Normative data for Raven's Coloured Progressive Matrices scale in Yemen

Area of Science:

• Psychometrics
• Developmental Psychology
• Cross-Cultural Psychology

Background:

• Standardization of psychological assessments is crucial for accurate cross-cultural comparisons.
• The Coloured Progressive Matrices (CPM) is a widely used non-verbal intelligence test.
• Limited data exists on CPM performance among Yemeni children.

Purpose of the Study:

• To establish normative data for the Coloured Progressive Matrices (CPM) in Yemen.
• To investigate age-related performance differences in Yemeni children using the CPM.
• To compare the performance of Yemeni children to British norms.

Main Methods:

• A standardization sample of 986 children aged 6 to 11 years in Yemen.
• Administration of the Coloured Progressive Matrices (CPM).
• Statistical analysis comparing Yemeni sample performance to British IQ norms (mean=100, SD=15).

Main Results:

• Younger children in the Yemeni sample performed better than older children relative to British norms.
• No significant sex differences were observed in the means or variability of scores.
• The Yemeni standardization sample achieved an average IQ of approximately 81 (SD=15) relative to British norms.

Conclusions:

• The study provides essential normative data for the CPM in Yemen.
• Findings suggest developmental differences in cognitive performance relative to international standards.
• The results highlight the need for culturally appropriate interpretation of intelligence test scores.