Answer:
the students have been informed they will receive something, but NOT which it is
Explanation:
Based on the information provided within the question it can be said that by signing the informed consent to participate form they have proof that the students have been informed they will receive something, but NOT which it is. Whether it is the actual medical treatment or the placebo, they will not know which it is, only the researchers will have access to that information.
I believe the answer is: <span>people's recall may easily be affected by misleading information.
Films and accidents tend to happen really fast and even the witness near the crime scene couldn't fully grasp how and why the situation happened.
As it turned out, when they're asked about the situation, they tend to filled in the blanks with made up personal's opinion or other people's misleading information.</span>
