AS RESEARCH METHODS- reliability- validity Flashcards Preview

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Flashcards in AS RESEARCH METHODS- reliability- validity Deck (23)
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1
Q

what does validity refer to?

A

soundness or legitimacy of a measurement or study

2
Q

what should you do in an exam if asked to define validity|?

A

explain what both internal and external validity are

3
Q

what is external validity?

A

the extent to which the results of a study can be generalised to other situations and people

4
Q

what is internal validity?

A

whether the researcher tested what he/she set out to test

5
Q

what are the other types of validity? (4)

A

mundane realism, experimental realism,ecological validity, population validity

6
Q

what is mundane realism?

A

the extent to which features of a study mirror the real world

7
Q

what is experimental realism?

A

the extent to which ps believe in the experimental set up and so will behave naturally

8
Q

what is ecological validity?

A

the extent to which the research setting where the experiment took place mirrors the real world and therefore whether the study can be generalised to the real world

9
Q

what is population validity?

A

whether or not the sample used in the study is representative of the wider population e.g student not necc rep adults

10
Q

what is meant by threats to validity?

A

things that might reduce the validity of the study

11
Q

what are the threats to validity? (4)

A

controlled setting/contrived research setting
demand characteristics
extraneous variables
social desirability bias

12
Q

what is a dc?

A

a cue that makes p aware of way in which experimenter expect them to behave leading to unnatural b

13
Q

what is a ev?

A

any variable other than independent variable that might effect d variable e.g time of day ,temp etc

14
Q

what is a social desir?

A

p change behaviour in order to appear in a better light

15
Q

what is reliability?

A

concerns consistency of results

16
Q

what is external reliability?

A

measure of consistency over several occasions e.g should find same results if study replicated -e.g test retest method

17
Q

what is internal reliability?

A

extent to which something is consistent with itself e.g all questions on questionnaire should measure same thing

18
Q

what is the test-re test method?

A

repeating study on another occassion

19
Q

what is reliability in experimental research?

A

ability to replicate study and obtain the same results using test retest method

20
Q

what is reliability in observational techniques?

A

assessed by measuring inter rater reliability

21
Q

what is reliability in self report?

A

internal reliability can be assessed using split half method which involve comparing persons performance on 2 halves of a test t check that they match up. to assess external the result should repeat after a period of time

22
Q

what is inter rater reliability?

A

extent to 2 observers find same results. correlations should be higher than 0.8

23
Q

potential threats to reliability are?

A

ambigious qs in q /i

confusing behavioural categories in observation