The theory is considered  constructivist  , meaning that , unlike nativist theories ( which describe cognitive development as the unfolding of innate knowledge and abilities ) or empiricist theories ( which describe cognitive development as the gradual acquisition of knowledge through experience ) , it asserts that we construct our cognitive ...
Introduction. The population frequency of a bicuspid aortic valve is â0.9% to 1.36%, 1â3 with a 2:1 male:female ratio. It is likely that the presence of a bicuspid aortic valve has a genetic basis, with the pattern of transmission in some families suggesting an autosomal dominant pattern of inheritance.
Ascending aortic dilatation occurs more frequently and at a younger age in patients with bicuspid aortic valves (BAV) than it does in patients with normal trileaflet aortic valves (TAV). The clinical significance of the correlation between BAV and dilatation of the ascending aorta is based on 2 factors.First, BAV is the most common congenital cardiac abnormality, occurring in 0.46% to 1.37% of the population.he clinical significance of the correlation between BAV and dilatation of the ascending aorta is based on 2 factors. First, BAV is the most common congenital cardiac abnormality, occurring in 0.46% to 1.37% of the population.