Table 6.

Issues causing verbal recognition problems by the system (Digit Span Backward task).

Problem	N	Percentage
Overall discrepancy between scoring	49	32
Participants correcting their responses	15	9.8
System did not allow for enough time to respond	26	17
System did not “hear” responses	3	2
Participants speaking in low voice	6	3.9
Foreign accent or bad pronunciation	12	7.8
Participant did not wait for the beep	14	9.2
Other verbal problems (e.g., coughing and Ummm)	10	6.5
Speaking in sentences	10	6.5