Experimental designs Flashcards
What is a repeated measures design?
A design where the same participants take part in all conditions of the experiment reducing participant variables but increasing order effects.
What is an independent groups design?
A design where different participants are used in each condition reducing order effects but increasing participant variables.
What is a matched pairs design?
A design where participants are matched on key characteristics relevant to the study before being allocated to different conditions reducing participant variables and order effects.
What is a key advantage of a repeated measures design?
Reduces participant variables because the same participants take part in all conditions.
What is a key disadvantage of a repeated measures design?
Order effects such as practice or fatigue may affect results as participants take part in all conditions.
What is a key advantage of an independent groups design?
Avoids order effects because different participants take part in each condition.
What is a key disadvantage of an independent groups design?
Increases participant variables because different participants are used in each condition.
What is a key advantage of a matched pairs design?
Reduces participant variables because participants are matched on key characteristics before allocation.
What is a key disadvantage of a matched pairs design?
Time-consuming and difficult to match participants exactly on all relevant variables.
How can order effects in a repeated measures design be controlled?
Counterbalancing which ensures that each condition is experienced first and second equally across participants.
