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Welcome to the lavaan discussion group. Lavaan is an R package for latent variable analysis.

Note: the first time you post, it may take a while (a few hours, up to a few days) before your post is visible. That only happens the very first time you post, because one of the group owners needs to approve your post. (This is to avoid spam).

If you enjoy using lavaan, please consider giving a donation to support the lavaan project. See:

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

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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

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negativevariance

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

Brandon Weiss, Terrence Jorgensen2

4/9/20

Growth model interpretation question

should the .842 loading on s (see output) influence my interpretation of the slope mean (ie, .221)

unread,

Growth model interpretation question

should the .842 loading on s (see output) influence my interpretation of the slope mean (ie, .221)

4/9/20

Brandon Weiss, Mauricio Garnier-Villarreal4

4/3/20

Using NA* in growth model not matching MPlus

Good was an easy fix then On Friday, April 3, 2020 at 1:44:49 PM UTC-5, Brandon Weiss wrote: Y'

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Using NA* in growth model not matching MPlus

Good was an easy fix then On Friday, April 3, 2020 at 1:44:49 PM UTC-5, Brandon Weiss wrote: Y'

4/3/20

DENNIS RUENGER, … Mauricio Garnier-Villarreal3

12/16/19

Growth mixture model with unobserved/latent groups

In chapter 7 of Growth Modeling (https://www.guilford.com/books/Growth-Modeling/Grimm-Ram-Estabrook/

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Growth mixture model with unobserved/latent groups

In chapter 7 of Growth Modeling (https://www.guilford.com/books/Growth-Modeling/Grimm-Ram-Estabrook/

12/16/19

Carly P, Terrence Jorgensen2

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

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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

Matti Cervin, Terrence Jorgensen2

7/13/19

Latent growth curve model with covariance between indicators

This is not a lavaan issue. Consider posting your more general SEM questions on SEMNET: http://www2.

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Latent growth curve model with covariance between indicators

This is not a lavaan issue. Consider posting your more general SEM questions on SEMNET: http://www2.

7/13/19

AV AV, … Andy Supple6

6/26/19

growth curve model - problems with standardised coefficients

Thank you very much for your help! It makes more sense to me now, and it's true, I was probably

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growth curve model - problems with standardised coefficients

Thank you very much for your help! It makes more sense to me now, and it's true, I was probably

6/26/19

Craig Van Pay, Christopher David Desjardins3

6/10/19

In multiple group LGC model, how do I constrain residual variances of mani. vars within each group?

Wow, that's easy enough, thanks Christopher! On Monday, June 10, 2019 at 1:12:47 PM UTC-5,

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In multiple group LGC model, how do I constrain residual variances of mani. vars within each group?

Wow, that's easy enough, thanks Christopher! On Monday, June 10, 2019 at 1:12:47 PM UTC-5,

6/10/19

martij...@hotmail.com, Mauricio Garnier-Villarreal2

6/6/19

cross-lags in single times series of multiple variables

Martijn lavaan will not work with only 1 subject. For something like this I think the best option is

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cross-lags in single times series of multiple variables

Martijn lavaan will not work with only 1 subject. For something like this I think the best option is

6/6/19

michelle roth, … Terrence Jorgensen6

5/26/19

comparing between male and female model

The thing is, I want to make latent growth curve modeling, not a APIM model. I also checked the APIM,

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model-comparison

test-statistics

comparing between male and female model

The thing is, I want to make latent growth curve modeling, not a APIM model. I also checked the APIM,

5/26/19

Matti Cervin, Terrence Jorgensen5

4/8/19

Fitting growth curve model with ordinal indicators and imputed data

Thank you, Terrence. No, I have not read through the whole paper yet. I struggle with the math

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Fitting growth curve model with ordinal indicators and imputed data

Thank you, Terrence. No, I have not read through the whole paper yet. I struggle with the math

4/8/19

Matti Cervin, Terrence Jorgensen4

4/6/19

Growth curve model with imputed data (mice)

Do you know if there is code anywhere that shows you have to do it? The ?model.syntax help page

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Growth curve model with imputed data (mice)

Do you know if there is code anywhere that shows you have to do it? The ?model.syntax help page

4/6/19

rothmi...@hotmail.com, Terrence Jorgensen2

3/6/19

time invariant covariates in LGM

I`d like to add a time-invariant covariate. How can I do this? Use the regression operator: ~ http://

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time invariant covariates in LGM

I`d like to add a time-invariant covariate. How can I do this? Use the regression operator: ~ http://

3/6/19

Yuen Wan Ho, Terrence Jorgensen2

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.

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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

rothmi...@hotmail.com, Terrence Jorgensen5

2/19/19

latent growth curve modeling - lavaan

Do you have some reading/tutorial requests on that (with R code)? http://www2.gsu.edu/~mkteer/semnet.

