One Way in Which Experimenter Expectancy Effects Can Be Manifested

Multiple Choice

One way in which experimenter expectancy effects can be manifested is in errors in recording data. What is the best way to control this?

A) do not use a dependent variable that has to be measured numerically
B) do not use a dependent variable that has to be measured
C) automate the data collection as much as possible
D) use a panel of students to make the observations of the dependent variable