BOCA Domains

BOCA evaluates eight cognitive domains: 1) Memory/Immediate Recall, 2) Language Comprehension/Prefrontal Synthesis, 3) Visuospatial Reasoning / Mental rotation, 4) Executive function / Clock Test, 5) Attention, 6) Mental math, 7) Orientation, and 8) Memory/Delayed Recall. BOCA uses randomly-selected not-repeating tasks to minimize practice effects. The maximum total score is 30. Higher score indicates better cognitive performance.

1. Memory / Immediate Recall (Max. Score = 2)

The names of 5 animals are announced verbally. After a short pause, 10 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 subtest 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 points.

2. Language / Prefrontal Synthesis (Max. Score = 5)

Questions are announced verbally and the participant is expected to select the answer by pressing a picture on the screen.

3. Visuospatial Reasoning / Mental rotation (Max. Score = 3)

The participant is expected to select the object, that, when rotated, is identical to the object on top.

4. Executive function / Clock test (Max. Score = 4)

The participant is expected to calculate the time difference between the two clocks.

5. Attention (Max. Score = 4)

The participant is instructed to click the announced digits in forward and backward order.

6. Mental math (Max. Score = 4)

The participant performs mental math by adding or subtracting two numbers.

7. Orientation (Max. Score = 3)

The participant is expected to select today’s month, year, and day of the week.

8. Memory / Delayed Recall (Max. Score = 5)

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.

Total maximum score = 30