Controlling Variables in Research

A modern classroom setting with students engaging in a research project, illustrating concepts of experimental design and variable control, with charts and graphs visible.

Controlling Variables in Research

Test your knowledge on how researchers control extraneous variables in studies. This quiz covers essential concepts like demand characteristics, experimenter bias, and various techniques used in research design.

  • Multiple choice questions
  • Short answer definitions
  • Checkbox selections for identifying variables
10 Questions2 MinutesCreated by AnalyzingData274
How do researchers control extraneous variables?
By increasing the ecological validity of the study
By standardizing the procedure of the study
By lowerinv demand characteristics of researcher
Define Demand Characteristics
The use of single-blind technique in controlling variables is to..
Avoid researchers from conducting unethical studies
Avoid participants’ withdrawal from the study
Avoid participants from behaving unnaturally
Researchers often use ‘random’ design when trying to control variables such as
Age, status and money
IQ, motivation and memory
Motivation, hair colour and favourite food
Extraneous variables can be (pick two only)
Low in validity
Participant variables (IQ, mood etc)
Confounding variables
Situational variables (temperature of the room, lighting etc)
Poor research planning
Bias during research such as experimenter bias can be controlled by
Matched-pairs design
Participant variables
Randomization
What is meant by ‘double-blind’ technique?
Identify a way in which researcher could use a double-blind technique to avoid experimenter effects
By telling participants the aim of the study and asking a friend to run part of the study without knowing the nature of the study
By not telling participants and an observer/a friend the actual aim or the nature of the study
By not telling the participants, but the observer must know the aim
Confounding variables occur during the study when...
Lab experiments usually ‘standardised’ the procedure of their study. Why? (Pick 3 answers)
To increase the ecological validity of the study
To increase reliability of the study
To ensure consistent measurement is done
To ensure all sort of biases and extraneous variables could be controlled
The study will be replicable to test for further consistency
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