The A-B-A withdrawal is a science-based evidence research that answers imperative questions of whether introducing a treatment or intervention will produce desired results or not (Todd Haydon, G. Richmond Mancil & Christopher Van Loan, 2009). This is an approach in research that is used in education, counseling, speech pathology, and both human and non-human behavioral research.
Pertinent to the issue at hand, A-B-A-B Design will come handy. This design represents an attempt to measure a baseline (A), a treatment measurement (B), withdrawal of treatment (A) and reintroduction of treatment (B). In other words, the first part (A-B) concerns establishing the application of treatment and measuring its implications while the second part (B-A) measures what happens when the treatment is removed and then applying the treatment to measure the change (Todd Haydon, G. Richmond Mancil & Christopher Van Loan, 2009). This design is important as it helps researchers understand how important treatment is and how long it will last if it is withdrawn. For this case, it will last longer if the subject is taken on the two dimensions than on one only.
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Hypothetically, this method will be applied to understand the impact of introducing technology in the classroom versus using conventional methods of learning on second-grade students. Under this design, the baseline (A) will be established by allowing the students to read from their textbook and then their reading comprehension be tested. The same group will be subjected to read with a computer and be tested. This is the (B) phase. This will be tabulated, for example as 20% and 50% for A and B respectively. The procedure will be allowed to settle for a day and repeated the next day and results measured again; assume that the results will be 30% and 70% (A-B). This infers that training with a computer produces good results as compared to conventional forms of reading.
Reference
Todd Haydon, G. Richmond Mancil, & Christopher Van Loan. (2009). Using Opportunities to Respond in a General Education Classroom: A Case Study. Education and Treatment of Children, 32(2), 267-278. http://dx.doi.org/10.1353/etc.0.0052
