Fig 1.
Rotating tray with two containers.
Fig 2.
The quality and quantity condition test trials in Experiment 2.
The least preferred (LP) in location 1 would come within participants’ reach after 5 seconds, and location 2 with the most preferred (MP) reward after 15 seconds.
Fig 3.
Mean percentage of correct test trials across age groups by condition (quality and quantity) in Experiment 1 & 2.
* indicates performance above chance level (p < 0.05), error bars indicate standard errors. Data on the British children has been published in Miller et al. [52].
Fig 4.
Mean percentage of correct test trials across conditions by age groups in Experiment 1.
* indicates performance above chance level (p < 0.05), error bars indicate standard errors. Across countries, 5-year-olds outperformed 3- and 4-year-olds respectively, with no difference between 3- and 4- year-olds’ performance, indicated by the significance lines. Data on the British children has been published in Miller et al. [52].
Table 1.
Generalized linear mixed models for Experiment 1.
Fig 5.
Mean percentage of correct test trials across condition by age groups in Experiment 2.
* indicates performance above chance level (p< 0.05), error bars indicate standard errors. Chinese 4- and 5-year-olds outperformed British 4- and 5-year-olds respectively, with no differences in performance between the 3-year-olds, indicated by the significance lines. Data on the British children has been published in Miller et al. [52].
Table 2.
Generalized linear mixed models for Experiment 2.
Table 3.
Age effect on inhibitory control and delay choice tasks.
Table 4.
Correlations and descriptive statistics for inhibition control and delay choice tasks.