wrong formula for mixed designs?
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Description
I don't know if you have seen this paper: https://journal.r-project.org/archive/2016/RJ-2016-027/RJ-2016-027.pdf
On page 376, it states:
"This indicates that the art function from ARTool uses the wrong Higgins and Tashtoush formula for aligning the data in mixed designs. It uses the formula for between x between designs, instead of using the formula for mixed (In Higgins’s terms: split-plot or repeated measures) designs."
I did not test this myself, but I was wondering whether you can confirm this as a potential issue? Thanks!
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Research direction
Start by reading the cited 2016 R Journal paper, especially page 376, then inspect the art function's alignment logic for mixed designs. Reproduce a mixed-design case and compare its formula with the paper's Higgins and Tashtoush formula. Done means confirming whether the reported formula is wrong and documenting or correcting the behavior accordingly.
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Assessment
- Tech stack
- r
- Domain
- data
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100