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Dive into the research topics where Yossry Ahmed Sayed Essa is active.

Publication


Featured researches published by Yossry Ahmed Sayed Essa.


Journal of Biosocial Science | 2017

CORRELATIONS BETWEEN INTELLIGENCE, HEAD CIRCUMFERENCE AND HEIGHT: EVIDENCE FROM TWO SAMPLES IN SAUDI ARABIA.

Salaheldin Farah Attallah Bakhiet; Yossry Ahmed Sayed Essa; Amira Mahmood Mohsen Dwieb; Abdelkader Mohamed Abdelkader Elsayed; Afra Sulman; Helen Cheng; Richard Lynn

This study was based on two independent studies which in total consisted of 1812 school pupils aged 6-12 years in Saudi Arabia. Study I consisted of 1591 school pupils (609 boys and 982 girls) attending state schools, and Study II consisted of 211 boys with learning disabilities. Intelligence (measured using the Standard Progressive Matrices Plus for Study I and the Standard Progressive Matrices for Study II), head size and height were measured for the two samples. The results showed that intelligence was statistically significantly correlated with head circumference (r=0.350, p<0.001 for Study I and r=0.168, p<0.05 for Study II) and height (r=0.271, p<0.001 for Study I and r=0.178, p<0.05 for Study II).


Intelligence | 2017

A Negative Flynn Effect in Khartoum, the Sudanese capital

Edward Dutton; Salaheldin Farah Attallah Bakhiet; Yossry Ahmed Sayed Essa; Tahani Abdulrahman Muhammed Blahmar


Personality and Individual Differences | 2018

Understanding the Simber Effect : why is the age-dependent increase in children's cognitive ability smaller in Arab countries than in Britain?

Salaheldin Farah Attallah Bakhiet; Edward Dutton; Khalil Yousif Ali Ashaer; Yossry Ahmed Sayed Essa; Tahani Abdulrahman Muhammad Blahmar; Sultan Mohammed Hakami; Guy Madison


Personality and Individual Differences | 2017

A Negative Flynn Effect in Kuwait: The same effect as in Europe but with seemingly different causes

Edward Dutton; Salaheldin Farah Attallah Bakhiet; Yossry Ahmed Sayed Essa; Tahani Abdulrahman Muhammad Blahmar; Sultan Mohammed Hakami


Mankind Quarterly | 2015

A Study of the Colored Progressive Matrices in Kuwait

Salaheldin Farah Attallah Bakhiet; Nasser Sayed Gomaa Abdelrasheed; Richard Lynn; Yossry Ahmed Sayed Essa


Intelligence | 2018

A Flynn Effect in Khartoum, the Sudanese capital, 2004–2016

Edward Dutton; Salaheldin Farah Attallah Bakhiet; Habab Abdlahiy Osman; David Becker; Yossry Ahmed Sayed Essa; Tahani Abdulrahman Muhammad Blahmar; Richard Lynn; Sultan Mohammed Hakami


Personality and Individual Differences | 2019

A Flynn Effect in Kuwait, 1985–1998

Edward Dutton; Salaheldin Farah Attallah Bakhiet; Abdulkarim Hussein Alhossein; Yossry Ahmed Sayed Essa


Personality and Individual Differences | 2018

Brain drain in Syria's ancient capital: No Flynn Effect in Damascus, 2004–2013/14

Edward Dutton; Yossry Ahmed Sayed Essa; Salaheldin Farah Attallah Bakhiet; Hamada Ali Abdelmuti Ali; Shehana Mohammed Alqafari; Asma Saad Hamad Alfaleh; David Becker


Personality and Individual Differences | 2018

The Raven's test performance of South Sudanese samples: A validation of criticisms of the utility of Raven's among Sub-Saharan Africans

Edward Dutton; David Becker; Habab Abdlahiy Osman; Salaheldin Farah Attallah Bakhiet; Yossry Ahmed Sayed Essa; Hamada Ali Abdelmuti Ali; Shehana Mohammed Alqafari; Ali Hussin Mohammad Najmi Hamdi; Asma Saad Hamad Alfaleh


Personality and Individual Differences | 2018

Sex differences on Raven's Standard Progressive Matrices within Saudi Arabia and across the Arab world: Females' advantage decreases from childhood to adolescence

Edward Dutton; Salaheldin Farah Attallah Bakhiet; Guy Madison; Yossry Ahmed Sayed Essa; Mohammed Yahya Mohammed Rajeh

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Helen Cheng

University College London

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David Becker

Chemnitz University of Technology

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