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.
Bicuspid aortic valve disease is an abnormal formation of the aortic valve (the valve connecting the aorta to the heart).Approximately 2% of the population has a bicuspid valve. Often patients will have an awareness of its presence, as they were told they have a murmur during a routine physical examination.icuspid aortic valve disease is an abnormal formation of the aortic valve (the valve connecting the aorta to the heart).