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.
You may find that your tongue swells if you accidentally bite it or burn your tongue with hot liquids or hot foods. Dental appliances also can irritate your tongue and cause it to swell. Tobacco is yet another irritant that can cause tongue pain and swelling. Tongue cancer. Tongue cancer is a common cancer of the head and neck â more than 10,000 new cases are diagnosed in men and women in the United States each year.