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Corone
Corone
4:37 PM
So it seems, even a bounty couldn't get an answer to this one:
6
Q: Dynamic factor analysis vs factor analysis on differences

Johann HibschmanI'm trying to wrap my head around dynamic factor analysis. So far, my understanding is that DFA is just factor analysis plus a time series model on the scores (the loadings remain fixed). However, in the cases that I've seen, the model on the scores is just a random walk with a diagonal correlati...

time-series factor-analysis
It's not mega old, so maybe one day it will get an answer
 
 
2 hours later…
Andy W
Andy W
6:40 PM
The dynamic factor analysis question is hard, it will likely take an expert on that particular topic to give a reasonable answer (which are probably hard to come by).
The reliability question is hard to figure out what is going on. I am going to put in a vote to close and comment the OP needs to be more clear. Reliability of change scores is near meaningless anyway - which is what I believe the OP is suggesting.
 

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