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Volume 66, Number 3, 2026

Human Capital in Space and Time

Gerhard Meisenberg

Cognitive Ability Levels of 9th-Grade Students across Germany’s Federal States: IQB Education Trends 2009–2024 and the Role of Migration Background

Ronald Henss

Sex Differences in Personality Traits in Egyptian Adolescents

Ahmed M. Abdel-Khalek, Marwa Mahmoud Mady, Hiba Haj Omer, Mona Ghazi Sayegh and Mayssah A. El Nayal

Development and Validation of a Farsi Version of the Positive Self Scale

Mahboubeh Dadfar, Mohammad Bagher Saberi Zafarghand and David Lester

Did the Jizya – the Islamic Tax on Non-Muslims –Cause Selection for Intelligence? The Case of the Copts of Sudan

Edward Dutton

Effect of a Yoga Intervention on Well-being and Life Satisfaction among Late Adolescents: A Quasi-Experimental Study

Kavya Siripuram and Nidha Mishra

Mental Health Status and Its Sociodemographic Correlates among University Students in Odisha, India: A Cross-Sectional Study

Basanta Kumar Bindhani and Gayatri Prusty

Alcohol Consumption and Its Association with Health Traits: An Exploratory Study of the Oraon Scheduled Tribes of West Bengal

Bhubon Mohan Das, Tanaya Kundu Chowdhury and Subrata K. Roy

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Volume 66, Number 3, 2026

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