Metadata and additional information for dataset: ÔData from ESRC grant "The Development of Working Memory" Study 1: primary memory developmentÕ

This dataset consists of 10 files in addition to this ÔReadMeÕ file.  7 * .csv files contain data, 2 * .pdf files provide examples of the parent/carer information sheet and consent form respectively, 1 * .txt file provides further details on the methodology employed in this study.


The remaining text, below, provides further details on the contents of the .csv data files:


Each stage of the analysis presented in the associated published paper has a separate .csv file.
Each file has the following variables in common:

ID
Unique participant number

Age
Age in months at time of testing

Year
School year group

School
School identifier

Gender
Male = 1 , Female = 0

Missing_Data
Identifier for missing data. 1 = missing


Data File 1: Free_recall_probability_data Ð this file is used to calculate serial position curves and probability of recall for any item in the free recall task. All values are probabilities of recall that range from zero to 1.  The variable names are as follows: 

LL2:1
Probability of recall; List length 2, serial position 1

LL2:2
Probability of recall; List length 2, serial position 2

LL3:1
Probability of recall; List length 3, serial position 1

LL3:2
Probability of recall; List length 3, serial position 2

LL3:3
Probability of recall; List length 3, serial position 3

LL4:1
Probability of recall; List length 4, serial position 1

LL4:2
Probability of recall; List length 4, serial position 2

LL4:3
Probability of recall; List length 4, serial position 3

LL4:4
Probability of recall; List length 4, serial position 4

LL5:1
Probability of recall; List length 5, serial position 1

LL5:2
Probability of recall; List length 5, serial position 2

LL5:3
Probability of recall; List length 5, serial position 3

LL5:4
Probability of recall; List length 5, serial position 4

LL5:5
Probability of recall; List length 5, serial position 5

LL6:1
Probability of recall; List length 6, serial position 1

LL6:2
Probability of recall; List length 6, serial position 2

LL6:3
Probability of recall; List length 6, serial position 3

LL6:4
Probability of recall; List length 6, serial position 4

LL6:5
Probability of recall; List length 6, serial position 5

LL6:6
Probability of recall; List length 6, serial position 6

LL7:1
Probability of recall; List length 7, serial position 1

LL7:2
Probability of recall; List length 7, serial position 2

LL7:3
Probability of recall; List length 7, serial position 3

LL7:4
Probability of recall; List length 7, serial position 4

LL7:5
Probability of recall; List length 7, serial position 5

LL7:6
Probability of recall; List length 7, serial position 6

LL7:7
Probability of recall; List length 7, serial position 7

LL8:1
Probability of recall; List length 8, serial position 1

LL8:2
Probability of recall; List length 8, serial position 2

LL8:3
Probability of recall; List length 8, serial position 3

LL8:4
Probability of recall; List length 8, serial position 4

LL8:5
Probability of recall; List length 8, serial position 5

LL8:6
Probability of recall; List length 8, serial position 6

LL8:7
Probability of recall; List length 8, serial position 7

LL8:8
Probability of recall; List length 8, serial position 8


Data File 2: Free_recall_p1st_data - used to calculate the probability of 1st recall of any item in the free recall task.  All values are probability of recall values that range from zero to 1.

