I am having some trouble understanding the difference (if any) between a Within Subject and a Repeated Measure design.
A few resources online seem to suggest that they are often interchangeable or almost the same. Note the below descriptions
Within Subject Design
In a within subject design, unlike a between subjects design, every single participant is subjected to every single treatment, including the control.
Repeated Measures Design
The term 'repeated measures design' is often interchanged with the term 'within subjects design,' although many researchers only class a subtype of the within subjects design, known as a crossover study, as a repeated measures design.
What is a Repeated Studies Design?
The repeated measures design uses the same subjects with every condition of the research, including the control.
From what I understand, and please someone help me here, all Repeated Measure Designs are Within Subject Designs but not all Within Subject Designs are Repeated Measure Designs?
If the above is correct, in what circumstances are they different?
Could anybody give me some pointers here?
Any help is as always, hugely appreciated
It is ironic that even on this site when I tried to find the "within-subject" tag it recommended I use the "repeated-measures" tag :-)