Question

Explain how the experimenter can be an extraneous variable (e.g., experimenter characteristics and experimenter expectancies as it relates to Physiological ­experimenter characteristics including such aspects as age, sex, and race and Psychological ­experimenter attribute including such personality characteristics as hostility, anxiety, and introversion or extraversion.).

What are some ways to control experimenter effects?

Answer 1

Meaning of Extraneous variables :- Extraneous variables means to the variables in experiment which is out of control of en experimenter that's why its important to control this during experiment.

Ways to control experimenter effects :-

• With the use of Statistical method an experimenter can minimises the effect of extraneous variables. Like use of ANOVA.
• With, the help of Randomizations also an experimenter can minimises the effect of extraneous variables but this method is only useful in large sample.
• And with the help of experimental method also experimenter can minimises his variable issue.

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