LL2:1
Probablity of recalling item 1st; List length 2, serial position 1

LL2:2
Probablity of recalling item 1st; List length 2, serial position 2

LL3:1
Probablity of recalling item 1st; List length 3, serial position 1

LL3:2
Probablity of recalling item 1st; List length 3, serial position 2

LL3:3
Probablity of recalling item 1st; List length 3, serial position 3

LL4:1
Probablity of recalling item 1st; List length 4, serial position 1

LL4:2
Probablity of recalling item 1st; List length 4, serial position 2

LL4:3
Probablity of recalling item 1st; List length 4, serial position 3

LL4:4
Probablity of recalling item 1st; List length 4, serial position 4

LL5:1
Probablity of recalling item 1st; List length 5, serial position 1

LL5:2
Probablity of recalling item 1st; List length 5, serial position 2

LL5:3
Probablity of recalling item 1st; List length 5, serial position 3

LL5:4
Probablity of recalling item 1st; List length 5, serial position 4

LL5:5
Probablity of recalling item 1st; List length 5, serial position 5

LL6:1
Probablity of recalling item 1st; List length 6, serial position 1

LL6:2
Probablity of recalling item 1st; List length 6, serial position 2

LL6:3
Probablity of recalling item 1st; List length 6, serial position 3

LL6:4
Probablity of recalling item 1st; List length 6, serial position 4

LL6:5
Probablity of recalling item 1st; List length 6, serial position 5

LL6:6
Probablity of recalling item 1st; List length 6, serial position 6

LL7:1
Probablity of recalling item 1st; List length 7, serial position 1

LL7:2
Probablity of recalling item 1st; List length 7, serial position 2

LL7:3
Probablity of recalling item 1st; List length 7, serial position 3

LL7:4
Probablity of recalling item 1st; List length 7, serial position 4

LL7:5
Probablity of recalling item 1st; List length 7, serial position 5

LL7:6
Probablity of recalling item 1st; List length 7, serial position 6

LL7:7
Probablity of recalling item 1st; List length 7, serial position 7

LL8:1
Probablity of recalling item 1st; List length 8, serial position 1

LL8:2
Probablity of recalling item 1st; List length 8, serial position 2

LL8:3
Probablity of recalling item 1st; List length 8, serial position 3

LL8:4
Probablity of recalling item 1st; List length 8, serial position 4

LL8:5
Probablity of recalling item 1st; List length 8, serial position 5

LL8:6
Probablity of recalling item 1st; List length 8, serial position 6

LL8:7
Probability of recalling item 1st; List length 8, serial position 7

LL8:8
Probability of recalling item 1st; List length 8, serial position 8



Data File 3: Interleaved_lists_probability_data Ð used to calculate serial position curves and probability of recall for any item in the interleaved lists task. All values are probabilities of recall that range from zero to 1.

A:LL3:1
Probability of recall: Focal item, list length 3, item 1

A:LL3:2
Probability of recall: Focal item, list length 3, item 2

A:LL4:1
Probability of recall: Focal item, list length 4, item 1

A:LL4:2
Probability of recall: Focal item, list length 4, item 2

A:LL5:1
Probability of recall: Focal item, list length 5, item 1

A:LL5:2
Probability of recall: Focal item, list length 5, item 2

A:LL5:3
Probability of recall: Focal item, list length 5, item 3

A:LL6:1
Probability of recall: Focal item, list length 6, item 1

A:LL6:2
Probability of recall: Focal item, list length 6, item 2

A:LL6:3
Probability of recall: Focal item, list length 6, item 3

U:LL3:1
Probability of recall: Non-focal item, list length 3, item 1

U:LL4:1
Probability of recall: Non-focal item, list length 4, item 1

U:LL4:2
Probability of recall: Non-focal item, list length 4, item 2

U:LL5:1
Probability of recall: Non-focal item, list length 5, item 1

U:LL5:2
Probability of recall: Non-focal item, list length 5, item 2

U:LL6:1
Probability of recall: Non-focal item, list length 6, item 1

U:LL6:2
Probability of recall: Non-focal item, list length 6, item 2

U:LL6:3
Probability of recall: Non-focal item, list length 6, item 3


Data File 4: Interleaved_lists_p1st_data - used to calculate probability of 1st recall for any item in the interleaved lists task. All values are probability of recall values that range from zero to 1.

