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.
This type of experimenter bias resulting from subtle differences in face-to-face interaction has also been documented in other experimental contexts testingperception (Adair and Epstein 1968), pedagogy (Rosenthal and Jacobson 1968), andpriming effects from social psychology (Doyen et al.