151710
Description
Mind Map by Eleanor Matthewman, updated more than 1 year ago
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Created by Eleanor Matthewman
almost 11 years ago
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Experimental Design
- Repeated measures-
testing the same group of
people in different
conditions
- Advantages
- Avoids the issue of PpsV
- fewer people are needed
- Avoids the issue of PpsV
- Disadvantages
- order effects
- demand charactorics
- order effects
- Advantages
- Independent groups-
testing separate groups of
people. Each group is
tested in a different
condition
- Advantages
- Quick and easy
- avoids order effects
- Quick and easy
- Disadvantages
- higher risk of PpsV
- More people
are needed
- higher risk of PpsV
- Advantages
- Matched pairs- testing
separate groups of
people where one
member of each group is
the same age, sex,
ethnicity etc as a member
of another group
- Disadvantages
- time consuming
finding pairs
- never an exact match (except identical twins)
- time consuming
finding pairs
- Advantages
- Reduces PpsV
- Avoids order effects
- Reduces PpsV
- Disadvantages
- Defintions
- Random allocation is randomly
assigning people to different
groups. Independent groups
- Counterbalancing is reversing the order of
the conditions for half of the Pps to reduce
order effects. Repeated measures
- Order effects are when a pps experiences both
experimental and control conditions, their
performance may be affected
- The control groups is
the group that does not
experience the IV
- The experimental groups is the group that
experiences the IV
- Random allocation is randomly
assigning people to different
groups. Independent groups
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