As with any aspect of Psychology that uses research studies, studies in the Biological Level of Analysis require the researcher to follow main ethical guidelines. While all the guidelines should be followed and respected, there are quite a few of which should be taken into extra careful consideration, although so is not always the case. To keep the research in ethical bounds, most psychologists agree to follow a certain code of ethics in order to abstain from inhumane experiments and studies. Deception, debriefing, and exploitation of animals in the use of invasive techniques, all come into play as significant considerations at this level.
Sometimes, however, it is not possible for researchers to always follow that code as it may affect their studies' results. For example in a Schachter and Singer (1962) experimental study –intending to challenge several theories of emotion- volunteers were recruited to receive a vitamin injection and informed that they would be participating in vision experiments. In reality, three groups received an injection of adrenaline, and those of a fourth were given placebo injections. Even worse, one of the groups was not told about even a single possible side effect. Despite a safe amount of adrenalin, fully informed consent could not be obtained since it could influence and alter the overall results, attributing to in fact a characteristic placebo effect. This gives researchers justification of their use of deception in an attempt to keep their work valid and controversy-free.
Researchers use placebos during studies to help them understand the effectiveness of a new drug or some other treatment on a certain condition. A placebo is a seemingly legitament medical treatment that is in fact fake and has no physical affect whatsoever on an individual; a response to which can be positive or negative. The relationship between the mind and body has