Research suggests that when two siblings have similar personalities, this similarity is thought to be the result of:

Question

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Research suggests that the similarity in personality between siblings is primarily influenced by genetics. Studies have found that identical twins, who share all of their genes, are more similar in personality than fraternal twins, who share only 50% of their genes. This suggests that genes play a significant role in shaping personality traits. While parenting style, socioeconomic status, and schooling can also have an impact on personality development, these factors are generally considered to be less influential than genetics.

Research Suggests That When Two Siblings Have Similar Personalities, This