Students given cover story about recent experiment investigating sensory deprivation on brain function- conducted on 6 participants in Rome, spent time completely isolated, unable to see or hear anything, with extreme panic and had to be stopped. The students were told experimenters want to conduct similar study but awaiting ethical approval, they were told to write a statement to convince other students to participate in the experiment. If a participant believed the proposed research was unethical he/she could anonymously challenge it by putting a form in the mail.