Validity

HideShow resource information
Preview of Validity

First 162 words of the document:

Psychology unit 4 research methods
Validity
Internal validity- how much the experiment is testing what it is supposed to be
investigating.
Extraneous variables- affect the internal validity
- Situational- temperature, instructions, time of day
- Participant- intelligence, age, gender
- Demand characteristics- reduced using a single blind design
(participant doesn't know the aim of the study)
- Investigator effects- reduced by using a double blind design
(participant and investigator don't know the real aim of the
experiment)
External validity- accuracy of generalising findings to other situations
Ecological validity- the artificial setting of a lab experiment alter the
behaviour of the participants so that in real life they may have behaved
differently
Population validity- if the sample is biased then it won't represent the
target population and the results won't be able to be generalised to the
whole target population

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all resources »