Question

question 18 (1 point)ethics review committees are typically composed ofprofessionals only.samples of research participants from the population under study.both professionals and samples of research participants.both professionals and laypersons.laypersons only.question 19 (1 point)agreement to participate in a study following disclosure of information about its purposes and potential risks and benefits is calledreplication.critical thinking.informed consent.ethics review.confidentiality.

Explanation:

For Question 18: Ethics review committees (like IRBs) are structured to have diverse perspectives, including relevant professionals (e.g., researchers, clinicians) and laypersons (community members without direct professional ties to the research) to ensure balanced ethical oversight.
For Question 19: This is the standard definition of informed consent, which requires researchers to share all key study details so participants can make a voluntary, informed choice to participate.

Answer:

Question 18: both professionals and laypersons.
Question 19: informed consent.