Methods (Edexcel A-Level Psychology): Flashcards
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Practise the cards
10 cards from this deck
Correlational research purpose
Correlational research purpose
Measures 2 variables to determine if they're related
Co-variables
Co-variables
Two variables measured in correlational research
Positive correlation
Positive correlation
Both co-variables increase together
Negative correlation
Negative correlation
One variable increases whilst the other decreases
Main limitation of correlation
Main limitation of correlation
Cannot establish causality or which variable causes the other
Third variable problem
Third variable problem
Unmeasured variable might influence both co-variables
Spearman's rho test use
Spearman's rho test use
Inferential test for ordinal correlational data
Correlation coefficient range
Correlation coefficient range
Between +1 and -1, shows strength and direction
p ≤ 0.05 meaning
p ≤ 0.05 meaning
5% chance result is due to chance (95% confidence)
Critical value
Critical value
Statistical cut-off to determine if result is significant