Mary discovered that her 7-year-old daughter,Maggie,was especially motivated by money.Mary began a reinforcement program whereby Maggie earned 5 cents every time she brushed her teeth.A month later,Mary instituted a payment schedule of 10 cents every time Maggie went to bed on time without complaining.Once these behaviours were firmly established,Maggie began earning money for every book she read.What kind of single-subject design did Mary employ?

Question

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Mary employed an across behaviours multiple baseline design because she started by reinforcing one behaviour (brushing teeth) and then added another behaviour (going to bed on time) once the first behaviour was firmly established. Later on, she added a third behaviour (reading books) once the other two behaviours were firmly established. This design allowed her to demonstrate the effectiveness of the reinforcement program across multiple behaviours.

Mary Discovered That Her 7-Year-Old Daughter,Maggie,was Especially Motivated by Money