Confounded effects [Design Issues]

posted by Helmut Homepage – Vienna, Austria, 2018-06-29 14:35 (1920 d 19:16 ago) – Posting: # 18998
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Hi libaiyi,

❝ I am a little confused that do you mean that carryover may cause carryover effect and period effect at the same time?

See this post for examples: Two others here:In a 2×2 design some effects are confounded (see what Detlew wrote above). Hence, if there are true and equal carryover effects, results are exactly the same as if there are none and only a true period effect (the second example in the other post).
I guess you could only sort it out with full replicate designs where you have sequences containing TT and RR (TRRT|RTTR, TTRR|RRTT, or TRR|RTT).

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