Behavior and Personality

Nature or Nurture?

Authors

  • Ipsita Mandal University of Illinois Urbana-Champaign Author

Abstract

While children share only 50% of their genes with each parent, the behavioral and personality resemblances often appear too strong to be coincidental. This paper explores the interplay between genetic inheritance and environmental influence in shaping human behavior. Through foundational behavioral psychology studies, scientists have demonstrated that genes play a significant role in behavioral traits, with heritability estimates suggesting that roughly 40% of behavioral variation is attributable to genetics. These findings are supported by Genome-Wide Association Studies (GWAS), which have identified specific genes linked to the Big Five personality traits. The paper also addresses the ethical implications of genetic manipulation in behavior-related therapies. While environment undeniably shapes personality, the evidence points to genetic influence as a dominant force in behavioral development. 

Author Biography

  • Ipsita Mandal, University of Illinois Urbana-Champaign

    lpsita is a freshman majoring in molecular and cellular biology. She became involved with Double Helix Digest to have a space to explore her dual interest in psychology and genetics and also discover other potential interests. Outside of Double Helix Digest, lpsita is also involved in research for Dr. Grosman's lab and volunteering as part of MEDLIFE. 

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Published

2025-07-14

Issue

Vol. 1 No. 1 (2025): Double Helix Digest at the University of Illinois Urbana-Champaign: An Undergraduate Journal Focused on Biology, Chemistry, and Related Fields

Section

Review Articles