Time - some researchers underestimate the time needed to carry out research.
Financial - may not have the money/funding to carry out the research. If you have no money, there is no possibility of carrying out the research.
Access to and nature of subject matter - Some area's may be seen as deviant or could be sensitive to some people.
Social characteristics of researcher - may be seen in a certain way from the research group; or could be biased towards the subject.
Social policy - governments employ researchers to assess these.
Social characteristics - needs to be suited to gain succesful results.
Nature of subject - may be sensitive e.g. domestic violence.
Informed consent - people involved must know they are being researched.
Deception - not giving the people involved all the information about the research being carried out.
Confidentiality - the research must not be able to be traced back to any individuals.
Protection From Harm - people involved may suffer from social consequences after the research has been carried out.
Privacy - some research may be intrusive.
Legality and immorality - the researcher should prevent themselves becoming involved in deviant situations.
Representativeness - the researcher will be generalising for the population.
Reliability - the research could be repeated and the same results could be obtained.
Validity - it must be show a true picture of what is being studied.
Interpretativists - people are active beings who act with intention and purpose; prefer valid and quantitative data
Positivists - "puppets on a string"; prefer qualitative and reliable data