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Welcome to the lavaan discussion group. Lavaan is an R package for latent variable analysis.
If you enjoy using lavaan, please consider giving a donation to support the lavaan project. See:
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Danushika Sivanathan
,
Terrence Jorgensen
3
6/30/20
Estimated LV variances negative for first order factor (with two factors predicting a second order factor)
Hi Terence, That is my mistake. I used the colon as a short hand. But the actual model is below: mode
unread,
Heywood
error
loading
negative
negativevariance
second-order
Estimated LV variances negative for first order factor (with two factors predicting a second order factor)
Hi Terence, That is my mistake. I used the colon as a short hand. But the actual model is below: mode
6/30/20
Magali Frauendorf
,
Edward Rigdon
5
6/12/20
Negative variance error in CFA model (with addressing measurement error/repeatability))
Hi Edward, Thanks a lot for all your answers. It helped me a lot! Best, Magali
unread,
CFA
Heywood
fit
latent
lavaan
measurement-error
negativevariance
Negative variance error in CFA model (with addressing measurement error/repeatability))
Hi Edward, Thanks a lot for all your answers. It helped me a lot! Best, Magali
6/12/20
Kinga Bierwiaczonek
4/9/20
Negative variances in Autoregressive Latent Trajectory Model w
Dear all, I am trying to fit an autoregressive latent trajectory model with structured residuals on a
unread,
growth
negativevariance
variance
Negative variances in Autoregressive Latent Trajectory Model w
Dear all, I am trying to fit an autoregressive latent trajectory model with structured residuals on a
4/9/20
R Monica S
,
Terrence Jorgensen
3
6/3/19
Heywood case and solution
Dear Dr. Jorgensen, Thank you very much for your time and help. I will use SEMNET and also study
unread,
bi-factor
higher-order
negativevariance
Heywood case and solution
Dear Dr. Jorgensen, Thank you very much for your time and help. I will use SEMNET and also study
6/3/19
cezre...@gmail.com
,
Terrence Jorgensen
4
3/6/19
Latent change model, negative variance
I have updated the code as you suggested No, you are still only providing one label, instead of a
unread,
negativevariance
Latent change model, negative variance
I have updated the code as you suggested No, you are still only providing one label, instead of a
3/6/19
Yuen Wan Ho
,
Terrence Jorgensen
2
2/28/19
ways to handle negative variance in latent growth modeling
How can I handle the problem? There are numerous repeated answers to this question on this forum.
unread,
estimator
growth
lavaan
negativevariance
ways to handle negative variance in latent growth modeling
How can I handle the problem? There are numerous repeated answers to this question on this forum.
2/28/19
janmicha...@googlemail.com
, …
Chao Xu
7
2/10/19
Two-level CFA and restriction of error variance of the between level
I found the source of the problem by relaxing the between-level residual variance constraints one by
unread,
CFA
Heywood
lavaan
multilevel
negativevariance
Two-level CFA and restriction of error variance of the between level
I found the source of the problem by relaxing the between-level residual variance constraints one by
2/10/19
Conal Monaghan
, …
Terrence Jorgensen
5
1/25/19
Approaches to negative variance solutions
there is an issue with negative covar between two of the factors; minimising ~~ helpful = -0.010 In
unread,
negativevariance
Approaches to negative variance solutions
there is an issue with negative covar between two of the factors; minimising ~~ helpful = -0.010 In
1/25/19
Hannah C
,
Terrence Jorgensen
3
11/7/18
Covariance between latent factors = greater than 1 : can I constrain it to 1?
Hi Terrence Thanks for your reply. Regarding your second point, the CI's do include values < 1
unread,
covariance
latent
lavaan
negativevariance
standardized
variables
Covariance between latent factors = greater than 1 : can I constrain it to 1?
Hi Terrence Thanks for your reply. Regarding your second point, the CI's do include values < 1
11/7/18
Emmanuel W
, …
Terrence Jorgensen
6
10/11/18
negative variance with WLSMV estimator
It seems problematic that one of your depression indicators is dep(ression), which I would expect to
unread,
CFA
estimator
negativevariance
negative variance with WLSMV estimator
It seems problematic that one of your depression indicators is dep(ression), which I would expect to
10/11/18
Nicolas
, …
Rebekka Weidmann
4
1/30/21
VCOV does not appear to be positive definite
Here and somewhere else I found comments on not worrying about eigenvalues that are super close to
unread,
CFA
negativevariance
warning
VCOV does not appear to be positive definite
Here and somewhere else I found comments on not worrying about eigenvalues that are super close to
1/30/21
fotin...@gmail.com
, …
Myriam
3
7/25/20
Warning message: trouble constructing W matrix; used generalized inverse for A11 submatrix
I had the same error message and went to read the Muthen 1984 paper referenced in the error message (
unread,
lavaan
negativevariance
sem
syntax
warning
Warning message: trouble constructing W matrix; used generalized inverse for A11 submatrix
I had the same error message and went to read the Muthen 1984 paper referenced in the error message (
7/25/20
fotin...@gmail.com
,
Terrence Jorgensen
2
8/14/18
Warning: covariance matrix of latent variables is not positive definite
Is this telling me that I have to exclude PAa from my model? I'm not sure why you are singling
unread,
covariance
fit
negativevariance
sem
warning
Warning: covariance matrix of latent variables is not positive definite
Is this telling me that I have to exclude PAa from my model? I'm not sure why you are singling
8/14/18
Emmanuel Banda
,
Terrence Jorgensen
2
8/8/18
How i can improve my SEM mediation model fit
Judging from your factor loadings, the measurement model does not look reasonable. I'm guessing
unread,
error
fit
lavTestLRT
lavaan
negativevariance
rmsea
How i can improve my SEM mediation model fit
Judging from your factor loadings, the measurement model does not look reasonable. I'm guessing
8/8/18
Aryanne van Delft
,
Terrence Jorgensen
5
8/8/18
negative covariance
Thanks a lot !!! On Tuesday, August 7, 2018 at 2:14:51 PM UTC+2, Terrence Jorgensen wrote: I thought
unread,
negativevariance
negative covariance
Thanks a lot !!! On Tuesday, August 7, 2018 at 2:14:51 PM UTC+2, Terrence Jorgensen wrote: I thought
8/8/18
janb...@googlemail.com
,
Terrence Jorgensen
6
8/1/18
Warning message: "some estimated ov variances are negative"
Is there any standardized way on constructing a better fitting model? I would recommend looking at
unread,
error
growth
latent
lavaan
model
negativevariance
variance
warning
Warning message: "some estimated ov variances are negative"
Is there any standardized way on constructing a better fitting model? I would recommend looking at
8/1/18