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. 2026 Jun 17;4:133. doi: 10.1038/s44271-026-00484-x

Table 1.

Participant demographic information

ENG (n = 259) HK (n = 266) MC (n = 324) Effect sizes for group differences
Child
Age (M, SD) 5.26 (0.37) 4.94 (0.36) 5.28 (0.64) η2 = 0.090 [0.055, 0.127]
Range 4.42–6.52 years 4.00–5.74 years 4.01–6.49 years
Gender (% female) 127 (49) 129 (48) 155 (48) Cramér’s V = 0.010 [0.000, 0.034]
Gender (% male) 132 (51) 137 (52) 169 (52)
Parent
Age (M, SD) 38.44 (4.53) 37.88 (3.98) 34.92 (3.93) η2 = 0.129 [0.089, 0.170]
Range 20–54 years 28–53 years 23–47 years
Gender (% female) 243 (94) 238 (90) 308 (95) Cramér’s V = 0.082 [0.000, 0.144]
Gender (% male) 16 (6) 26 (10) 16 (5)
Parent education (% degree-level) 223 (86) 147 (55) 269 (83) η2 = 0.134 [0.094, 0.176]
Perceived social standing (M, SD) 6.53 (1.40) 6.23 (1.53) 5.94 (1.48) η2 = 0.027 [0.009, 0.051]

Parent education (% degree-level) = percentage of parents having a bachelor’s degree or higher. Perceived social standing = parents’ perceived standing on a 10-rung social ladder. All child and parent participants identified as either male or female; 95% confidence intervals are presented in brackets.

ENG England, HK Hong Kong, MC Mainland China.