experimental designs Flashcards
what is independent groups design
two different groups experience two seperate conditions
what is repeated measures design
one group of participants experiences both conditions
what is matched pairs design
participants are paired with a similar participant in the alternative group to reduce the affect of participant variables
what is a strength of independent groups design
avoids order effects
what are the weaknesses of independant groups design
individual differences, number of participants needed
what are the strengths of repeated measures design
participants variables are controlled, fewer participants are needed
what are the weaknesses of repeated measures design
order effects, denand characteristics
what are the strengths of matched pairs design
reduces participant variables, avoids order effects
what are the weaknesses of matched pairs design
does not fully eliminate participant variables, time consuming, difficult to achieve a good match
what is counterbalancing
an attempt to control order effects in a repeated measures design by making each group of participants experience conditions in a different order
what is random allocation
an attempt to adress the problem of partipant variables by randomly allocating participants to a group by pulling names out of a hat
