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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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, …
Patrick (Malone Quantitative)
6
6/29/20
lavaan WARNING: covariance matrix of latent variables but lavInspect( fit, "cov.lv") are all positive,what's the problem?
Adding that your factor correlations are very high across the board. The lowest one I spot is .76.
unread,
CFA
covariance
covarianceMatrix
warning
lavaan WARNING: covariance matrix of latent variables but lavInspect( fit, "cov.lv") are all positive,what's the problem?
Adding that your factor correlations are very high across the board. The lowest one I spot is .76.
6/29/20
Vibeke Nielsen
,
Nickname
2
12/20/19
Bivariate latent change score error: initial model-implied matrix (Sigma) is not positive definite
Vibeke, Unfortunately, the model syntax is not sufficient to determine the model that you fit.
unread,
covariance
error
lavaan
Bivariate latent change score error: initial model-implied matrix (Sigma) is not positive definite
Vibeke, Unfortunately, the model syntax is not sufficient to determine the model that you fit.
12/20/19
Carly P
,
Terrence Jorgensen
2
11/9/19
Estimating exogenous covariances worsening model fit
growth() is only for simple growth curves (ie, with exogenous growth factors). Draw a path diagram of
unread,
covariance
exogenous
fit
growth
model
Estimating exogenous covariances worsening model fit
growth() is only for simple growth curves (ie, with exogenous growth factors). Draw a path diagram of
11/9/19
Shajar
, …
Nickname
8
11/9/19
What is the correct way to define the covariance when measurement error is defined
Shajar, >Can you explain what is the "uniqueness covariance"? PP_Outlet ~~ TNdif In the
unread,
covariance
measurement-error
What is the correct way to define the covariance when measurement error is defined
Shajar, >Can you explain what is the "uniqueness covariance"? PP_Outlet ~~ TNdif In the
11/9/19
Lazaros Gonidis
,
Terrence Jorgensen
3
10/4/19
lavaan Regression predictors p values different than the SPSS output
Many thanks Terrence, especially for the simulating data part. I will look into that straight away.
unread,
covariance
p-value
regression
lavaan Regression predictors p values different than the SPSS output
Many thanks Terrence, especially for the simulating data part. I will look into that straight away.
10/4/19
Shajar
, …
Nickname
19
8/22/19
covariances of the composites
Thanks Keith! You helped me understand the broader aspect of formative measurement models as well as
unread,
composite
covariance
covariances of the composites
Thanks Keith! You helped me understand the broader aspect of formative measurement models as well as
8/22/19
Christopher Galgo
,
PD
2
7/19/19
Factor Score Path Analysis
Try the :::fsr function. See the articles that discuss this approach, which explain the variance/
unread,
CFA
analysis
correlationMatrix
covariance
covarianceMatrix
factor
fsr
latent
lavaan
path
robust
score
Factor Score Path Analysis
Try the :::fsr function. See the articles that discuss this approach, which explain the variance/
7/19/19
Christopher Galgo
7/14/19
Please help me. Can I use a vcv matrix of factor scores as input to lavaan?
I have a covariance matrix from factor scores and I want to use that as input for my analysis.
unread,
Heywood
analysis
covariance
covarianceMatrix
latent
lavaan
model
positive
r
regression
warning
Please help me. Can I use a vcv matrix of factor scores as input to lavaan?
I have a covariance matrix from factor scores and I want to use that as input for my analysis.
7/14/19
Sn Q. Nguyen
, …
Terrence Jorgensen
4
6/29/19
Comparing Indirect Paths and Relative Contributions
There seem to be some interesting special cases in which the indirect effect and direct effect differ
unread,
constraints
covariance
mediator
Comparing Indirect Paths and Relative Contributions
There seem to be some interesting special cases in which the indirect effect and direct effect differ
6/29/19
Isa...@hotmail.de
,
Terrence Jorgensen
6
4/27/19
Moderation in lavaan-Pathmodel
Ok, so letting the variables covary is not necessary because lavaan already allows them to covary?
unread,
covariance
definite
moderation
pathmodel
positive
warning
Moderation in lavaan-Pathmodel
Ok, so letting the variables covary is not necessary because lavaan already allows them to covary?
