In the end this research was approved by the ethics committee. One thing that is important to bear in mind is that obtaining approval involves a dialogue between the researcher(s) and the relevant ethics committee. This dialogue invariably involves an interpretation of the principles and a negotiation of what can be regarded as acceptable research conduct.
This activity focused on three key ethics principles, namely the right to withdraw, informed consent and the wellbeing of participants. However, ethics panels evaluating real research need to take into consideration a more complex set of issues.
Here is a PDF summary of the activity to print or save in your files.