Return to: Children’s Social Behavior in Relation to Participation in Mixed-Age or Same-Age Classrooms

Appendix. Coding System for Predictive Variables.

Mixed- or same-age grouping

1 mixed
2 same

Child’s ethnicity

1 minority
2 white

Socioeconomic status

1 low-income
2 middle-income

Child’s sex

1 male
2 female

Child has choice in activity

1 frequently
2 sometimes
3 not usually
4 no

Number of children in class

On a continuum of 20–29

Activities available in class on a weekly basis

1 1–4
2 5–8
3 9–12
4 12

Frequency of opportunities to work in small groups per week

1 frequently
2 often
3 sometimes
4 never

Grade

1 first
2 second
3 third
4 fourth
5 fifth

Staff number per class

1 1
2 2

Number of years teacher has taught

On a continuum

Teacher’s degree

1 BA
2 BA+
3 MA
4 MA+

Teacher’s age

1 22–30
2 31–45
3 46–55
4 56+

Aggression subscale

1 never
2 sometimes
3 often
4 very often

Prosocial subscale

1 never
2 sometimes
3 often
4 very often

Friendship subscale

1 never
2 sometimes
3 often
4 very often