
subjectkey 
GUID 

Required 
The NDAR Global Unique Identifier (GUID) for research subject 
NDAR*


subject_key 

src_subject_id 
String 
20

Required 
Subject ID how it's defined in lab/project 


subject_id 

interview_age 
Integer 

Required 
Age in months at the time of the interview/test/sampling/imaging. 
0 :: 1260

Age is rounded to chronological month. If the research participant is 15daysold at time of interview, the appropriate value would be 0 months. If the participant is 16daysold, the value would be 1 month.

dob 

interview_date 
Date 

Required 
Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY 


date_of_birth, date_of_rating 

sex 
String 
20

Required 
Sex of subject at birth 
M;F; O; NR

M = Male; F = Female; O=Other; NR = Not reported

gender 

dode 
String 
10

Recommended 
Date of Data Entry 


date_of_entry 
Query

aescode 
Integer 

Recommended 
Staff code number of person completing this form 

999= Missing Data

rater, rater_initials 

comments_misc 
String 
4,000

Recommended 
Miscellaneous comments on study, interview, methodology relevant to this form data 


notes 

version_form 
String 
121

Recommended 
Form used/assessment name 



Query

pupil_record 
Integer 

Recommended 
Was the pupil recorded in this trial? 
0;1

0 = No; 1 = Yes


Query

trial 
Integer 

Recommended 
Trial number 
0::400; 777; 999

1 = first; 2= second; 3=third; 4=fourth; 5=fifth; 6=sixth; etc; 777=NA, 999=missing


Query

ds2a 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 2 in Trial A 
0::2

Pupil is recorded while ppt recall digits


Query

ds2b 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 2 in Trial B 
0::2

Pupil is recorded while ppt recall digits


Query

ds3a 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 3 in Trial A 
0::3

Pupil is recorded while ppt recall digits

s3a 
Query

ds3b 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 3 in Trial B 
0::3

Pupil is recorded while ppt recall digits

s3b 
Query

ds4a 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 4 in Trial A 
0::4

Pupil is recorded while ppt recall digits

s4a 
Query

ds4b 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 4 in Trial B 
0::4

Pupil is recorded while ppt recall digits

s4b 
Query

ds5a 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 5 in Trial A 
0::5

Pupil is recorded while ppt recall digits

s5a 
Query

ds5b 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 5 in Trial B 
0::5

Pupil is recorded while ppt recall digits

s5b 
Query

ds6a 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 6 in Trial A 
0::6

Pupil is recorded while ppt recall digits

s6a 
Query

ds6b 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 6 in Trial B 
0::6

Pupil is recorded while ppt recall digits

s6b 
Query

ds7a 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 7 in Trial A 
0::7

Pupil is recorded while ppt recall digits

s7a 
Query

ds7b 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 7 in Trial B 
0::7

Pupil is recorded while ppt recall digits

s7b 
Query

ds8a 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 8 in Trial A 
0::8

Pupil is recorded while ppt recall digits

s8a 
Query

ds8b 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 8 in Trial B 
0::8

Pupil is recorded while ppt recall digits

s8b 
Query

ds9a 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 9 in Trial A 
0::9

Pupil is recorded while ppt recall digits

s9a 
Query

ds9b 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 9 in Trial B 
0::9

Pupil is recorded while ppt recall digits

s9b 
Query

max_digit_span 
Integer 

Recommended 
Maximum Digit Span 

Test is discontinued after scores of 0 on both trials of an item. Max DS is determined by greatest correct trial number.

max_span 
Query

ds_effort_mm 
Integer 

Recommended 
Digit Span Comprehension: How hard did you try on this task? 
0::145

ppt rate how hard they tried on DS task by marking a scale ranging from "No Effort at all, Did not try" to "My greatest effort, could not try harder". Scale is measured in mm.

