RM: Control of variables Flashcards
(9 cards)
Confounding variables, description.
They vary systematically with the IV- therefore any change in the DV may be due to a confounding variable instead of the IV.
Extraneous variables- description.
Nuisance variables which make it harder to detect a change in the DV.
They do not vary systematically with the IV and therefore do not act as an alternative IV but may have an effect on the dependent variables.
Description- mundane realism.
The extent to which features of a study mirror the real world!
Generalisation?
The point of realism in psychological research is to be able to generalise the results beyond the particular unique research setting - in particular to be able to understand behaviour in everyday life!
Validity, description.
Legitimacy, genuineness
Internal validity- description
Enhanced by control of confounding variables- hgih mundane realism.
External validity- description
Generalising to other situations ( ecological validity), people (population validity) and historical periods ( historical validity)
What does mundane realism refer to?
Refers to how an experiment mirrors the real world.
What is the difference between a confounding and an extraneous variable?
A confounding variable tends to be a flaw in the set up of the experiment. For example, testing two independent groups at different times of the day, could also affect your DV.
An extraneous variable is an ‘extra’ quality participant’s carry with them, which can have an affect on their results. For example, a persons personality type, age etc.
