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Related Experiment Video

Updated: Jun 27, 2026

Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers

Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers

Published on: March 14, 2018

The effect of classroom environment on problem behaviors: a twin study.

Lisabeth Fisher DiLalla¹, Paula Y Mullineaux

¹Southern Illinois University School of Medicine, Department of Family and Community Medicine, Carbondale, IL 62901, USA. ldilalla@siu.edu

Journal of School Psychology

|December 17, 2008

Summary

Placing twins together in the same classroom may reduce behavioral problems. Teacher ratings showed similar behavior in classroom-separated twins, indicating the classroom environment

Related Experiment Videos

Last Updated: Jun 27, 2026

Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers

Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers

Published on: March 14, 2018

Area of Science:

Developmental Psychology
Behavioral Genetics

Background:

Child behavior problems stem from genetic and environmental factors.
The classroom environment is a significant environmental influence on behavior.
Previous research has not fully explored the impact of classroom placement on twin behavior.

Purpose of the Study:

To investigate the influence of classroom environment on the behavioral ratings of monozygotic twins.
To compare teacher and parent ratings of twin behavior when twins are together versus separated in classrooms.

Main Methods:

Studied 1941 pairs of monozygotic twins.
Compared teacher ratings of problem behaviors for twins in the same versus different classrooms.
Analyzed parent ratings of twin behavior in relation to classroom placement.

Main Results:

Twins in the same classroom were rated more similarly by teachers on problem behaviors than separated twins.
Teacher ratings indicated the classroom environment influences behavioral similarity.
Parents reported lower problem behaviors for twins placed in the same classroom.

Conclusions:

Classroom environment plays a crucial role in shaping twin behavior.
Consideration should be given to allowing parents to decide on keeping twins together in early school years.
The findings suggest environmental interventions within the classroom can impact behavior.