itle: “The role of night and day sleep in children’s language development: an exploratory longitudinal study” Description: dataset of a poster presentation Theme: examining the relationship between sleep features (night and day sleep) and language skills in a longitudinal design study. Modification date: July 2024 Details: before labels m = mean; a= actigraphy; D = diary; B = bisq; Variables' meaning: ID = Child's code Time = Time point T0_STEP_questionario linguaggio = language step at T0 AGE = children's age LENA_REC_SECS = LENA recording duration (in sec) LENA_AWC = Adult Words Count LENA_CTC= Conversational Turns Count LENA_CVC= Child Vocalization Count TOT_ENVIRONMENT Meaningful = meaningful speech (sec) %meaningful= meaningful speech (%) Distant = distant speech (sec) %distant= distant speech (%) TV_Elec = TV and electronic devices (sec) %TV=TV and electronic devices (%) Overlap = speech in overlap (sec) %over = speech in overlap (%) Noise= environmental noise (sec) %noise = environmental noise (%) Silence = environmental silence (sec) %silence = environmental silence (%) PVB_PROD = Number of produced items (MBCDI) PVB_COMPR = Number of comprehended items (MBCDI) Gestures = Number of gestures BDS_number = bisq naps number BDS_duration = bisq naps duration BNW_number = bisq number of night awakenings BWASO = bisq duration of awakenings A1NS_duration = actigraph day 1 night sleep duration A1NS_duration = actigraph day 1night sleep duration (without awakenings) A1WASO = actigraph day 1 duration of night awakenings A1EFF = actigraph day 1 sleep efficiency A1DS_number = actigraph day 1 naps number A1DS_duration = actigraph day 1 naps duration D1DS_number = diary day 1 number A2NS_assumed duration = actigraph day 2 night sleep duration A2NS_duration = actigraph day 2 night sleep duration (without awakenings) A2WASO = actigraph day 2 awakenings duration A2EFF = actigraph day 2 sleep efficiency A2DS_number = actigraph day 2 naps number A2DS_duration = actigraph day 2 naps duration D2DS_number = diary day 2 naps number A3NS_assumed duration = actigraph day 3 night sleep duration A3NS_duration = actigraph day 3 night sleep duration (without awakenings) A3WASO = actigraph day 3 awakenings duration A3EFF= actigraph day 3 sleep efficiency A3DS_number = actigraph day 3 naps number A3DS_duration = actigraph day 3 naps duration D3DS_number = diary day 3 naps number mANS_duration = actigraphy mean night sleep duration mANS_duration = actigraphy mean night sleep duration (without awakenings) mAWASO = actigraphy mean awakenings duration mEFF = actigraphy mean sleep efficiency (automatically retrieved from the actigraph report) wake/sleep ratio = ratio between awakening time and sleep time (night) mEFF_correct = actigraphy mean sleep efficiency (based on data reported in the dataset) mADS_duration = actigraphy mean naps duration mDDS_number = diary mean naps number mADS_number = actigraphy mean naps duration number BNS_duration = bisq night sleep duration D1NS_duration = diary day 1 night sleep duration D1WASO = diary day 1 awakenings duration D1NW_number = diary day 1 number of night awakenings D1DS_duration = diary day 1 naps duration D2NS_duration = diary day 2 night sleep duration D2WASO = diary day 2 awakenings duration D2NW_number = diary day 2 number of night awakenings D2DS_duration = diary day 2 naps duration D3NS_duration = diary day 3 night sleep duration D3WASO = diary day 3 awakenings duration D3NW_number = diary day 3 number of night awakenings D3DS_duration = diary day 3 naps duration mDNS_duration = diary mean night sleep duration mDWASO = diary mean awakenings duration mDNW_number = diary mean number of night awakenings mDDS_duration = diary mean naps duration The same variables are repeated for TIME 1.