Paired Samples:Paired samples refer to two measurements taken on the same individual or two closely related individuals, such as before and after an intervention or on two different treatments.
Repeated Measures Design: A repeated measures design is an experimental design where the same participants are measured under different conditions or at multiple time points, allowing for the assessment of within-subject effects.
Blocking:Blocking is a technique used in experimental design to reduce the effects of nuisance variables by grouping experimental units into homogeneous blocks, ensuring that the treatments are distributed evenly across the blocks.