Answer to Question 1
Answer should include: Baselines begun after the independent variable has been applied to previous behaviors, settings, or subjects cannot be used to verify predictions based on earlier tiers of the design. Only baselines begun while the earlier behavior is still under baseline conditions can be used to verify predictions made for earlier behaviors.
Answer to Question 2
Answer should include: A multiple probe design is used to analyze the relationship between an independent variable and the acquisition of a successive approximation or a sequence of behaviors. Intermittent measures, or probes, are taken on all behaviors at beginning of experiment. Probes are then taken each time the participant has achieved mastery of one of the behaviors or skills in the sequence. Just prior to instruction on each behavior, a true baseline measure is taken until stability is achieved.