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latent growth curve modeling - lavaan

Do you have some reading/tutorial requests on that (with R code)? http://www2.gsu.edu/~mkteer/semnet.

2/19/19

Marcos Angelini, Terrence Jorgensen5

2/5/19

Growth curve model

Thanks a lot Terrence! I will read these references. El martes, 5 de febrero de 2019, 7:22:18 (UTC-3)

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Growth curve model

Thanks a lot Terrence! I will read these references. El martes, 5 de febrero de 2019, 7:22:18 (UTC-3)

2/5/19

Peter Hilpert, Mauricio Garnier-Villarreal5

1/11/19

Extract data from growth curve model

Peter In the ?lavPredict page there is the following example to help adding them back to the original

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Extract data from growth curve model

Peter In the ?lavPredict page there is the following example to help adding them back to the original

1/11/19

Brie M, Chao Xu2

12/9/18

decent growth model fit but negative variance error

This warning is usually due to model misspecification (eg, a covariance is fixed to 1 when it should

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decent growth model fit but negative variance error

This warning is usually due to model misspecification (eg, a covariance is fixed to 1 when it should

12/9/18

Elissa Hamlat, … Christopher Desjardins14

11/29/18

growth curve model w/ manifest predictors (and their interaction) + plot

Hi Elissa, I still think that website will give you every thing you need. Click through it and take a

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growth curve model w/ manifest predictors (and their interaction) + plot

Hi Elissa, I still think that website will give you every thing you need. Click through it and take a

11/29/18

fenn.st...@gmail.com, … Terrence Jorgensen8

10/18/18

problem to define a multilevel latent growth curve model (using the cluster option in lavaan)

Could I ask you how do you use ICC measures in practice? Do you prefer certain ICC measures? Only

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problem to define a multilevel latent growth curve model (using the cluster option in lavaan)

Could I ask you how do you use ICC measures in practice? Do you prefer certain ICC measures? Only

10/18/18

Leslie Rutkowski, Yves Rosseel2

10/7/18

lavaan WARNING: some models are based on a different set of observed variables

to make the models nested, you should add the covariates in the unconditional model too, but fix the

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lavaan WARNING: some models are based on a different set of observed variables

to make the models nested, you should add the covariates in the unconditional model too, but fix the

10/7/18

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

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Three-level longitudinal SEM--is it possible?

I'm working with three level data (two level with repeated measurements): Emotional Self

9/27/18

ericlth...@gmail.com, Terrence Jorgensen2

9/24/18

age definition variables in linear growth model (individually-varying times of observation)

does lavaan have the option to set age as the time metric in a linear growth model, as individually-

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age definition variables in linear growth model (individually-varying times of observation)

does lavaan have the option to set age as the time metric in a linear growth model, as individually-

9/24/18

Isabelle Hansson, … Jack Bailey5

9/25/18

Latent growth curve model with individually varying time points

Thanks for the advice Jack! Den söndag 23 september 2018 kl. 10:53:36 UTC+2 skrev Jack Bailey: Hi

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Latent growth curve model with individually varying time points

Thanks for the advice Jack! Den söndag 23 september 2018 kl. 10:53:36 UTC+2 skrev Jack Bailey: Hi

9/25/18

Amonet, Jeremy Miles3

9/5/18

Latent growth curve model: how to include regressors?

Thank you Jeremy, I should have provided more context. The reason I did not want to regress the

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Latent growth curve model: how to include regressors?

Thank you Jeremy, I should have provided more context. The reason I did not want to regress the

9/5/18

janb...@googlemail.com, Terrence Jorgensen6

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

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negativevariance

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

Ajay Somaraju, … Yves Rosseel6

7/30/18

using factor scores as IVs in growth model

Thank you both so much for your informative responses. I really appreciate it :) On Mon, Jul 30, 2018

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using factor scores as IVs in growth model

Thank you both so much for your informative responses. I really appreciate it :) On Mon, Jul 30, 2018

7/30/18

Peter Kruyen, … Edward Rigdon4

6/15/18

Latent growth model with latent factors (categorical indicators) not identified

Thanks Edward, I will do; also, I will read a bit more on growth models.

unread,

Latent growth model with latent factors (categorical indicators) not identified

Thanks Edward, I will do; also, I will read a bit more on growth models.

6/15/18

Catarina Marques, kma...@aol.com3

6/9/18

simulating a latent growth model (with a mean structure)

I've already realized what I did wrong. 1 is missing to define the intercept and slope means. I

unread,

simulating a latent growth model (with a mean structure)

I've already realized what I did wrong. 1 is missing to define the intercept and slope means. I

6/9/18

Diana Meter, Terrence Jorgensen3

6/6/18

interactions between intercepts and slopes = growth curve modeling

Thank you very much for your quick and helpful reply, Terry!

unread,

interactions between intercepts and slopes = growth curve modeling

Thank you very much for your quick and helpful reply, Terry!

6/6/18

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