Where to apply EFA (Exploratory Factor Analysis) and CFA (confirmatory factor analysis)?
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- Опубликовано: 11 мар 2021
- This video is an informative video to clarify the doubts in the minds of researchers about the application of #EFA and #CFA. It helps #researchers and Ph.D. #scholars to understand what to apply for modified questionnaires.
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Excellent sir one of the best i found in research methodology
Wonderfully explained. Many confusions cleared. Many thanks
very helpful thanks
Excellent sir.. Well explained 👍
very helpful video. thank you.
Super explanation. You make it simple
Very well explained 👍
Well explained
You explained it very well. Thank you Sir.
That's great. Keep watching and keep sharing
Sir, if I'm using two scales to measure a construct, both having different items, am I supposed to do EFA first
Thank you for the video, it is really helpful.
Sir can you please confirm if I can use CFA and qualitative data in a single descriptive study. I want to use a mixed method approach. So is it right if I use interviews and survey and use CFA for survey and thematic analysis for interviews. Also can this be called triangulation?
Thanks in advance!
yes, you can use it but for triangulation, you have to explain in the methodology section of the research that it includes different methods and theories.
Sir if we are taking the variables from previous studies and modifying the statements should we conduct efa or directly conduct cfa
Sir
Video is very good
Concepts were clear
I am a Research scholar planning to develop EFA and CFA model for QWL and WLB
Can u help me sir
Nice explanation sir, thank you. A question comes to me is that what if very few literature is available on any topic or let's say that some information is there but not from the concerned geographical area we want to research, in that case what will be the research type?
It's great that you liked the explanation. in your case, it will be Descriptive research. see 2:29. Don't forget to share it so that more and more people can get benefit from it.
Thanks a lot sir.Your videos are so helpful.They are easy to understand.This video cleared many of my doubts.
Now with due respect I want to ask a question.
My phd topic has three constructs and i developed the dimensions of one construct(mediator one)based on the themes generated from interviews.These dimensions are supported with the literature.The items of other two constructs are already developed.
Should i go for EFA for this paricular construct which i developed myself.
Or should i go for CFA .THANKS IN ADVANCE
Apologies for replying late. U have to see if the new model has majority of items of ur own, u have to go for CFA. Otherwise CFA will do. Basically CFA is for the old model or the items of the model with only less than 50% off items.
Sir, Can I use a questionnaire as it is, which is already created to identify factors effecting on some thing, in another country? and what analyzing method should I use?
yes, u can use it. just u have to give reference to the author who has created that questionnaire.
Sir, after your video, I have a doubt. I have identified factors affecting passengers satisfaction (public transport) from different papers and have accordingly framed statements/indicators for my questionnaire. Factors eg...comfort, punctuality and regularity, etc. So, no need for EFA now? Directly shall I go for CFA? I have almost modified all the statements. Some researchers have mentioned about comfort of seats in *comfort* factor and some in *tangibles* ,because of which I have almost modified almost majority statements under each factor..please advise the next step
Dear Kanwalpreet, in my video i have very clearly explained that if u are only modifying the existing scale you should directly go for CFA. EFA is for generating the variables and not the items of the variables. In your case if the variables are same then go for CFA. If you have changed the model and generated new variables with major change, go for EFA. I hope this answers your question. Best of luck and keep researching.
@@adilzia yes sir. Thanks a lot. Means a lot when you are helping people like us🙏
@@adilzia sir you are from which domain?
@@kanwalpreet I am basically from Marketing and Research Method is my interest. These days I am working on the systematic and bibliographic literature review using various software.
Dear Sir, Thanks for wonderful explanation A query Kindly reply.. I am trying to develop a Questionnaire for assessing the level of Happiness of school teachers... Gone through previous established scales, Shortlisted a few factors/ Domains on the basis of interviews and previous happiness/ wellbeing scales... Shortlisted a few specific statements in each domain.... Should I go for CFA directly or EFA required.... Would be great help if replied asap...Thanks
In the video, I have clearly explained that if u are only modifying the existing scale you should directly go for CFA. EFA is for generating the variables and not the items of the variables. In your case, if the variables are the same, go for CFA. If you have changed the model and generated new variables with major changes, go for EFA. I hope this answers your question. Best of luck and keep researching.
