(Super-)cultural clustering explains gender differences too.

Area of Science:

• Evolutionary anthropology
• Behavioral ecology
• Human evolution

Background:

• Phenotypic variation is influenced by ecological pressures and cultural adaptations.
• Social learning, particularly gendered transmission, plays a role in shaping traits.
• Understanding sex differences requires examining cultural influences within ecological contexts.

Purpose of the Study:

• To investigate how cultural adaptations to ecological problems drive phenotypic variation.
• To propose gendered social learning as a key cultural adaptation.
• To explain the paradox of increased sex differences in more gender-equal societies.

Main Methods:

• Theoretical framework integrating cultural evolution and behavioral ecology.
• Analysis of social learning mechanisms and their link to ecological challenges.
• Examination of how environmental novelty impacts cultural adaptations.

Main Results:

• Gendered social learning is identified as a cultural adaptation to ecological problems.
• In evolutionarily novel environments, this adaptation leads to arbitrary-gendered outcomes.
• A paradoxical pattern emerges: larger sex differences in societies with greater gender equality.

Conclusions:

• Cultural adaptations can generate complex and seemingly paradoxical phenotypic patterns.
• Gendered social learning, influenced by ecological factors, contributes to sex differences.
• Societal gender equality, in novel environments, can amplify, not reduce, certain sex-based phenotypic variations.