SEM with AMOS: From Zero to Hero (20: Structural model assessment)
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- Опубликовано: 21 авг 2024
- Learn everything you need to know to apply structural equation modeling (SEM) using AMOS in your research!
Video 20: Structural model assessment
Dr. Saeed Pahlevansharif
Download all files that I used in my SEM workshop from this link:
drive.google.c...
I have designed this hands-on course to provide you an intense yet enjoyable instructional experience that focuses on a large number of both introductory and advanced topics in SEM using the latest version of one of the most well-known software package, IBM AMOS (Analysis of Moment Structures). In this course I will provide the materials and instruction that you need to both develop a good understanding of SEM and to be able to thoughtfully apply a variety of basic and advanced models to your data. More specifically, this course will cover a broad range of topics such as
• data preparation,
• model development,
• model fit assessment using various indexes,
• construct reliability and validity assessment using various methods,
• different methods to improve your model,
• structural model assessment,
• hypothesis testing,
• mediation using Baron and Kenny approach
• mediation using Sobel test
• mediation using bootstrapping method
• moderation,
• and multi-group analysis
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I commented on one of your SEM with AMOS lectures a few weeks ago when we were just learning how to use AMOS. We've already defended our thesis and we got good comments. Thanks to your tutorials!!
Congratulations Alyssa! :)
Excellent, I'm getting profound knowledge from these videos.
Thank you so much متشکرم بابت توضیحات خوبتون😊
Thank you Sir for a clear presentation of the topic.
Thank you for watching
Dear Prof. thank you for tutoring AMOS in such an explicit way. Please make an exclusive video on Type 1 and Type 2 errors. Though I know what it means but I appreciate it if you spare some time with some practical examples. Also, how to interpret it in writing. Thank you in advance Prof.
Thank you for the suggestion. I will make it soon hopefully
thanks alot dr.😊😊
Sir, do we need to put covariance in our independent variables in structural model even though in our hypothesis/conceptual model we do not correlate those?
Helpful, Thank you Prof
I appreciate !!!!
Hi Dr.
Thanks so much for your efforts.
Actually in Amos , p value is two tailed , However, the hypothesis that you provided here are one taile, so we need first to adjust p value. Further more , critical value (CR) will be 1.645 instead of 1.96 in order to say that support or not.
Well... I understand what you mean. But some researchers suggest you use the 2 tailed p value regardless of your hypothesis. This is somehow safer
@@saeedsharif
That's great Dr
Do you mind to share with us reference regarding this view?
Is it possible to run a model with mediators and moderators together in a single go and have the results? or for moderators, will I have to run separately?
Yes. You can run the whole model in one shot.
Why do the exogenous variables all have to be covariated? Is there a paper I can refer to in order to justify the covariances?
Hello kind sir, do you have a video on model respecification? What does it mean when the modification indices suggest both variable X predicting variable Y, and variable Y predicting variable X. Would the respecified model have a double headed arrow? Or does this suggest a latent factor that both of these load onto? What about the case when you have this amongst three variables?
Thank you so much Dr. Saeed. I really appreciate all the valuable knowledge that you addressing in your channel.
I have a question. Would that be enough to measure the validity of an instrument (convergent and discrimination validity)?. I have seen some literature comparing other instrument. (In my case I have no instrument to corrlate it with). Would Factor analysis is useful to use in this case like what you did ( convergent + discriminate validity). Thank you so much.
Hi Abdullah. Thank you for your feedback.
Of course you can evaluate other forms of validity like nomological validity, face validity, content validity, etc. too. However, many studies just evaluate convergent and discriminant validity. This is very common.
Wonderful! Thank you so much Dr. Saeed.
@@abdullahkhali No worries
Sir, you have given us indispensable help, thanks a lot, I just followed you in the CFA model so here, but it must be to maintain the covariance between the independent variables?, cuz when I did that I didn't find a significant relationship to the dependent one. waiting ur respoonce, am totally confused
Only exogenous variables should be covariated
Error termd on endogen variables
Standardised
Correct!
"***" asterisks means p value < 0.001
Hi Sir,. why have not you explained the direct and indirect impact of mediation?
sir, what if standardized regression weights are greater than 1. Should I consider them?
Hi Prof! I just wanna ask what if the CFI doesn't fit in the model what are we gonna do to make it fit to the model?
Dear Prof. Do we always need to covariances the independent variable in our structural model?
Hi Naufal,
Yes. You should.
@@saeedsharif Do you have a referrence that cited where we should covariance the independent variable? I might need that one, since I try to find it on the web but cannot found it until now. Thank you in advance.
sir, what if standardized regression weights are greater than 1. Should I consider them
This mean you have heywood cases and you should fix the issue. There are different methods to sort it out. Please search for "heywood cases". All the best
Hi Sir, first of all thank you very much for your video. I have a quick question what if the result is negative but significant. How do we interpret it?
It depends on your hypothesis. If you have a one-tailed hypothesis (e.g. a positive relationship between X and Y) and your results are negative and significant, this means you failed to reject the null hypothesis. In this case, you should explain the findings using the literature or context of the study. Sometimes, the explanation is interesting and adds value to the current literature. This may even increase the chance to publish your paper!
Dear Profef, I hope you are well, thank you very much for your great videos . I would like to know how to proceed if we have a fit CFA model but unfit SEM model (CFI
Hi Chraibi,
You can improve the model fit with the changes that you make in the model. You also should refer to other indices. We don't rely on only one index. Have you watched my CFA video?
Dear Prof.,
What if my estimates is 1.000 and there is blank on my P value? is it significant?
the P value should be so small. You can change the settings to see more decimal points.
Thanks Dr. If I have a multidimensional construct, how can I draw paths among constructs to test the hypotheses?
Hi Dr, why my regression weight is more than 1.0?
Sir i have issue in this
When i click on calculate estimation there's an error show
An error occurred while attempting to read the file .......
Conversion from string ..... Date to type is not valid
.
.
.
.
Sir how i solve this
it means your data is incomplete
Sir, what values a we have to report in sem,is it different from path analysis values ?
Sir is it possible for you to do SEM at Amos for research scholar??