A:LL3:1
Probability of recalling item 1st, focal item, list length 3, item 1

A:LL3:2
Probability of recalling item 1st, focal item, list length 3, item 2

A:LL4:1
Probability of recalling item 1st, focal item, list length 4, item 1

A:LL4:2
Probability of recalling item 1st, focal item, list length 4, item 2

A:LL5:1
Probability of recalling item 1st, focal item, list length 5, item 1

A:LL5:2
Probability of recalling item 1st, focal item, list length 5, item 2

A:LL5:3
Probability of recalling item 1st, focal item, list length 5, item 3

A:LL6:1
Probability of recalling item 1st, focal item, list length 6, item 1

A:LL6:2
Probability of recalling item 1st, focal item, list length 6, item 2

A:LL6:3
Probability of recalling item 1st, focal item, list length 6, item 3

U:LL3:1
Probability of recalling item 1st, non-focal item, list length 3, item 1

U:LL4:1
Probability of recalling item 1st, non-focal item, list length 4, item 1

U:LL4:2
Probability of recalling item 1st, non-focal item, list length 4, item 2

U:LL5:1
Probability of recalling item 1st, non-focal item, list length 5, item 1

U:LL5:2
Probability of recalling item 1st, non-focal item, list length 5, item 2

U:LL6:1
Probability of recalling item 1st, non-focal item, list length 6, item 1

U:LL6:2
Probability of recalling item 1st, non-focal item, list length 6, item 2

U:LL6:3
Probability of recalling item 1st, non-focal item, list length 6, item 3


Data File 5: Split_span_probability_data - used to calculate serial position curves and probability of recall for any item in the split span task. All values are probabilities of recall that range from zero to 1.

