You are using an ABA (i.e.,reversal)design to evaluate whether or not a new miracle drug improves retention for psychological material.Four to six hours after introducing the drug treatment,performance returns to levels that were equivalent to those observed before the treatment.You are likely to conclude that:
A) the treatment is confounded with order.
B) there are substantial carryover effects from the drug.
C) an unknown factor was responsible for the improvements in performance.
D) the drug has the desired effect on retention.

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The Answer of You are using an ABA (i.e.,reversal)design to evaluate whether or not a new miracle drug improves retention for psychological material.Four to six hours after introducing the drug treatment,performance returns to levels that were equivalent to those observed before the treatment.You are likely to conclude that:
A) the treatment is confounded with order.
B) there are substantial carryover effects from the drug.
C) an unknown factor was responsible for the improvements in performance.
D) the drug has the desired effect on retention.

You Are Using an ABA (I