Reseach Design And Pilot Studiea Flashcards
Experimental design
How psychologists organise their groups of participants
Independent groups
A separate group of participants for each independent variable
Matched pairs
A separate group of participants for each condition of the IV but they are fitted for certain characteristics
Repeated measures
Every participant completes each condition
Pros of independent groups
Avoids order effects such as fatigues people only participate in one condition
Cons independent groups
More participants needed than other experimental design eg repeated measures which is more time consuming. Differences between participants in the groups
Pros Repeated measures
Participant variables are reduced because the same ps are used, fewer people needed because they take part in the same conditions
Cons repeated measures
Order effects, performance in second condition may be weakened because they are tired or strengthened because the ps know what to do
Pros matched pairs
Reduced participants variables because people have similar abilities. Avoids order effects
Cons matched pairs
Very consuming trying to find closely matched pairs. Imposssible to match people exactly
Pilot studies
Pilot studied are small, trail versions of proposed studied to test their effectiveness and make improvements