The essence of Genetics lies in the understanding of the concepts of Central Dogma of Molecular Biology. Although these ideas are fundamental to the field, they are notoriously difficult to understand and visualize. While simulation-based instructional materials are found to improve the teaching-learning process in science education, little has…

The paper consists of a review of 24 studies on mental retardation published in two Soviet journals between 1970 and 1980. An introductory section focuses on the theoretical framework for mental retardation research in the Soviet Union with a differentiation between oligophrenics (who have organic brain damage) and the intellectually backward (or…

The relatively long-term effects of temperament on classroom achievement were studied in a cohort of elementary students while accounting for variation in cognitive ability, previous achievement, and gender. The existence of long-term effects would support the hypothesis that indirect genetic effects on learning are mediated by temperament.…