A Comparative Study of the Behavioral Problems of Children from Single-Child Families and Two-Child Families

This research is a cause-oriented and comparative study. It is concerned with the degree of internalizing and externalizing behavioral problems of the primary school students from single child-families and those from two-child families in Yazd. The research was conducted on 308 students in a grade ranging of first to the sixth primary school. They study in schools in Yazd including (163 from single-child families and 145 from two-child families and are a compiled by their parents. They were randomly selected through a cluster-sampling method. A child behavior checklist (CBCL) and demography information form were used in the survey. The results of the one-way analysis of Variance Test show confirm the significance of the difference in the average of behavioral problems -including internalizing and externalizing problems-between those from single- child families and those from two-child families. The findings show that the average of the behavioral problems including internalizing and externalizing problems- which those from two-child families have is lower and their conditions are much better than those from single- child families.