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Toddler Study
- We are currently in the follow-up phase of this study and are not enrolling any new families with 2-year-olds.
- Age 3 follow-ups were finished in January 2026.
- We have completed the first two years of 1st and 2nd grade follow-ups and will be continuing to see 1st and 2nd graders during the school year through 2029.
- If you have finished our age 3 follow up and would like to update your contact information for the school age follow-up, please fill out this survey form.
- During the summer of 2026, we began a new follow-up study for 3rd and 4th graders. The first year of data collection for these grades will occur during the 2026-2027 school year.
Preschool Study
- Enrollment of 4-year-olds is complete
- The age 5 follow ups were completed in the spring of 2026.
- During the summer of 2026, we began a new follow-up study for 3rd and 4th graders. The first year of data collection for these grades will occur during the 2026-2027 school year.
