TABLE 2.

Descriptive data for participants

	n	Mean	SD	Min	Max
Age in months (Spring 2020)	575	20.36	7.09	8.09	35.67
Age in months (Winter 2020)	218	25.02	5.40	14.83	36.76
SocioEconomic Status (SES): all participants contributing Spring 2020 EF data	575	0.01	1.03	−3.03	2.01
SES: participants contributing both Spring 2020 and Winter 2020 EF data	218	0.05	1.00	−2.55	2.01
Early Learning, Affection and Attachment (EL‐AA) score	575	5.55	0.33	4.20	6.00
Spring 2020 Cognitive Executive Function (CEF) (raw)	575	4.67	0.76	2.27	6.61
Winter 2020 CEF (raw)	215	4.91	0.64	2.71	6.28
Spring 2020 Regulation (raw)	574	5.31	1.03	1.88	7.00
Winter 2020 Regulation (raw)	217	5.24	1.00	2.13	6.88
Pre‐lockdown Enriching Activities a	492	25.98	10.07	4	69
Spring lockdown Enriching Activities a	492	37.43	10.42	13	69
Winter lockdown Enriching Activities a	227	147.03	58.49	34	366
2020 Pandemic Enriching Activities a	227	−0.05	0.80	−1.90	2.68
Pre‐lockdown Screen Use b	492	6.83	5.70	0	33
Spring lockdown Screen Use b	492	10.43	6.95	0	39
Winter lockdown Screen Use b	222	38.72	33.18	0	196
2020 Pandemic Screen Use b	222	−0.04	0.90	−1.33	4.14
Early Childhood Education and Care (ECEC): Pre‐lockdown	573	1.12	1.54	0	5
ECEC: Spring lockdown	575	0.26	0.80	0	5
ECEC: Winter lockdown	216	1.04	1.21	0	4.57
ECEC: Across 2020 Pandemic	216	0.93	1.05	0	4.86

^a Possible range for Pre‐lockdown and Spring lockdown Enriching Activities scores = 0–99. Possible range for Winter lockdown Enriching Activities scores = 0–588. 2020 Pandemic Enriching Activities scores computed using Z scores.

^b Possible range for Pre‐lockdown and Spring lockdown Screen Use scores = 0–54. Possible range Winter lockdown Screen Use scores = 0–294. 2020 Pandemic Screen Use scores computed using Z scores.