4/27/19
Dae Meow
, …
Dan Laxman
4
12/15/18
Model issues
Thank you, Dr. Jorgensen, for replying to this. Dae Meow, please ignore my response. I misread your
unread,
covariance
df
Model issues
Thank you, Dr. Jorgensen, for replying to this. Dae Meow, please ignore my response. I misread your
12/15/18
Terrence Jorgensen
12/9/18
Re: Fixing latent factor correlation -not covariance- to 1
I am new to lavaan after AMOS and I was wondering how I can fix the correlation between two latent
unread,
constraint
covariance
syntax
Re: Fixing latent factor correlation -not covariance- to 1
I am new to lavaan after AMOS and I was wondering how I can fix the correlation between two latent
12/9/18
unordered
,
Christopher David Desjardins
4
11/16/18
covaraince between exogenous variables
It's because you are overriding the fixed.x = TRUE with the exogenous covariance. Presumably, you
unread,
categorical
covariance
error
exogenous
covaraince between exogenous variables
It's because you are overriding the fixed.x = TRUE with the exogenous covariance. Presumably, you
11/16/18
ju.lis.br...@gmail.com
,
Terrence Jorgensen
2
11/9/18
covariance matrix, missing variables
In model 2 the exogenous variables landscapeforest.fragment and landscapeisland are present in the
unread,
covariance
covariance matrix, missing variables
In model 2 the exogenous variables landscapeforest.fragment and landscapeisland are present in the
11/9/18
fahd alfarsi
,
Terrence Jorgensen
2
11/8/18
why covariance lines between dependent variables + why orthogonal option affects dependent variables
why there are covariance lines shown between dependent variables when I use SemPaths. The sem()
unread,
bug
covariance
general
model
r
structural
why covariance lines between dependent variables + why orthogonal option affects dependent variables
why there are covariance lines shown between dependent variables when I use SemPaths. The sem()
11/8/18
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
Courtney McDermott
9/27/18
Three-level longitudinal SEM--is it possible?
I'm working with three level data (two level with repeated measurements): Emotional Self
unread,
covariance
effect
fit
growth
interaction
latent
lavaan
multilevel
sem
syntax
Three-level longitudinal SEM--is it possible?
I'm working with three level data (two level with repeated measurements): Emotional Self
9/27/18
Dai Duong
,
Terrence Jorgensen
4
9/28/18
Covariance between exogenous binary variables in SEM
Dear Dr.Terrence For the problem: 2. The above command only work with exogenous variables that have
unread,
covariance
dummy_variable
exogenous
Covariance between exogenous binary variables in SEM
Dear Dr.Terrence For the problem: 2. The above command only work with exogenous variables that have
9/28/18
James Neale
,
Edward Rigdon
4
8/19/18
Correlate Errors in Lavaan
The variables themselves are correlated through the path model. Residual covariance is all that is
unread,
covariance
error
syntax
Correlate Errors in Lavaan
The variables themselves are correlated through the path model. Residual covariance is all that is
8/19/18
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
Alex Hodgkiss
, …
Alex Hodgkiss
3
8/1/18
Controlling for other variables in a CFA
Great. Many thanks!
unread,
CFA
covariance
model
partial
Controlling for other variables in a CFA
Great. Many thanks!
8/1/18
Blain Waan
,
Terrence Jorgensen
5
7/9/18
Negative residual covariance between categorical endogenous variables in a cross-lagged SEM
One more thing, does lavaan give me partial "correlation" or "covariance" as the
unread,
categorical
covariance
cross-lagged
sem
Negative residual covariance between categorical endogenous variables in a cross-lagged SEM
One more thing, does lavaan give me partial "correlation" or "covariance" as the
7/9/18
christophe...@nicholls.edu
,
Terrence Jorgensen
5
7/9/18
measurementInvarianceCat() model with constrained latent covariances
Taking a look at the results from re-running my model, using the function the update() function that
unread,
covariance
invariance
latent
measurement
measurementInvarianceCat() model with constrained latent covariances
Taking a look at the results from re-running my model, using the function the update() function that
7/9/18