Vandervert (1980/1988) described in scientific detail a simple, every day illustration of an operational definition in terms of making a cake (i.e., its recipe is an operational definition used in a specialized laboratory known as the household kitchen).andervert (1980/1988) described in scientific detail a simple, every day illustration of an operational definition in terms of making a cake (i.e., its recipe is an operational definition used in a specialized laboratory known as the household kitchen).
In addition, a swollen tongue can be caused by: 1  Hormonal disorders such as acromegaly. 2  Congenital disorders such as Beckwith Wiedemann syndrome. 3  Genetic disorders such as Down syndrome and hereditary angioedema. 4  Hypothyroidism, an underactive thyroid. 5  Poor vitamin B12 absorption. 6  Pituitary gland disorder.
Other causes of swollen tongue. Acromegaly which is the name of a hormonal disorder. The condition makes the body produce excessive growth hormone which results in the body tissues getting enlarged.Genetic disorders like the Down syndrome. Hypothyroidism (a thyroid that is not as active as it should be).ther causes of swollen tongue. Acromegaly which is the name of a hormonal disorder. The condition makes the body produce excessive growth hormone which results in the body tissues getting enlarged. Genetic disorders like the Down syndrome.