1-5:C1:1
Probability of recall; Probed first, Set A, list length 1, item 1

1-5:D2:1
Probability of recall; Probed second, Set B, list length 5, item 1

1-5:D2:2
Probability of recall; Probed second, Set B, list length 5, item 2

1-5:D2:3
Probability of recall; Probed second, Set B, list length 5, item 3

1-5:D2:4
Probability of recall; Probed second, Set B, list length 5, item 4

1-5:D2:5
Probability of recall; Probed second, Set B, list length 5, item 5

1-5:C2:1
Probability of recall; Probed second, Set A, list length 1, item 1

1-5:D1:1
Probability of recall; Probed first, Set B, list length 5, item 1

1-5:D1:2
Probability of recall; Probed first, Set B, list length 5, item 2

1-5:D1:3
Probability of recall; Probed first, Set B, list length 5, item 3

1-5:D1:4
Probability of recall; Probed first, Set B, list length 5, item 4

1-5:D1:5
Probability of recall; Probed first, Set B, list length 5, item 5

2-4:C1:1
Probability of recall; Probed first, Set A, list length 2, item 1

2-4:C1:2
Probability of recall; Probed first, Set A, list length 2, item 2

2-4:D2:1
Probability of recall; Probed second, Set B, list length 4, item 1

2-4:D2:2
Probability of recall; Probed second, Set B, list length 4, item 2

2-4:D2:3
Probability of recall; Probed second, Set B, list length 4, item 3

2-4:D2:4
Probability of recall; Probed second, Set B, list length 4, item 4

2-4:C2:1
Probability of recall; Probed second, Set A, list length 2, item 1

2-4:C2:2
Probability of recall; Probed second, Set A, list length 2, item 2

2-4:D1:1
Probability of recall; Probed first, Set B, list length 4, item 1

2-4:D1:2
Probability of recall; Probed first, Set B, list length 4, item 2

2-4:D1:3
Probability of recall; Probed first, Set B, list length 4, item 3

2-4:D1:4
Probability of recall; Probed first, Set B, list length 4, item 4

3-3:C1:1
Probability of recall; Probed first, Set A, list length 3, item 1

3-3:C1:2
Probability of recall; Probed first, Set A, list length 3, item 2

3-3:C1:3
Probability of recall; Probed first, Set A, list length 3, item 3

3-3:D2:1
Probability of recall; Probed second, Set B, list length 3, item 1

3-3:D2:2
Probability of recall; Probed second, Set B, list length 3, item 2

3-3:D2:3
Probability of recall; Probed second, Set B, list length 3, item 3

3-3:C2:1
Probability of recall; Probed second, Set A, list length 3, item 1

3-3:C2:2
Probability of recall; Probed second, Set A, list length 3, item 2

3-3:C2:3
Probability of recall; Probed second, Set A, list length 3, item 3

3-3:D1:1
Probability of recall; Probed first, Set B, list length 3, item 1

3-3:D1:2
Probability of recall; Probed first, Set B, list length 3, item 2

3-3:D1:3
Probability of recall; Probed first, Set B, list length 3, item 3

4-2:C1:1
Probability of recall; Probed first, Set A, list length 4, item 1

4-2:C1:2
Probability of recall; Probed first, Set A, list length 4, item 2

4-2:C1:3
Probability of recall; Probed first, Set A, list length 4, item 3

4-2:C1:4
Probability of recall; Probed first, Set A, list length 4, item 4

4-2:D2:1
Probability of recall; Probed second, Set B, list length 2, item 1

4-2:D2:2
Probability of recall; Probed second, Set B, list length 2, item 2

4-2:C2:1
Probability of recall; Probed second, Set A, list length 4, item 1

4-2:C2:2
Probability of recall; Probed second, Set A, list length 4, item 2

4-2:C2:3
Probability of recall; Probed second, Set A, list length 4, item 3

4-2:C2:4
Probability of recall; Probed second, Set A, list length 4, item 4

4-2:D1:1
Probability of recall; Probed first, Set B, list length 2, item 1

4-2:D1:2
Probability of recall; Probed first, Set B, list length 2, item 2

5-1:C1:1
Probability of recall; Probed first, Set A, list length 5, item 1

5-1:C1:2
Probability of recall; Probed first, Set A, list length 5, item 2

5-1:C1:3
Probability of recall; Probed first, Set A, list length 5, item 3

5-1:C1:4
Probability of recall; Probed first, Set A, list length 5, item 4

5-1:C1:5
Probability of recall; Probed first, Set A, list length 5, item 5

5-1:D2:1
Probability of recall; Probed second, Set B, list length 1, item 1

5-1:C2:1
Probability of recall; Probed second, Set A, list length 5, item 1

5-1:C2:2
Probability of recall; Probed second, Set A, list length 5, item 2

5-1:C2:3
Probability of recall; Probed second, Set A, list length 5, item 3

5-1:C2:4
Probability of recall; Probed second, Set A, list length 5, item 4

5-1:C2:5
Probability of recall; Probed second, Set A, list length 5, item 5

5-1:D1:1
Probability of recall; Probed first, Set B, list length 1, item 1


Data File 6: Split_span_p1st_data - used to calculate probability of 1st recall for any item in the split span task. All values are probability of recall values that range from zero to 1.

1-5:C1:1
Probability of recalling item first; Probed first, Set A, list length 1, item 1

1-5:D2:1
Probability of recalling item first; Probed second, Set B, list length 5, item 1

1-5:D2:2
Probability of recalling item first; Probed second, Set B, list length 5, item 2

1-5:D2:3
Probability of recalling item first; Probed second, Set B, list length 5, item 3

1-5:D2:4
Probability of recalling item first; Probed second, Set B, list length 5, item 4

1-5:D2:5
Probability of recalling item first; Probed second, Set B, list length 5, item 5

1-5:C2:1
Probability of recalling item first; Probed second, Set A, list length 1, item 1

1-5:D1:1
Probability of recalling item first; Probed first, Set B, list length 5, item 1

1-5:D1:2
Probability of recalling item first; Probed first, Set B, list length 5, item 2

1-5:D1:3
Probability of recalling item first; Probed first, Set B, list length 5, item 3

1-5:D1:4
Probability of recalling item first; Probed first, Set B, list length 5, item 4

1-5:D1:5
Probability of recalling item first; Probed first, Set B, list length 5, item 5

2-4:C1:1
Probability of recalling item first; Probed first, Set A, list length 2, item 1

2-4:C1:2
Probability of recalling item first; Probed first, Set A, list length 2, item 2

2-4:D2:1
Probability of recalling item first; Probed second, Set B, list length 4, item 1

2-4:D2:2
Probability of recalling item first; Probed second, Set B, list length 4, item 2

2-4:D2:3
Probability of recalling item first;Probed second, Set B, list length 4, item 3

2-4:D2:4
Probability of recalling item first; Probed second, Set B, list length 4, item 4

2-4:C2:1
Probability of recalling item first; Probed second, Set A, list length 2, item 1

2-4:C2:2
Probability of recalling item first; Probed second, Set A, list length 2, item 2

2-4:D1:1
Probability of recalling item first; Probed first, Set B, list length 4, item 1

2-4:D1:2
Probability of recalling item first; Probed first, Set B, list length 4, item 2

2-4:D1:3
Probability of recalling item first; Probed first, Set B, list length 4, item 3

