Social Science - Philosophy,
DV: T Externalizing problem behaviors
DV: T# Externalizing problem behaviors, T# internalizing problem behaviors (using T1~T4) (T1: fall kindergarten, T2: Spring Kindergarten, T3: Fall Grade1, T4: Spring Grade 1)
Control variables (time-invariant): gender, ethnicity, parent education, family income, and SES
IV: if a child has participated in Head start program or not, and age of participated in Head Start Program
Name of variables
Gender: ...