Dr Cross Is Implementing an A-B-A-B Design

question 18

Multiple Choice

Dr. Cross is implementing an A-B-A-B design. Which of the following scenarios best describes an A-B-A-B design?

• A) Dr. Cross assesses baseline anxiety and then introduces video clips of baby animals and then reassesses anxiety.
• B) Dr. Cross introduces video clips of baby animals and then assesses anxiety levels.
• C) Dr. Cross assesses baseline anxiety and then introduces video clips of baby animals, then reassesses anxiety and then the video clips of baby animals are ceased and anxiety levels are assessed again.
• D) Dr. Cross assesses baseline anxiety and then introduces video clips of baby animals, then reassesses anxiety, then the video clips of baby animals are ceased and anxiety levels are assessed, followed by reintroduction of video clips of baby animals and assessment of anxiety levels.

---

Definitions:

Types

Refers to various categories or classifications of things or phenomena based on shared characteristics.

HIV

Human Immunodeficiency Virus, a virus that attacks the immune system and can lead to AIDS if not treated.

Human Body

The physical substance of a person, including the bones, flesh, and organs.

Mononucleosis

An infectious disease often caused by the Epstein-Barr virus, characterized by fever, sore throat, and swollen lymph glands.