Distribution of results in all EF tasks showing the number of children who failed, succeeded partially and succeeded fully in the Snack Delay task.

<p>Distribution of results in all EF tasks showing the number of children who failed, succeeded partially and succeeded fully in the Snack Delay task.</p

Relationships between assessed executive function task scores.

<p>Relationships between assessed executive function task scores.</p

CHYLD study STROBE flow chart.

<p>CHYLD study STROBE flow chart.</p

Behavioral failures and EF task scores for children whose EF assessment was conducted in the first half of the assessment or last.

<p>Behavioral failures and EF task scores for children whose EF assessment was conducted in the first half of the assessment or last.</p

Maternal and infant characteristics of participants.

<p>Maternal and infant characteristics of participants.</p

Distributions of those children who were tested at the beginning of the assessment and those children who were tested at the end of the assessment period.

<p>Higher scores are associated with better performance.</p

Executive function scores for the cohort and girls and boys for high, medium and low groups of household income, neighbourhood deprivation and maternal education.

<p>Executive function scores for the cohort and girls and boys for high, medium and low groups of household income, neighbourhood deprivation and maternal education.</p

Assessed EF tasks in order of presentation, showing domains assessed and scoring.

<p>Assessed EF tasks in order of presentation, showing domains assessed and scoring.</p