Sibling Ideological Influence: A Natural Experiment

Siblings are a potentially important source of political socialization. Influence is common, especially among younger siblings and those close in age, who tend to interact most frequently. This suggests that the positions of an individual's next-older sibling will hold particular sway. In policy questions with a gender gap, then, those whose immediately older sibling is a sister will be more likely to absorb the typically female preference; those born after a brother, the male preference. Evidence from the United States shows that this pattern holds for general left–right orientation as well as for the preferred balance between public and private sectors. Just as American women are more likely to lean left and to see government intervention positively, so are Americans whose next-older sibling is female.