How does oblimin rotation method affect confirmatory factor analysis in lavaan?

chonasson 01/19/2017. 1 answers, 166 views
r confirmatory-factor lavaan factor-rotation

I am conducting a CFA on a questionnaire with 4 factors. I know that the exploratory factor analysis to obtain theses 4 factors was done using oblimin rotation. I am now wondering, if this affects the model I have to build with lavaan-package in R.

Following the tutorial on the lavaan website I built the following model:

cfa.model <- 'factor1 =~ item1 + item2 + item3 + item4 + item5 + item6
               factor2 =~ item7 + item8 + item9 + item10 + item11 + item12
               factor3 =~ item13 + item14 + item15 + item16 + item17 + item18
               factor4 =~ item19 + item20 + item21 + item22 + item23 + item24'

As the factors were calculated using oblimin type rotation I am not sure if I have to allow correlations between the factors and if so, how to include this in my model?

Your help is highly appreciated!

1 Answers

Jeremy Miles 01/19/2017.

It doesn't make any difference where your model comes from. Lavaan doesn't know that the model comes form an EFA, or that you used oblimin (or any other) rotation.

You should always include correlations between your factors, unless you have a very good reason to believe that they are correlated zero.

Lavaan includes factor covariances (and factor variances) by default when you use the cfa() function. You can see in the path diagram on the page that you reference that there are covariances between the factors, even though these weren't specified in the model syntax.

Additional info:

Lots of people like the defaults, but I'm easily confused when using the different functions (cfa(), sem(), lavaan()) and I forget what is included by default and what is not, so I like to specify everything.

You specify a factor variance using:

factor1 ~~ factor1

And a factor covariance using

factor1 ~~ factor2

You'll find that adding those makes no difference to the model (because cfa() puts them in by default.) - Download Hi-Res Songs

1 Alan Walker

Diamond Heart flac

Alan Walker. 2018. Writer: Alan Walker;Sophia Somajo;Mood Melodies;James Njie;Thomas Troelsen;Kristoffer Haugan;Edvard Normann;Anders Froen;Gunnar Greve;Yann Bargain;Victor Verpillat;Fredrik Borch Olsen.
2 Sia

I'm Still Here flac

Sia. 2018. Writer: Sia.
3 Cardi B

Taki Taki flac

Cardi B. 2018. Writer: Bava;Juan Vasquez;Vicente Saavedra;Jordan Thorpe;DJ Snake;Ozuna;Cardi B;Selena Gomez.
4 Little Mix

Woman Like Me flac

Little Mix. 2018. Writer: Nicki Minaj;Steve Mac;Ed Sheeran;Jess Glynne.
5 Halsey

Without Me flac

Halsey. 2018. Writer: Halsey;Delacey;Louis Bell;Amy Allen;Justin Timberlake;Timbaland;Scott Storch.
6 Lady Gaga

I'll Never Love Again flac

Lady Gaga. 2018. Writer: Benjamin Rice;Lady Gaga.
7 Bradley Cooper

Shallow flac

Bradley Cooper. 2018. Writer: Andrew Wyatt;Anthony Rossomando;Mark Ronson;Lady Gaga.
8 Bradley Cooper

Always Remember Us This Way flac

Bradley Cooper. 2018. Writer: Lady Gaga;Dave Cobb.
9 Kelsea Ballerini

This Feeling flac

Kelsea Ballerini. 2018. Writer: Andrew Taggart;Alex Pall;Emily Warren.
10 Mako

Rise flac

Mako. 2018. Writer: Riot Music Team;Mako;Justin Tranter.
11 Dewain Whitmore

Burn Out flac

Dewain Whitmore. 2018. Writer: Dewain Whitmore;Ilsey Juber;Emilio Behr;Martijn Garritsen.
12 Avril Lavigne

Head Above Water flac

Avril Lavigne. 2018. Writer: Stephan Moccio;Travis Clark;Avril Lavigne.
13 Khalid

Better flac

Khalid. 2018. Writer: Charlie Handsome;Jamil Chammas;Denis Kosiak;Tor Erik Hermansen;Mikkel Stoleer Eriksen;Khalid.
14 Lady Gaga

Look What I Found flac

Lady Gaga. 2018. Writer: DJ White Shadow;Nick Monson;Mark Nilan Jr;Lady Gaga.
15 Deep Chills

Run Free flac

Deep Chills. 2018.
16 Dynoro

In My Mind flac

Dynoro. 2018. Writer: Georgi Kay;Feenixpawl;Ivan Gough.
17 Charli XCX

1999 flac

Charli XCX. 2018. Writer: Charli XCX;Troye Sivan;Leland;Oscar Holter;Noonie Bao.
18 NCT 127

Regular (English Version) flac

NCT 127. 2018.
19 Lukas Graham

Love Someone flac

Lukas Graham. 2018. Writer: Don Stefano;Morten "Rissi" Ristorp;Morten "Pilo" Pilegaard;Jaramye Daniels;James Alan;David LaBrel;Lukas Forchhammer Graham.
20 Rita Ora

Let You Love Me flac

Rita Ora. 2018. Writer: Rita Ora.

Related questions

Hot questions


Popular Tags