Firstly: I want to run a CFA with 7 latent variables and 39 observed variables.
For a guide of how I constructed my CFA, I used this Youtube Video:
It looks to me to be exactly correct according to the process explained in the above mentioned clip. However the CFA will not run, and the output reads this message: "The model is probably unidentified. In order to achieve identifiability, it will probably be necessary to impose 15 additional constraints".
My first question is, why is the CFA not running, and why does it say I need to add 15 more constraints? To my understanding this CFA is correct.
Secondly: I am running a SEM with 9 latents and 49 observed variables. This model will also not run, and when I check the output it reads: "Iteration limit reached, the results that follow are therefore incorrect". I do not understand what this means.
Does anyone know what is going wrong with this SEM?
A calculation of the sample size needed suggests I need 289 participants. I have 325 participants, although they are composed of a smaller data set multiplied by 3 or 4 times to reach sufficient sample size (could this be an issue?).