ds_comprehension:_effort 
Query

ds_taskdiff_mm 
Integer 

Recommended 
Digit Span Comprehension: How hard was this task? 
0::145

ppt rate how hard they tried on DS task by marking a scale ranging from "Extremely Easy" to "Extremely Difficult". Scale is measured in mm.

ds_comprehension:_task_difficulty 
Query

ds_undst_mm 
Integer 

Recommended 
Digit Span Comprehension: How well did you understand what you were being asked to do on this task? 
0::145

ppt rate how hard they tried on DS task by marking a scale ranging from "Did not understand at all" to "Understood completely". Scale is measured in mm.

ds_comprehension:_understanding 
Query

semantic 
Integer 

Recommended 
Semantic Fluency: Total number of words 


semantic_total 
Query

category 
Integer 

Recommended 
Category Fluency: Total number of words 


category_total 
Query

ds3c 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 3 in Trial C 
0::3

Pupil is recorded while ppt recall digits

s3c 
Query

ds3d 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 3 in Trial D 
0::3

Pupil is recorded while ppt recall digits


Query

ds6c 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 6 in Trial C 
0::6

Pupil is recorded while ppt recall digits

s6c 
Query

ds6d 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 6 in Trial D 
0::6

Pupil is recorded while ppt recall digits


Query

ds9c 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 9 in Trial C 
0::9

Pupil is recorded while ppt recall digits

s9c 
Query

ds9d 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 9 in Trial D 
0::9

Pupil is recorded while ppt recall digits


Query

max_dsa 
Integer 

Recommended 
Maximal Digit Span: Length in Trial A 

Pupil is recorded while ppt recall max digits. Span length is based on max_digit_span. Only collected if max_digit_span is not 3 or 6. If 2 good trials, disontinue span.


Query

max_dsb 
Integer 

Recommended 
Maximal Digit Span: Length in Trial B 

Pupil is recorded while ppt recall max digits. Span length is based on max_digit_span. Only collected if max_digit_span is not 3 or 6. If 2 good trials, disontinue span.


Query

max_dsc 
Integer 

Recommended 
Maximal Digit Span: Length in Trial C 

Pupil is recorded while ppt recall max digits. Span length is based on max_digit_span. Only collected if max_digit_span is not 3 or 6. If 2 good trials, disontinue span.


Query

max_dsd 
Integer 

Recommended 
Maximal Digit Span: Length in Trial D 

Pupil is recorded while ppt recall max digits. Span length is based on max_digit_span. Only collected if max_digit_span is not 3 or 6. If 2 good trials, disontinue span.


Query

form_completed 
Integer 

Recommended 
Was the form completed? 
1::4

1=Yes; 2=No; 3=Unverified; 4 = N/ANot in age range

completed, was_form_completed? 

digifor 
Integer 

Recommended 
Digit span forward 
0::20




digibac 
Integer 

Recommended 
Digit span backward 
0::16




digitaltotal 
Integer 

Recommended 
Digit span total score 
0::32




t1wk 
Integer 

Recommended 
Weeks since Treatment Session 1 



Query

visit 
String 
60

Recommended 
Visit name 


time_point 

ds4c 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 4 in Trial C 
0::4

Pupil is recorded while ppt recall digits

s4c 

ds5c 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 5 in Trial C 
0::5

Pupil is recorded while ppt recall digits

s5c 

ds7c 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 7 in Trial C 
0::7

Pupil is recorded while ppt recall digits

s7c 

ds8c 
Integer 

Recommended 
Digit Span: # of correct Digits Recalled out of 8 in Trial C 
0::8

Pupil is recorded while ppt recall digits

s8c 

score_ds5b 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 5 in Trial B 
0;1

0 = incorrect; 1 = correct



score_ds6a 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 6 in Trial A 
0;1

0 = incorrect; 1 = correct



score_ds6b 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 6 in Trial B 
0;1

0 = incorrect; 1 = correct



score_ds7a 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 7 in Trial A 
0;1

0 = incorrect; 1 = correct



score_ds7b 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 7 in Trial B 
0;1

