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.
And Not Even Know It. Symptoms of gluten intolerance can be tricky to determine. Gluten intolerance, also called gluten sensitivity or Celiac Disease-when it's in its most severe form-can have symptoms that range from no symptoms to life threatening or debilitating chronic health problems and anywhere in between.