9British Education Research Association.Revised Ethical Guidelines for Educational Research (2004) [EB/ OL ] .http ://www.bera.ac.uk/publications/guidelines/, 2010-12 - 27.
10American Psychological Association.Ethical princi- ple of psychologists and code of conduct[EB/OL].http://www. apa.org/ethics/code/index.aspx,2010-12-27.