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.
Aortic valve disease is a condition in which the valve between the main pumping chamber of your heart (left ventricle) and the main artery to your body (aorta) doesn't work properly.Aortic valve disease sometimes may be a condition present at birth (congenital heart disease), or it may result from other causes.Types of aortic valve disease include: 1  Aortic valve stenosis. 2  In this condition, the aortic valve opening is narrowed.3  This narrowing prevents the valve from opening fully, which obstructs blood flow from your heart into your aorta and the rest of your body. 4  Aortic valve regurgitation.ortic valve disease sometimes may be a condition present at birth (congenital heart disease), or it may result from other causes. Types of aortic valve disease include: 1  Aortic valve stenosis. 2  In this condition, the aortic valve opening is narrowed.