Describe some situations for which a repeated-measures design is well suited.
The repeated-measures design is suited to situations in which a particular type of subject is not readily available for study. This design is helpful because it uses fewer subjects (only on sample is needed). Certain questions are addressed more adequately by a repeated-measures design -for example, anytime one would like to study changes across time in the same individuals. Also, when individual differences are large, a repeated-measures design is helpful because it reduces the amount of this type of error in the statistical analysis.