@@adilzia Thanks a lot for prompt response... Just want to add that variables/ domains are shortlisted after expert panel discussion (From different questionnaires/ scales of measuring wellbeing/ happiness) i.e. not based on single questionnaire instead from different standardized scales and then statements shortlisted in each domain from different scales mentioned to measure that particular domain/ variable as domains/ variables are overlapping as well.. Kindly comment
@@TeachersGurukul exactly what do you want me to comment on? It's a procedure that you want to follow to make a questionnaire. that's fine.
Hi,
There has been a popular mental health syndrome coined that has several components, and are associated with sexual abuse survivors . I would like to verify that the components are corrrect and can stand, and that these are a problems that are more associated with sexual abuse survivors than other types of abuse. Can we use CFA? or can you recommend other statistical methods? all variables are continuous, but we can also categorize. i was contemplating between CFA and Latent Profile Anakysis (LPA)
Dear ...., i don't have the details of your research questions and the associated objectives of your research. But generally, we use EFA to generate the variables and CFA to confirm that these variables are measuring what they should measure. In your question, I understand that you want to test if sexual abuse is associated with health syndrome. in this case, first of all, decide the Dependent and independent variables and based on the objectives use regression analysis.
Sorry, I have both nominal and ordinal variable in my questionnaire, i took items from previous stuies and translate from english to french. Which one should i choose between EFA and CFA to check reliability and validity of my questionnaire? or should i use both of them? Thanks for your reply.
see the video again. I have explained and discussed the conditions to apply EFA and CFA. to summarise you can see that how many variables are newly identified. if you think that the concept is altogether novel, go for EFA. if you are just updating the existing constructs in the scale, go for EFA.
@@adilzia okay, thanks a lot
Respected Sir, I developed questionnaire for my PhD research. I took factors from literature and developed own item statements from literature. I was applying EFA for factor Loading... So i think i should apply CFA... Is it?
Yes. EFA followed by CFA.
Sir i want to validate a questionnaire that is already existing in different countries for India do i need to do EFA or CFA
CFA is enough. you can refer to doi.org/10.3390/su14116563 paper
Thank you very much Sir for explaining the difference between EFA and CFA with such clarity. I have a question i.e., if we take items and constructs from existing studies that are already validated - do we still need to do an expert validation of the questionnaire or can we directly proceed for CFA? Would greatly appreciate your response, Sir. Best Regards.
if you take items and constructs from existing studies that are already validated you just need to apply CFA.
Happy researching.
@@adilzia Thank you very much Sir. Take care.
For CFA, dont we need EFA matrix table ? even if we translated the scale.
no need. use the same constructs and perform the CFA
What if we add a new construct in the existing model?? Is it still CFA??
If you add only one variable it is still CFA for the same model.
Thankyou sir!
RESPECTED SIR, CAN WE APPLY EFA TO THE DATA COLLECTED THROUGH OPEN-ENDED QUESTIONNAIRE. IF YES THEN HOW WE CAN APPLY
dear @raj kumar, it is not the questionnaire on which the EFA is applied, rather it is the data collected on the basis of a questionnaire is evaluated using EFA or other tools. In your case, if you have collected the data in open-ended questions then you have to convert that qualitative data into quantitative data to apply EFA. I hope it answers your question.
@@adilzia thank your sir, got your answer
To apply CFA for descriptive research ,should we first conduct EFA?
Dear @abhijat u have to understand the reason behind your analysis. There are different reasons behind CFA and EFA. we use EFA for factor reduction and CFA for model fit.
I am replying to your email question.
There are basically two types of hypotheses in your research.first related to influence or impact and second related to the difference between the two groups of respondents. The t-test and ANOVA are applied for the differences in the two or more groups. Multiple regression can be applied for the impact or influence. You need to adjust ur hypothesis. Talk to your research guide and streamline the hypothesis. Hope This answers your question.
Take care.
sir if we take different dimensions from different authors in one questionnaire like for example for
measuring green practices we take
energy, water,air etc
related statements in one questionnaire now can’t we use efa to check whether they correctly measure green practices ?
yes, if u have used different items of the scale from previously developed scales u have to go for EFA followed by CFA.
@@adilzia ok sir thank you
But if we want to extract factor and then compare factor with demographic variables then is there any need to use cfa?
@@anugrewal5693 that’s fine.
@@anugrewal5693 whenever u change or use the same scale u have to go for CFA. This is a part of the validity check for any scale.
@@adilzia okay sir cfa need to be used in combination with sem?
But if we don’t have model ?
Hello Sir I need help in my data analysis part can you please help out pls share your mail id if you can help me
sorry i don't provide coaching.