Table 1.

Example of Reliable Digit Span calculation

Digit Span forward					Digit Span backward
Trial	Span	Presented	Response	Score	Trial	Span	Presented	Response	Score
1	2	1 2	1 2	1	1	2*	2 3	3 2	1
		2 3	2 3	1			3 4	4 3	1
2	3*	1 2 3	1 2 3	1	2	3	2 3 4	2 1 3	0
		2 3 4	2 3 4	1			3 4 5	5 3 4	0
3	4	1 2 3 4	1 2 3 4	1	3	4	1 2 3 4	-	-
		2 3 4 5	1 2 4 4	0			2 3 4 5	-	-
4	5	1 2 3 4 5	1 2 2 3 5	0	4	5	1 2 3 4 5	-	-
		2 3 4 5 6	2 4 5 4 5	0			2 3 4 5 6	-	-
Reliable Digit Span score=5pts

^*Reliable Digit Span score: Longest Digit Span forward score+Longest Digit Span backward score (ex. 3 span+2 span → Reliable Digit Span score 5 pts.), Longest Digit Span score where two questions must be answered correctly in the trial with the same Digit Span