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  • Howida Sirelkhatim Abdalrahim Toto (a1), Davide Piffer (a2), Omar Haroun Khaleefa (a3), Rogai Al-Sayed Al-Tayeb Bader (a3), Salaheldin Farah Attallah Bakhiet (a4), Richard Lynn (a5) and Yossry Ahmed Sayed Essa (a4)...

Intelligence was assessed using the Standard Progressive Matrices in 316 MZ and 550 same-sex DZ twins with a mean age of 10 years in Sudan. Heritability was estimated at 0.172 and shared environmental influences at 0.596.

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Journal of Biosocial Science
  • ISSN: 0021-9320
  • EISSN: 1469-7599
  • URL: /core/journals/journal-of-biosocial-science
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