A researcher asks a sample of brothers and sisters to rate how positive their family environment was during their childhood. In this study, the differences in ratings between each brother and sister...

A researcher asks a sample of brothers and sisters to rate how positive their family environment was during their childhood. In this study, the differences in ratings between each brother and sister pair were compared. Type type of design described here would be _____ A. Repeated-measures design B. Matched-samples design C. Both