Metadata and additional information for dataset: ÔData from ESRC grant "The Development of Working Memory" Study 4: primary memory, processing speed, and secondary memory as determinants of children's working memoryÕ This dataset consists of 4 files in addition to this ÔReadMeÕ file. 1 * .csv file contains 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 file: Missing data are indicated by empty cells. Variable names are: ID Subject identifier Year Year group Age age in months Sex male = M, Female = F School Coding for each of 5 different schools SPAN_SCORE Digit span (list at longest length a single trial could be recalled in correct serial order) DS_PCS Digit span partial credit score. Partial credit score is the sum of the proportion of items correctly recalled on each trial attempted by the participant (see methodology file). CS_PCS Complex span partial credit score ARTIC_SINGLE Single word articulation time in milliseconds ARTIC_PAIRS Word pair articulation time in milliseconds MEMP_PCSALL_SP Memory period task partial credit score MP_Initi_time Memory period initiation time in milliseconds FREE_REC_AVITEMS Free recall task average number of items recalled INTERLEAVED_RECALL_A Interleaved lists task average number of attended items recalled Final_FR_TotalRec Final free recall task, total number of items recalled FORGET_SUMDROP_SP Forgetting task score BASELINE_AV Average verbal processing speed RT in milliseconds VISCH_AV Average visual Choice processing speed RT in milliseconds DIGCAN_AV Average digit cancellation processing speed RT in milliseconds DFR_FREEREC_AV Delayed free recall, spontaneous recall average number of items recalled DFR_Semantic_probe Delayed free recall, total benefit of semantic probes (max. 20) DFR_A Delayed free recall A-prime for probe words CONN_IN_t Conners Scale Inattention subscale CONN_HY_t Conners Scale Hyperactivity subscale CONN_LE_t Conners Scale Learning and Executive function subscale CONN_AG_t Conners Scale Aggression subscale CONN_PR_t Conners Scale Peer Relations subscale COMPLETE_CONNORS Filter to identify cases where data is missing from the Connors scale. 0 = missing data READING_TOTAL Total Reading score READING_BEG Reading score for 'Beginning' Cloze sentences READING_MID Reading score for 'Middle' Cloze sentences READING_END Reading score for 'End' Cloze sentences MATHS_SCORE Maths score completeMR Filter to identify cases where data is missing from both the reading and maths assessments. 0 = missing data