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  • Created by: 10dhall
  • Created on: 23-08-17 14:41
What is reactivity?
Adjustment of behaviour due to knowledge about the study
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How do we avoid reactivity?
Using placebos or double blind studies
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what examples of non experimental design are there?
Natural observation, case studies, surveys and interviews
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What is the purpose of correlational research?
To determine the relationship between 2 variables without manipulating them
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How do we deal with nuisance variables?
Turn it into a control variable, counterbalance
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Advantages of experiments?
Strong tests of causality and can manipulate variables
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Disadvantages of experiments?
Unnatural settings and task, reactivity, and ethical limitations
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When do nuisance variables become compounding variables?
The effects of the variables change between conditions, could therefore be due to the nuisance variable rather than be iv
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What is within subjects design?
Repeated measure of designs
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What is between subjects design?
Independent groups design
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What are quasi experiments?
when an experimenter wants to investigate an iv that can not be assigned e.g. autisms
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advantages of quasi experiments?
allows the study of variables that can not be ethically manipulated
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disadv?
Not causational
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What are the sampling types?
Random, stratified (random selection of each subgroup), quota sample (representative sample for target)
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Advantages of EEG?
Excellent temporal resolution, inexpensive
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Disadvantages of EEG?
Poor spacial resolution
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Advantages of FMRI?
Excellent spacial resolution, can access all areas of brain
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Disadvantages of FMRI?
Poor temporal resolution, expensive and participants must not move
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What is nominee data?
Where the number is just a label, it signifies no higher or lower score
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What is ordinal data?
Data that is ordered in a numerical order e.g. scoresheet
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What is interval data?
The intervals of the data is equal
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What is ratio data?
they tell us about the order, they tell us the exact value between units, AND they also have an absolute zero
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What are the measures of central tendency?
mode(N), mean(I+R) and median(I, R, O)
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How do we calculate the standard deviation?
diff from mean, square, add, divide by no of data, square root
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Other cards in this set

Card 2

Front

How do we avoid reactivity?

Back

Using placebos or double blind studies

Card 3

Front

what examples of non experimental design are there?

Back

Preview of the front of card 3

Card 4

Front

What is the purpose of correlational research?

Back

Preview of the front of card 4

Card 5

Front

How do we deal with nuisance variables?

Back

Preview of the front of card 5
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