The AB Design can be used to quickly assess the effects of an experimental variable. Its main disadvantage its inability to distinguish the experimental effect from possible confounds that might occur coincident with the change of condition.
ceÂ·liÂ·ac disÂ·ease. A disease occurring in children and adults characterized by sensitivity to gluten, with chronic inflammation and atrophy of the mucosa of the upper small intestine; manifestations include diarrhea, malabsorption, steatorrhea, and nutritional and vitamin deficiencies.
Gluten is a protein that is found in wheat, rye, barley, and oats. Many people are gluten intolerant, which is much like being dairy intolerant. Gluten intolerance can cause digestive problems, which creates inflammation in the abdomen, or gut. This inflammation can create acne. It is a chain reaction.