Flashcards
Research methods
Cards in this deck (21)
- 1Define nominal dataData that is in separate categories
- 2Define ordinal dataData that is ordered
- 3Interval dataWhen there are equal intervals on a measurement that is universally accepted
e.g. pH - 4Define ratio dataData is on a scale but has true zero
e.g weight, time, distance - 5What test would you use: Nominal data repeated measures design test of difference?Sign test
- 6What test would you use if the data is nominal and uses independent groups designChi-squared
- 7What test would you use: ordinal data correlationSpearman's Rho
- 8What test would you use if the data is ordinal and is not a correlation and does not use independent groups design?Wilcoxon T test
- 9What test would you use: ordinal data not a correlation independent groups designMann-Whitney U
- 10What test would you use: correlation interval dataPearson's R
- 11What test would you use: not a correlation independent groups design interval data a measure of differenceUnrelated T test
- 12What test would you use: interval data test of difference repeated measuresRelated T test
- 13What is a type 1 error?Optimistic error
False positive
significance level too high e.g- 10% - 14What is a type 2 error?Pessimistic error
False negative
significance level too low- e.g. 1% - 15What is external reliabilityBetween tests
Do we get the same results time after time using the same test/investigation - 16What is internal reliabilityWithin one test
Are the results consistent within a test. If we split the test in half, do both halve show the same thing? - 17How can reliability be improved?Pilot study
Taking more than one measurement
Standardising measurement - 18How can you imprve relaibilty in observations?By checking the effectiveness of observation categories
- 19How can we assess realibilty?1.Test re test
2.Split half
3.Inter rater - 20What factors effect the internal validity of a study>Demand characteristics
>Screw you effect
>Evaluation apprehension
>Confounding variable
>Extraneous variables
>Experimenter bias
>Operationalisation of variables. - 21—
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- A-Level Psychology Flashcards on Research methods, created by Lauren Burgess on 23/05/2016.
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- Lauren Burgess
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