0 = incorrect; 1 = correct



score_ds8a 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 8 in Trial A 
0;1

0 = incorrect; 1 = correct



score_ds8b 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 8 in Trial B 
0;1

0 = incorrect; 1 = correct



score_ds9a 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 9 in Trial A 
0;1

0 = incorrect; 1 = correct



score_ds9b 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 9 in Trial B 
0;1

0 = incorrect; 1 = correct



score_ds3c 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 3 in Trial C 
0;1

0 = incorrect; 1 = correct



score_ds3d 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 3 in Trial D 
0;1

0 = incorrect; 1 = correct



score_ds6c 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 6 in Trial C 
0;1

0 = incorrect; 1 = correct



score_ds6d 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 6 in Trial D 
0;1

0 = incorrect; 1 = correct



score_ds9c 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 9 in Trial C 
0;1

0 = incorrect; 1 = correct



score_ds9d 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 9 in Trial D 
0;1

0 = incorrect; 1 = correct



score_ds4c 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 4 in Trial C 
0;1

0 = incorrect; 1 = correct



score_ds5c 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 5 in Trial C 
0;1

0 = incorrect; 1 = correct



score_ds7c 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 7 in Trial C 
0;1

0 = incorrect; 1 = correct



score_ds8c 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 8 in Trial C 
0;1

0 = incorrect; 1 = correct



score_ds2a 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 2 in Trial A 
0;1

0 = incorrect; 1 = correct



score_ds2b 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 2 in Trial B 
0;1

0 = incorrect; 1 = correct



score_ds3a 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 3 in Trial A 
0;1

0 = incorrect; 1 = correct



score_ds3b 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 3 in Trial B 
0;1

0 = incorrect; 1 = correct



score_ds4a 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 4 in Trial A 
0;1

0 = incorrect; 1 = correct



score_ds4b 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 4 in Trial B 
0;1

0 = incorrect; 1 = correct



score_ds5a 
Integer 

Recommended 
Digit Span (item coded as score): All Digits Recalled out of 5 in Trial A 
0;1

0 = incorrect; 1 = correct



nvwm_a_q4t2 
Integer 

Recommended 
Digits Ascending Question 4  Trial 2: 13724 (12347) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q5t1 
Integer 

Recommended 
Digits Ascending Question 5  Trial 1: 784293 (234789) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q5t2 
Integer 

Recommended 
Digits Ascending Question 5  Trial 2: 374916 (134679) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q6t1 
Integer 

Recommended 
Digits Ascending Question 6  Trial 1: 6839714 (1346789) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q6t2 
Integer 

Recommended 
Digits Ascending Question 6  Trial 2: 8295174 (1245789) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q7t1 
Integer 

Recommended 
Digits Ascending Question 7  Trial 1: 47159283 (12345789) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q7t2 
Integer 

Recommended 
Digits Ascending Question 7  Trial 2: 74629185 (12456789) 
0;1

0 = Incorrect; 1 = Correct



digitsa 
Integer 

Recommended 
Digits Ascending TOTAL SCORE 
0::14




nvwm_a_q1t1 
Integer 

Recommended 
Digits Ascending Question 1  Trial 1: 42 (24) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q1t2 
Integer 

Recommended 
Digits Ascending: Question 1  Trial 2: 85 (58) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q2t1 
Integer 

Recommended 
Digits Ascending Question 2  Trial 1: 496 (4 6 9) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q2t2 
Integer 

Recommended 
Digits Ascending Question 2  Trial 2: 285 (2 5 8) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q3t1 
Integer 

Recommended 
Digits Ascending Question 3  Trial 1: 6827 (2678) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q3t2 
Integer 

