A group of preschool-age children are enrolled in a study that plans to follow them over time in order to assess behaviors and other characteristics that may predict later development of schizophrenia. This is an example of a(n) design.
1) longitudinal
2) cross sectional
3) experimental
4) survey

1. Longitudinal.

Explanation:

Longitudinal Design or study is a type of research in which researchers study a group of participants over an extended period of time.

In the given case, a group of preschool-age children are enrolled to study their behavior and other development over a period of time. This study is performed so that predicted behavioral patterns could be studied in schizophrenia development.

So, the correct answer is option 1.

answer; i believe that the correct answer is ( rivers);