lavaan

Contact owners and managers

1–30 of 5133

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:

https://lavaan.ugent.be/about/donate.html

0 selected

Yingjie Yuan

8/6/20

Lavaan error: Multigroup multilevel mediation analysis

Hello everyone, I got an error message when modeling a multilevel mediation model (a 2-2-1 model,

unread,

error

multigroup

multilevel

Lavaan error: Multigroup multilevel mediation analysis

Hello everyone, I got an error message when modeling a multilevel mediation model (a 2-2-1 model,

8/6/20

Ari Fodeman, Yves Rosseel2

7/16/20

"NA/NaN Hessian evaluation" error message interpretation help

> ...I get this error message: > > Error in nlminb(start = cache$theta, objective =

unread,

"NA/NaN Hessian evaluation" error message interpretation help

> ...I get this error message: > > Error in nlminb(start = cache$theta, objective =

7/16/20

Joan Chan, Patrick (Malone Quantitative)4

7/13/20

Conducting a CFA on bi-factor models that allow latent factors to correlate

It worked!! Thank you so much! :) On Monday, July 13, 2020 at 8:16:51 PM UTC+8, Patrick (Malone

unread,

Conducting a CFA on bi-factor models that allow latent factors to correlate

It worked!! Thank you so much! :) On Monday, July 13, 2020 at 8:16:51 PM UTC+8, Patrick (Malone

7/13/20

scorla, Yves Rosseel2

7/16/20

lavaan and indicators without error

On 7/13/20 12:45 AM, scorla wrote: > sample covariance matrix is not positive-definite Note that

unread,

lavaan and indicators without error

On 7/13/20 12:45 AM, scorla wrote: > sample covariance matrix is not positive-definite Note that

7/16/20

Danushika Sivanathan, Terrence Jorgensen3

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,

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

Caroline Wehner, … Mauricio Garnier-Villarreal6

6/15/20

Bivariate dual change core model - fits in Mplus but not in lavaan (ERROR: initial model-implied matrix (Sigma) is not positive definite; check your model and/or starting parameters)

No problem, good it was an easy fix On Monday, June 15, 2020 at 11:26:39 AM UTC-5, Caroline Wehner

unread,

Mplus

error

lavaan

Bivariate dual change core model - fits in Mplus but not in lavaan (ERROR: initial model-implied matrix (Sigma) is not positive definite; check your model and/or starting parameters)

No problem, good it was an easy fix On Monday, June 15, 2020 at 11:26:39 AM UTC-5, Caroline Wehner

6/15/20

Brandon McCormick, … Terrence Jorgensen6

7/30/21

Error in Summary() function for a fitted sem.mi object

Does your sessionInfo() show that the VGAM package is loaded? That problem will eventually be

unread,

Error in Summary() function for a fitted sem.mi object

Does your sessionInfo() show that the VGAM package is loaded? That problem will eventually be

7/30/21

Lukas Wallrich, car...@web.de2

5/30/20

Cannot estimate simple CFA - warning and error

":=" defines a new parameter and not the measurement model. The lavaan tutorial is very

unread,

CFA

error

warning

Cannot estimate simple CFA - warning and error

":=" defines a new parameter and not the measurement model. The lavaan tutorial is very

5/30/20

Yousra DHAINI, Terrence Jorgensen3

5/27/20

NA error

Yousra DHAINI 17:09 (il ya 5 heures) À lavaan Yes sir, it doen't converge to a solution ( the

unread,

Yousra DHAINI 17:09 (il ya 5 heures) À lavaan Yes sir, it doen't converge to a solution ( the

5/27/20

Dr. Fernán Arana, Edward Rigdon3

5/6/20

correlating different set of residuals covariances across groups

Thanks a lot!! That worked excellently. Didn´t find this solution before so thanks! El lunes, 4 de

unread,

correlating different set of residuals covariances across groups

Thanks a lot!! That worked excellently. Didn´t find this solution before so thanks! El lunes, 4 de

5/6/20

Kelly Lam, Terrence Jorgensen2

3/21/20

Unable to run SEM because of zero variance categorical dummy variables

Is there a better way to recode these exogenous categorical (nominal) variables in my model? Dummy

unread,

error

sem

Unable to run SEM because of zero variance categorical dummy variables

Is there a better way to recode these exogenous categorical (nominal) variables in my model? Dummy

3/21/20

Павел Валединский, … Valeria Ivaniushina8

2/12/20

fixed error variance for single indicator in CFA model with multiple and single indicators for constructs

Thank you very much, Terrence! it's very helpful Valeria On Wed, Feb 12, 2020 at 12:48 PM

unread,

fixed error variance for single indicator in CFA model with multiple and single indicators for constructs

Thank you very much, Terrence! it's very helpful Valeria On Wed, Feb 12, 2020 at 12:48 PM

2/12/20

Lindy Howe, Terrence Jorgensen2

1/3/20

HELP WITH LAVAAN ERROR. Error with path analysis using latent variable

I am attempting to run this model using lavaan Try using sem() instead, which automatically adds the

unread,

HELP WITH LAVAAN ERROR. Error with path analysis using latent variable

I am attempting to run this model using lavaan Try using sem() instead, which automatically adds the

1/3/20

Vibeke Nielsen, Nickname2

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

Agnieszka Ewa Łyś, … Christopher David Desjardins7

11/21/19

"RLANG" error in lavaan CFA

I have no idea why lack of "rlang" was a problem but I installed "rlang" and now

unread,

"RLANG" error in lavaan CFA

I have no idea why lack of "rlang" was a problem but I installed "rlang" and now

11/21/19

Burt Hatch, … Terrence Jorgensen15

2/27/20

Heywood case with negative variance and calculation of CI with multiple imputations

Sorry for the confusion. Using cfa() I get nonconvergence. Using lavaan() I just get the heywood case

unread,

Heywood case with negative variance and calculation of CI with multiple imputations

Sorry for the confusion. Using cfa() I get nonconvergence. Using lavaan() I just get the heywood case

2/27/20

Thang Le2

11/11/19

Error in path analysis with 4 variables

Never mind. I figured it out. Thanks to the those who created the forum and keep it active anyway!

unread,

error

Error in path analysis with 4 variables

Never mind. I figured it out. Thanks to the those who created the forum and keep it active anyway!