Recommended 
Digits Ascending Question 3  Trial 2: 9346 (3469) 
0;1

0 = Incorrect; 1 = Correct



nvwm_a_q4t1 
Integer 

Recommended 
Digits Ascending Question 4  Trial 1: 63857 (35678) 
0;1

0 = Incorrect; 1 = Correct



digif_5span_trial2 
Integer 

Recommended 
5 numbers forward trial 2 
0;1

0 = Incorrect; 1 = Correct



digif_6span_trial1 
Integer 

Recommended 
6 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_6span_trial2 
Integer 

Recommended 
6 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_7span_trial1 
Integer 

Recommended 
7 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_7span_trial2 
Integer 

Recommended 
7 numbers forward trial 2 
0;1

0 = Incorrect; 1 = Correct



digif_8span_trial1 
Integer 

Recommended 
8 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_8span_trial2 
Integer 

Recommended 
8 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_9span_trial1 
Integer 

Recommended 
9 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_9span_trial2 
Integer 

Recommended 
9 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digib 
Integer 

Recommended 
Total number of trials correct before to two consecutive errors at the same digit length 
0 :: 14; 95 :: 98

0=0; 1=1; 2=2; 3=3; 4=4; 5=5; 6=6; 7=7; 8=8; 9=9; 10=10=; 11=11; 12=12; 13=13; 14=14; 95 = Physical problem; 96 = Cognitive/behavior problem; 97 = Other problem; 98 = Verbal refusal



digiblen 
Integer 

Recommended 
Longest digit span backward 
0; 2 :: 8

0= None; 2=2; 3=3; 4=4; 5=5; 6=6; 7=7; 8=8



digib_2span_trial1 
Integer 

Recommended 
2 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_2span_trial2 
Integer 

Recommended 
2 numbers backwards trial 2 
0;1

0 = Incorrect; 1 = Correct



digib_3span_trial1 
Integer 

Recommended 
3 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_3span_trial2 
Integer 

Recommended 
3 numbers backwards trial 2 
0;1

0 = Incorrect; 1 = Correct



digib_4span_trial1 
Integer 

Recommended 
4 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_4span_trial2 
Integer 

Recommended 
4 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_5span_trial1 
Integer 

Recommended 
5 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_5span_trial2 
Integer 

Recommended 
5 numbers backwards trial 2 
0;1

0 = Incorrect; 1 = Correct



digib_6span_trial1 
Integer 

Recommended 
6 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digif 
Integer 

Recommended 
Total number of trials correct before to two consecutive errors at the same digit length 
0 :: 14; 95 :: 98

0=0; 1=1; 2=2; 3=3; 4=4; 5=5; 6=6; 7=7; 8=8; 9=9; 10=10=; 11=11; 12=12; 13=13; 14=14; 95 = Physical problem; 96 = Cognitive/behavior problem; 97 = Other problem; 98 = Verbal refusal



digib_6span_trial2 
Integer 

Recommended 
6 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_7span_trial1 
Integer 

Recommended 
7 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_7span_trial2 
Integer 

Recommended 
7 numbers backwards trial 2 
0;1

0 = Incorrect; 1 = Correct



digib_8span_trial1 
Integer 

Recommended 
8 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_8span_trial2 
Integer 

Recommended 
8 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_9span_trial1 
Integer 

Recommended 
9 numbers backwards trial 1 
0;1

0 = Incorrect; 1 = Correct



digib_9span_trial2 
Integer 

Recommended 
9 numbers backwards trial 2 
0;1

0 = Incorrect; 1 = Correct



digiflen 
Integer 

Recommended 
Longest digit span forward 
0; 3 :: 9

0= None; 3=3; 4=4; 5=5; 6=6; 7=7; 8=8; 9=9



digif_3span_trial1 
Integer 

Recommended 
3 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_3span_trial2 
Integer 

Recommended 
3 numbers forward trial 2 
0;1

0 = Incorrect; 1 = Correct



digif_4span_trial1 
Integer 

Recommended 
4 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_4span_trial2 
Integer 

Recommended 
4 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct



digif_5span_trial1 
Integer 

Recommended 
5 numbers forward trial 1 
0;1

0 = Incorrect; 1 = Correct

