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<p>Genetic quality may be expressed through many traits simultaneously, suggesting a phenotype-wide fitness factor. In humans, intelligence has been positively linked with potential indicators of genetic quality, including anthropometric characteristics. We conducted an exploratory study of the relationships between fluid intelligence (assessed by the Raven Advanced Progressive Matrices Test – Short Form), sexual promiscuity (assessed by the Sociosexuality Orientation Inventory – Revised), and two measures of male muscularity and body morphology—handgrip strength (HGS) and shoulder-to-hip ratio (SHR)—in a sample of 41 men (ranging 18 to 33 years; <i>M</i> = 23.33; <i>SD</i> = 3.60). We detected statistically significant positive relationships between intelligence and HGS and SHR in young men (but no significant correlations between HGS and SHR). In addition, sexually promiscuous behaviors were negatively associated with intelligence and SHR. We discuss these preliminary results in relation to a phenotype-wide fitness factor and address several limitations of this study. </p>

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Associations Between Intelligence and Anthropometric Traits: Evidence from a U.S. Sample of Young Men

  • 期刊论文

  • 发表日期：

    2026年3月10日

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  • Tara DeLecce,
  • Gavin S. Vance,
  • Bernhard Fink,
  • Todd K. Shackelford

摘要

Genetic quality may be expressed through many traits simultaneously, suggesting a phenotype-wide fitness factor. In humans, intelligence has been positively linked with potential indicators of genetic quality, including anthropometric characteristics. We conducted an exploratory study of the relationships between fluid intelligence (assessed by the Raven Advanced Progressive Matrices Test – Short Form), sexual promiscuity (assessed by the Sociosexuality Orientation Inventory – Revised), and two measures of male muscularity and body morphology—handgrip strength (HGS) and shoulder-to-hip ratio (SHR)—in a sample of 41 men (ranging 18 to 33 years; M = 23.33; SD = 3.60). We detected statistically significant positive relationships between intelligence and HGS and SHR in young men (but no significant correlations between HGS and SHR). In addition, sexually promiscuous behaviors were negatively associated with intelligence and SHR. We discuss these preliminary results in relation to a phenotype-wide fitness factor and address several limitations of this study.