Question 1
Question
Wilcoxon is used when testing for a difference.
Question 2
Question
Chi-square is used when testing for a correlation.
Question 3
Question
Spearman's Rho is used when testing for a difference.
Question 4
Question
Mann-Whitney is used when testing for a difference.
Question 5
Question
What statistical test is used when the data is correlational?
Answer
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Mann-Whitney
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Chi-Square
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Spearman's Rho
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Wilcoxon
Question 6
Question
What statistical test is used when the data is nominal?
Answer
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Spearman's Rho
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Chi-Square
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Wilcoxon
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Mann-Whitney
Question 7
Question
Which statistical test is used when there is an independent groups design?
Answer
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Wilcoxon
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Spearman's Rho
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Chi-Square
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Mann-Whitney
Question 8
Question
Which three of these apply to the Wilcoxon test?
Answer
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Data is ordinal, interval or ratio
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Data is nominal
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Used when testing for a difference
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Used with an independent groups design
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Used with a repeated measures design
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Used when the sets of data are related
Question 9
Question
Psychologists most often use a probability of 95%, so there's a 5% chance the results aren't significant.
Question 10
Question
Which type of error states that the results aren't significant, when in fact they are?
Question 11
Question
Which type of error states that the results are significant, when in fact they're due to chance?
Question 12
Question
A one-tailed test is used in conjunction with a directional hypothesis.
Question 13
Question
A two-tailed test can only be used with a non-directional hypothesis.
Question 14
Question
What is a directional hypothesis?
Answer
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A hypothesis that states the results will go a certain way, e.g. 'I predict women eat more food than men'
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A hypothesis that states there will be a difference, but doesn't say in which way, e.g. 'I predict there will be a difference between the amount that women and men eat'
Question 15
Question
What is a null hypothesis?
Answer
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States there will be a difference, but doesn't say which way results will go, e.g. 'I predict there will be a difference in the amount women and men eat'
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States the results will be due to chance, e.g. 'There will be no significant difference in the amount men and women eat'
Question 16
Question
Give two strengths of lab experiments.
Answer
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Greatest control over independent variable
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Higher ecological validity
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Few demand characteristics
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Control over ethics
Question 17
Question
Give two weaknesses of natural experiments.
Question 18
Question
Give one strength and one weakness of field experiments.
Answer
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Higher ecological validity than lab studies
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Full control over independent variables
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Less control over extraneous variables
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High risk of demand characteristics
Question 19
Question
Demand characteristics are where the participants become aware (either consciously or subconsciously) of the aims of the study, and alter their behaviour as such.
Question 20
Question
What are investigator effects?
Answer
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Anything the investigator does which has an effect on the behaviour of participants
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Where the participants become aware of the aims of the study and alter their behaviour as such
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Features of a research situation that alter the behaviour of participants, such as the time of day, temperature, noise levels etc.
Question 21
Question
What is the difference between participant effects and participant variables?
Answer
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Participant effects is a general term to acknowledge the fact that p's behaviour can be influenced by being in a study; participant variables are characteristics of individual p's that can influence the outcome of a study
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Participant effects are characteristics of individual p's that can influence the outcome of a study; participant variables is a general term to acknowledge the fact that p's behaviour can be influenced by being in a study
Question 22
Question
Single blind tests are where the participants don't know the aims of the study.
Question 23
Question
Double blind tests are where the neither participants nor experimenters know the aims of the study.
Question 24
Question
How can situational variables be overcome? (Give two answers.)
Answer
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Standardisation
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Double blind
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Counterbalancing
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Anonymity
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Matched pairs
Question 25
Question
Order effects can be overcome using counterbalancing.
Question 26
Question
Volunteer bias can be overcome using random sampling.
Question 27
Question
There are seven ethical considerations needed when conducting human research.