Digit Span Subtest from WAIS-R amended for experimental purposes Instructions for administration: Read the digits in a monotone voice at an even pace of approx. 1 second per digit. When you have finished, tell participants to write down the numbers. Allow participants approx. 5 seconds to write down the digits before proceeding to the next item series. Instructions for participants: I am going to read out series of numbers. Each series will increase by 1 digit. When I have finished reading out each series, I will say go and you should then write down as many numbers as you can remember in the same order that I read them. For example, if I say 3-2-7 -Go, you should then write down 3-2-7. Ready to begin? DIGITS FORWARD ITEM FIRST TRIAL A 3-8 B 5-4-7 C 9-1-6-2 D 6-3-7-8-1 E 5-3-9-7-1-2 F 4-8-1-7-6-5-1 G 8-2-3-6-5-9-2-4 H 5-2-6-2-4-1-9-7-8 I 9-5-9-3-7-6-1-4-3-8 J 3-2-9-6-1-9-7-3-4-7-1 ITEM SECOND TRIAL A 1-6 B 6-3-8 C 3-9-1-4 D 4-3-1-6-7 E 8-9-3-5-1-2 F 5-6-4-1-9-7-8 G 1-5-7-3-7-6-1-4 H 6-7-3-9-1-7-3-7-1 I 8-3-9-6-2-4-6-4-9-1 J 5-3-9-8-5-1-8-9-6-7-2 Instructions for participants: I am now going to read out another series of numbers. Once again, each series will increase by 1 digit. When I have finished reading out each series, I will say Go and you should then write down as many numbers as you can remember this time in reverse order. For example if I say 3-2-7, you should write down 7-2-3. Ready to begin? DIGITS BACKWARDS ITEM THIRD TRIAL A 7-1 B 5-1-6 C 2-5-8-3 D 1-3-9-4-5 E 9-1-6-3-2-7 F 3-7-6-9-5-8-1 G 1-7-3-8-5-4-6-9 H 6-7-3-4-2-5-7-5-9 I 1-9-7-3-6-8-2-5-1-7 J 5-3-9-8-5-9-1-3-9-2-6 ITEM FOURTH TRIAL A 4-2 B 1-2-5 C 1-5-2-1 D 6-7-9-1-8 E 5-3-4-6-1-7 F 9-3-7-1-4-7-2 G 2-6-3-4-9-7-1-8 H 2-4-6-9-7-3-1-5-3 I 6-8-2-9-4-7-1-2-8-3 J 1-7-4-2-3-8-1-8-9-3-4 Scoring instructions for experimenters An item is incorrect if even ONE number is incorrect or out of place in the series. An item can only be mark an item as correct if EVERY number is correct AND in the correct order in the series. This is very important. Once each item has been marked, identify the length of the longest series that was correct. For example, if for Trial 1 a participant got every item up to D correct, and then got E wrong, but got F correct and then G,H,I and J incorrect F is the longest series that was correct for Trial 1. So, you should record 7 as the length of the longest series they got correct for Trial 1. Do the same for Trial 2, 3 and 4. From the four numbers one for each trial calculate the average. This will provide the AVERAGE MEMORY SPAN.