2-4:D1:4
Probability of recalling item first; Probed first, Set B, list length 4, item 4

3-3:C1:1
Probability of recalling item first; Probed first, Set A, list length 3, item 1

3-3:C1:2
Probability of recalling item first; Probed first, Set A, list length 3, item 2

3-3:C1:3
Probability of recalling item first; Probed first, Set A, list length 3, item 3

3-3:D2:1
Probability of recalling item first; Probed second, Set B, list length 3, item 1

3-3:D2:2
Probability of recalling item first; Probed second, Set B, list length 3, item 2

3-3:D2:3
Probability of recalling item first; Probed second, Set B, list length 3, item 3

3-3:C2:1
Probability of recalling item first; Probed second, Set A, list length 3, item 1

3-3:C2:2
Probability of recalling item first; Probed second, Set A, list length 3, item 2

3-3:C2:3
Probability of recalling item first; Probed second, Set A, list length 3, item 3

3-3:D1:1
Probability of recalling item first; Probed first, Set B, list length 3, item 1

3-3:D1:2
Probability of recalling item first; Probed first, Set B, list length 3, item 2

3-3:D1:3
Probability of recalling item first; Probed first, Set B, list length 3, item 3

4-2:C1:1
Probability of recalling item first; Probed first, Set A, list length 4, item 1

4-2:C1:2
Probability of recalling item first; Probed first, Set A, list length 4, item 2

4-2:C1:3
Probability of recalling item first; Probed first, Set A, list length 4, item 3

4-2:C1:4
Probability of recalling item first; Probed first, Set A, list length 4, item 4

4-2:D2:1
Probability of recalling item first; Probed second, Set B, list length 2, item 1

4-2:D2:2
Probability of recalling item first; Probed second, Set B, list length 2, item 2

4-2:C2:1
Probability of recalling item first; Probed second, Set A, list length 4, item 1

4-2:C2:2
Probability of recalling item first; Probed second, Set A, list length 4, item 2

4-2:C2:3
Probability of recalling item first; Probed second, Set A, list length 4, item 3

4-2:C2:4
Probability of recalling item first; Probed second, Set A, list length 4, item 4

4-2:D1:1
Probability of recalling item first; Probed first, Set B, list length 2, item 1

4-2:D1:2
Probability of recalling item first; Probed first, Set B, list length 2, item 2

5-1:C1:1
Probability of recalling item first; Probed first, Set A, list length 5, item 1

5-1:C1:2
Probability of recalling item first; Probed first, Set A, list length 5, item 2

5-1:C1:3
Probability of recalling item first; Probed first, Set A, list length 5, item 3

5-1:C1:4
Probability of recalling item first; Probed first, Set A, list length 5, item 4

5-1:C1:5
Probability of recalling item first; Probed first, Set A, list length 5, item 5

5-1:D2:1
Probability of recalling item first; Probed second, Set B, list length 1, item 1

5-1:C2:1
Probability of recalling item first; Probed second, Set A, list length 5, item 1

5-1:C2:2
Probability of recalling item first; Probed second, Set A, list length 5, item 2

5-1:C2:3
Probability of recalling item first; Probed second, Set A, list length 5, item 3

5-1:C2:4
Probability of recalling item first; Probed second, Set A, list length 5, item 4

5-1:C2:5
Probability of recalling item first; Probed second, Set A, list length 5, item 5

5-1:D1:1
Probability of recalling item first; Probed first, Set B, list length 1, item 1



Data File 7: Individual_differences_data Ð used in all correlational and regression analysis. 

SS_PCS
Simple span partial credit score

CS_PCS
Complex span partial credit score

FR_Av
Free recall - average number of items recalled from a list in the free recall task

FR_p1st
Free recall - probability of recalling the first item first on the free recall task

IL_Av
Interleaved Lists - average number of items recalled from a list in the interleaved lists task

IL_p1st
Interleaved Lists - probability of recalling the first item first in the interleaved lists task

SpSp_tot
Split span - total number of items recalled across Set B lists in the split span task

SpSp_p1st
Split span - probability of recalling the first Set B item first in the split span task

Reading
Total reading score

Maths
Total maths score