Experimental design

• Repeated measures uses the same participant group for both conditions
• Independent measures uses different groups for each condition
• Matched pairs matches the participants in each condition according to variables like age and intelligence
• One strength of repeated measures is the subject variables are the same in both conditions
• One strength of independent measures is that there are no order effects
• One strength of matched pairs is less demand characteristics
• One weakness of repeated measures is the order effects [ learning / fatiuge]
• One weakness if independent measures is needing more subjects , making it less economical
• One weakness of matched pairs is that the variables can't be perfectly matched
• Counterbalanceing Is using AB BA to assign the conditions to groups
• A double blind study is when both the researcher and the participants don't know the aim of the study
• Random allocation is when participants are randomly assigned into the conditions