Save
Psychology
Research methods
Experimental designs
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
Tom Chaplin
Visit profile
Cards (10)
Independent groups
When
two separate groups
experience two
different conditions
of the experiment
Strength of Independant groups
No
order effects
Weaknesses of Independant groups
Individual differences
More
expensive
and
time
consuming
Repeated
measures
All
participants take part in all
conditions
of the experiment
Strengths of Repeated measures
No
individual differences
Requires
less
ppts -
cheaper
and
quicker
Order effects are dealt with through
counterbalancing
- half the group
observe
and half the group participate, then
switch
Weaknesses of
repeated measures
Order effects
- order of tasks done may be significant, could create
boredom
and
fatigue
,
repetition
could also improve performances
Demand characteristics
Matched Pairs
Where participants are
matched
based on a
variable
relevant to the study (
IQ
,
strength
), then
split up
and assigned to either
condition
Strengths of Matched Pairs
Less
order
effects and
demand characteristics
Controls
individual differences
more
Weaknesses of matched pairs
Not fully
accurately
matched
Time
consuming
Standardisation
Conditions
are the
same
among all ppts -
controls
variables and establishes a stronger
relationship
between variables