What are some methods of control in experiments?

Elimination: Removal of the extraneous variable (e.g. noise)

Constancy: Keeping the extraneous variable constant between two or more conditions (e.g. equal levels of noise)

Counter-balancing: Controlling variables that vary over time (e.g. practice or fatigue) by altering the conditions so that the variables have an equal effect on both conditions

Randomisation: Extraneous variables are varied unpredictably (e.g. random number generator)

Single-blind: Range of techniques used to prevent the demand characterstics influencing the results. Participant is not told which condition (control or experimental) they are placed in

Double-blind: Experimenter is kept in ignorance until after the data has been collected so that his/her bias’ and expectations don’t influence the results.

AP
Answered by Alice P. Psychology tutor

5031 Views

See similar Psychology IB tutors

Related Psychology IB answers

All answers ▸

What are some models that I can use for critical thinking?


Explain, using examples, functions of two hormones in human behavior


Explain one cultural dimension in the sociocultural approach using one study to support your answer


What is the difference between qualitative and quantitative data?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences