Treatment is indicated in patients with Pagetâs disease of bone with elevations in serum alkaline phosphatase of two times or higher than the upper limit of the age-specific normal reference range, or those who are symptomatic, or those at risk for complications from their disease [see Clinical Studies (14.5)].
experimenter bias - (psychology) bias introduced by an experimenter whose expectations about the outcome of the experiment can be subtly communicated to the participants in the experiment. number of conclusions drawn from the reviewed studies were unfounded because the experimenters inferred causation from correlation, lacked standardized measures, had poor sampling procedures, failed to control for threats to validity, had very limited assessment of anxiety, had.
Some bias in research arises from experimental error and failure to take into account all of the possible variables. Other bias arises when researchers select subjects that are more likely to generate the desired results, a reversal of the normal processes governing science. Bias is the one factor that makes qualitative research much more dependent upon experience and judgment than quantitative research.