According to the APA's IRB Guidelines, Participants in Experiments Must

Multiple Choice

According to the APA's IRB guidelines, participants in experiments must be fully informed

A) that they may or may not receive an active treatment.
B) that they will not receive active treatment until the research study is over.
C) if they are in the placebo group or the treatment group.
D) only that they are participants in a research study and that they can quit at any time.