Dassanayake, T.L.; Ariyasinghe, D.I.; Baminiwatta, A.; Hewawasam, C.
(Psychology Press, 2024)
OBJECTIVE The aim of this study was to create age-stratified norms for the Raven's Standard Progressive Matrices (SPM) for Sri Lankan adults.METHODS A sample of 610 adults (age: 18-72 years; education: 1-19 years), underwent ...