[Feature Request]: GSCA (generalized structured component analysis) to the SEM module

[hhwang87]

Description

I would like to kindly request the addition of GSCA (generalized structured component analysis) to the SEM model. GSCA is a component-based SEM method similar to PLSPM/PLS-SEM, which is already implemented in the module. However, GSCA offers more flexibility in model specification and estimation, often leading to more efficient estimates. An R package for GSCA, called “gesca,” is available (https://cran.r-project.org/web/packages/gesca/index.html) and can be used similarly to the lavaan or cSEM package. Please let me know if you have any questions or if I can provide further assistance.

Purpose

No response

Use-case

No response

Is your feature request related to a problem?

No

Is your feature request related to a JASP module?

SEM

Describe the solution you would like

No response

Describe alternatives that you have considered

No response

Additional context

No response

[tomtomme]

Thx for the fine request. We already discussed the possibility of this feature here: #2356 (comment)

So this will possibly be implemented at some point.

Since I am no expert on this module a possibly dumb question; you do not mean this, since this is prediction and not estimation, right?

[hhwang87]

Dear Thomas, Thank you very much for your response. I am pleased your team has the intention to implement GSCA into the SEM module. My colleagues and I are ready to assist with this implementation if needed. Regarding your question, JASP's PLS-SEM can utilize GSCA to estimate component weights, as provided by the cSEM package. This is actually the main reason I submitted my request. As I mentioned, GSCA is a more comprehensive method for component-based structural equation modelling, which can include PLS-SEM as a specific case. For instance, GSCA can accommodate models with cross-loadings and bidirectional path coefficients, as well as constrained (multi-group) models and measurement models only. It can also provide overall model fit measures. PLS-SEM cannot handle these more complex models or offer overall model fit measures. Using GSCA to obtain components in the models that PLS-SEM allows can be theoretically misleading, given the technical relationship between GSCA and PLS-SEM. This also limits the scope of component-based SEM to restricted cases supported by PLS-SEM. Additionally, as Florian, the cSEM developer, noted in request #2356, PLS-SEM currently provides a rudimentary and error-prone implementation of GSCA. In my opinion, once GSCA is fully added to JASP, the GSCA option in PLS-SEM can be safely removed. Please let me know if you have further questions. Thank you for your time. Best, Heungsun ================================================== Heungsun Hwang, Ph.D. Professor, Department of Psychology, McGill University 2001 McGill College Avenue, Room 712 Montreal, QC H3A 1G1, Canada Tel: 514-398-8021 Lab: sites.google.com/view/hwanglab<https://sites.google.com/view/hwanglab> ================================================== From: Thomas Langkamp ***@***.***> Sent: December 2, 2024 3:38 AM To: jasp-stats/jasp-issues ***@***.***> Cc: Heungsun Hwang, Dr. ***@***.***>; Author ***@***.***> Subject: Re: [jasp-stats/jasp-issues] [Feature Request]: GSCA (generalized structured component analysis) to the SEM module (Issue #3055) You don't often get email from ***@***.*** Learn why this is important<https://aka.ms/LearnAboutSenderIdentification> Thx for the fine request. We already discussed the possibility of this feature here: #2356 (comment)<#2356 (comment)> So this will possibly be implemented at some point. Since I am no expert on this module a possibly dumb question; you do not mean this: grafik.png (view on web)<https://github.com/user-attachments/assets/1a97541b-f825-4def-bc76-186de746d356> - Reply to this email directly, view it on GitHub<#3055 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AZJHZYGM7B5XIHT7EDBZS2T2DQL6BAVCNFSM6AAAAABSX2WV7CVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKMJQHA4TCNZZHE>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[tomtomme]

@hhwang87
only one regarding "My colleagues and I are ready to assist with this implementation if needed."
Anyone on your team who likes to code Qt/QML and R to implement this as a module?
See our dev-guide:
https://github.com/jasp-stats/jasp-desktop/blob/development/Docs/development/readme.md

https://github.com/jasp-stats/jasp-desktop/blob/development/Docs/development/jasp-adding-module.md

[EJWagenmakers]

Note that the JASP team is ready to assist in case you should like to contribute code!