A double-blind study is one in which neither the participants nor the experimenters know who is receiving a particular treatment. This procedure is utilized to prevent bias in research results.
Total Dietary Fiber. Kidney beans contain more total dietary fiber per serving than the seven other most commonly consumed legumes in the United States, including black-eyed peas, chickpeas, lentils and black, navy, pinto and lima beans.
Black beans, also known as turtle beans, have the same amount of dietary fiber in every 1/2-cup serving as pinto beans: 6.1 grams. However, black beans have more of an equal distribution of soluble and insoluble fiber.