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.
In addition to allergic reactions to medications, allergic reactions to other substances â such as foods or bee stings â can cause swelling. In food allergies and bee sting allergies, the tongue can swell, but it is less common to have a swollen tongue than it is to have a swollen throat or lips. Infection. Another possible cause of a swollen tongue is an infection deep inside the tongue or in the floor of the mouth.