduced from Gold et al. (2021) [18]