Table 1.

Study variables and timing of assessment by grade.

Variable	Preschool (54 months)	Grade 1	Grade 3	Grade 5
Sleep problems	√	√	√	√
Anxious/depressive symptoms	√	√	√	√
Social competence	√	√	√	√
Child depressive symptoms				√
School competence				√
Emotion regulation-teacher				√
Emotion regulation-mother				√
Risk-taking-mother				√
Risk-taking-child				√
COVARIATES
Negative affective temperament	√
Maternal depression	√*
Socio-economic status	√*
Marital quality	√
Firm parental control	√

^*Variable measured 6 times from 1 to 54 months.