11/11/19

Vibeke Nielsen, Mauricio Garnier-Villarreal3

11/7/19

Adding gender as covariate or moderator to a bivariate latent change score model with Lavaan R

Thank you very much for your tips, Mauricio Garnier-Villarreal. I have indeed also tried to

unread,

Adding gender as covariate or moderator to a bivariate latent change score model with Lavaan R

Thank you very much for your tips, Mauricio Garnier-Villarreal. I have indeed also tried to

11/7/19

Ryan, … Terrence Jorgensen11

10/8/19

Error returned by permuteMeasEq when testing threshold invariance

I should add that if I run the same model without including the general factor, I get the same

unread,

Error returned by permuteMeasEq when testing threshold invariance

I should add that if I run the same model without including the general factor, I get the same

10/8/19

Tatiana Logvinenko, Nickname2

9/25/19

NA values in standard errors after removing one variable from the model

Tatiana, As a general strategy, focus on the first error/warning first because solving the first

unread,

NA values in standard errors after removing one variable from the model

Tatiana, As a general strategy, focus on the first error/warning first because solving the first

9/25/19

Yu Liu, … Hugo Harada4

6/5/20

Error message in multiple-group ordinal CFA: Error in if (any(dCOV < 0)) { : missing value where TRUE/FALSE needed

Hi, Yu, Sarah, Could you check if this error goes away with Terrence and Yves replies to the thread

unread,

error

multigroup

ordinal

Error message in multiple-group ordinal CFA: Error in if (any(dCOV < 0)) { : missing value where TRUE/FALSE needed

Hi, Yu, Sarah, Could you check if this error goes away with Terrence and Yves replies to the thread

6/5/20

Natalija Plasonja, Terrence Jorgensen5

9/18/19

lavaan error: number of observations too small to compute Gamma in MGCFA using WLSMV

I assume then that if your Likert scale points are coded numerically, you should use estimators for

unread,

WLSMV

error

lavaan

lavaan error: number of observations too small to compute Gamma in MGCFA using WLSMV

I assume then that if your Likert scale points are coded numerically, you should use estimators for

9/18/19

Robert Udale, … Franzi K.6

9/30/19

Multigroup multilevel SEM - is this possible?

Sorry for the unspecific question, I was rather referring to things I have to specify in the sem()-

unread,

Multigroup multilevel SEM - is this possible?

Sorry for the unspecific question, I was rather referring to things I have to specify in the sem()-

9/30/19

Rob R, … Edward Rigdon5

7/9/19

Syntax for correlation between residual variances of a latent factor and an observed variable

Hi Ed, After applying your advice to my own syntax, the model is able to be fit with the desired

unread,

error

model

syntax

Syntax for correlation between residual variances of a latent factor and an observed variable

Hi Ed, After applying your advice to my own syntax, the model is able to be fit with the desired

7/9/19

Carolina Rojas Cordova, nick judd2

7/31/19

Moderation: error WARNING: some observed variances are a factor 1000 times larger than others

Do vartable(fit) to find the offending variables, then multiple of divide by a factor of 10. https://

unread,

error

moderation

Moderation: error WARNING: some observed variances are a factor 1000 times larger than others

Do vartable(fit) to find the offending variables, then multiple of divide by a factor of 10. https://

7/31/19

Vasiliki, Jeremy Miles2

6/14/19

sem error

On Fri, 14 Jun 2019 at 07:38, 'Vasiliki' via lavaan <lav...@googlegroups.com> wrote:

unread,

On Fri, 14 Jun 2019 at 07:38, 'Vasiliki' via lavaan <lav...@googlegroups.com> wrote:

6/14/19

周露阳2

5/22/19

Error in if (abs(ll.old - ll.new) < convergence) run <- FALSE

Bellow are the codes in lavaan grammar: ++++++++++++++++++ library("nlsem") modLMS.model

unread,

Error in if (abs(ll.old - ll.new) < convergence) run <- FALSE

Bellow are the codes in lavaan grammar: ++++++++++++++++++ library("nlsem") modLMS.model

5/22/19

周露阳, car...@web.de5

5/22/19

Wrong input for specifying exogenous or endogonous latent variables

Thank you very much. 在 2019年5月23日星期四 UTC+8上午12:00:07，car...@web.de写道： At first glance, I'd say

unread,

error

interaction

latent

Wrong input for specifying exogenous or endogonous latent variables

Thank you very much. 在 2019年5月23日星期四 UTC+8上午12:00:07，car...@web.de写道： At first glance, I'd say

5/22/19

Andrew Kiselica, … Nickname4

5/24/19

Bifactor Model Errors

Thanks for the very helpful reply, Keith! Fixing the factor variances did the trick. On Thursday, May

unread,

bifactor

error

Bifactor Model Errors

Thanks for the very helpful reply, Keith! Fixing the factor variances did the trick. On Thursday, May

5/24/19

Joana Brokelmann

5/22/19

cross lagged panel SEM Error because of high covariances

Dear all, I am trying to run a SEM. I measured two variables (ABB and PSWQ) at two occasions (t0 and

unread,

cross lagged panel SEM Error because of high covariances

Dear all, I am trying to run a SEM. I measured two variables (ABB and PSWQ) at two occasions (t0 and

5/22/19