Until they were 8 years old, how alike were the twins?

Conceptual Variable

Name
6575
Label
Until they were 8 years old, how alike were the twins?
as alike as tw o peas in a pod
of a normal family likeness
as alike as tw o peas in a pod
of a normal family likeness
Dataset Variable Valid Invalid Min First Quartile Median Third Quartile Max Mean StdDev
as alike as tw o peas in a pod
of a normal family likeness