Oskar and Elias Are Biological Brothers Who Were Born Three

Oskar and Elias are biological brothers who were born three years apart and were raised in a traditional family environment.Throughout their lives together, they have fought over many different issues.Now that both are nearing puberty, their parents are worried about whether their sibling rivalry will escalate.Based on current research, what should their parents expect will happen in the relationship between their sons?

A) It will be filled with rising intense rivalry and become a source of major family stress and conflict.
B) It will become more egalitarian, and competition or rivalry will most likely decline.
C) It will continue in much the same way; the nature of sibling relationships does not change after the elementary school years.
D) The brothers will likely begin to ignore or isolate themselves from each other, which will decrease tension in the family.