Research Methods: Extraneous Variables & Controls COPY Flashcards
An unwanted variable other than the IV that COULD effect the DV is known as…
An Extraneous Variable
An extraneous variable is another variable that is not the…
Independent Variable that could effect the DV.
What can an extraneous variable do?
Effect the DV
Having an extraneous variable in a study would lower which type of validity?
Internal validity
If I had low control in my research, why may the internal validity of my study be lowered?
Due to an extraneous variable(s)
Name an example that is a situational factors of EVs
Task Difficulty
Situational Factors are things to do with the …
Environment
Give 2 examples of Participant variables that are EVs
Age
Gender
IQ
Eyesight
Hearing
EVs to do with the environment are what type of factors?
Situational Factors
EVs to do with the participant e.g. age or IQ is an example of what variables?
Participant Variables
Experimenter Variables are things to do with who?
The researcher
Give an example of an experimenter variable (keyterm)
Investigator effects e.g. tone of voice
Tone of voice & investigator effects are examples of what type of extraneous variable?
Experimenter Variables
When an extraneous variable is not controlled and DOES affect the DV - this is known as…
A confounding variable
A confounding variable is an extraneous variable that has …
NOT been controlled
What is the keyterm for participants changing natural behaviour due to clues given off by the researcher?
Demand Characteristics
A demand characteristic is where the researcher gives off … and the participant …
Clues
Changes their natural behaviour
What 2 H’s may a participant do to the researcher due to demand characteristics?
Help // Hinder
To control demand characteristics - who would we get?
Another researcher who does not know the aims