Teenagers find out to be subject in psychology experiments. When they arrive they are told interviewers were running late . And were left waiting outside. The experimenters Have a sign next to the entry door that says do not open the door under any circumstances. Some subjects are outside Alone and others are in Pairs treatments are being compared. Will the subject open the door? The teenagers agreed to take part in unspecified experiment , And The true nature of the experiment is explain to them afterwards

Does this mean the requirement of informed consent