This document provides summaries of several articles related to mental retardation. It discusses definitions, causes, assessment and treatment of mental retardation. Some key topics covered include adjustment and attitudes of parents of children with mental retardation, teaching mathematics to students with mild-to-moderate mental retardation, chromosomal abnormalities associated with mental retardation from an Indian perspective, and using various teaching methods and media to improve skills in children with mild mental retardation.