Factor Analysis on Factors
Hi Everyone: Good to join this group. I am doing exploratory factor analysis on several measures related to human personality development. The resulting factors are interesting. I am wondering if it is possible to do a factor analysis on the factors themselves? In this way, I hope to cluster the factors into "mega factors" (Neurosis-Passivity; Narcissism-Aggression, etc.). I don't know much about confirmatory factor analysis. Would the latter yield this type of information (i.e., higher level factors)? Thanks for your help, -Charles ...

Factor Analysis: Number of Factors
Hi, I have a very basic question in factor analysis - how many factors to menti= on in nfactor option while running a proc factor I can select how many factors I want to analyze by checking the scree plot = or by help of eigen value (>1), but if I run proc factor with nfactor=3D10= or nfactor=3D50 then loading on factors changes significantly and this eve= n changes the business definition of my factors. Please help me understand how to choose the optimal value of nfactor or if = there is a way by which we derive that value than what is that way Regards, Rajat _______________________...

Re: Factor Analysis on Factors
charles19 <charles19@SYMPATICO.CA> wrote >Sent: Jun 26, 2008 9:43 AM >To: SAS-L@LISTSERV.UGA.EDU >Subject: Factor Analysis on Factors > >Hi Everyone: > >Good to join this group. We're a fun bunch. :-) Nice to have you I am doing exploratory factor analysis on >several measures related to human personality development. The >resulting factors are interesting. I am wondering if it is possible to >do a factor analysis on the factors themselves? In this way, I hope to >cluster the factors into "mega factors" (Neurosis-Passivity; >Narcissi...

Factor Analysis-How many factors I need
I used the following statement for my Factor Analysis : ************************************************************ proc factor DATA=OUT.Baseline priors=smc msa preplot plot ROTATE=varimax SCREE; Var Quest1-quest21; Run; ******************************************************* Below is the part of the output: FACTOR ANALYSIS FOR 21 QUESTIONS IN base The FACTOR Procedure Initial Factor Method: Principal Factors Factor Pattern Factor1 Factor2 Quest1 0.45597 -0.19266 Quest2 0.66878 -0.24750 Quest...

Re: Factor Analysis: Number of Factors
Rajat, Take a look at: http://ssc.utexas.edu/consulting/answers/general/gen16.html HTH, Art -------- On Mon, 6 Jul 2009 06:38:31 -0500, Mathur, Rajat <Rajat.Mathur@DIAMONDCONSULTANTS.COM> wrote: >Hi, > >I have a very basic question in factor analysis - how many factors to mention in nfactor option while running a proc factor > >I can select how many factors I want to analyze by checking the scree plot or by help of eigen value (>1), but if I run proc factor with nfactor=10 or nfactor=50 then loading on factors changes significantly and this even changes the busines...

Re: Factor Analysis: Number of Factors #3
--- On Mon, 7/6/09, Peter Flom <peterflomconsulting@MINDSPRING.COM> wrote: > From: Peter Flom <peterflomconsulting@MINDSPRING.COM> > Subject: Re: Factor Analysis: Number of Factors > To: SAS-L@LISTSERV.UGA.EDU > Date: Monday, July 6, 2009, 6:18 AM > "Mathur, Rajat" <Rajat.Mathur@DIAMONDCONSULTANTS.COM> > wrote > > > > >I have a very basic question in factor analysis - how > many factors to mention in nfactor option while running a > proc factor > > > > Basic, but far from simple or easy! True, very true!!! > &...

Re: Factor Analysis-How many factors I need
Peter L. Flom, PhD Assistant Director, Statistics and Data Analysis Core Center for Drug Use and HIV Research National Development and Research Institutes 71 W. 23rd St http://cduhr.ndri.org www.peterflom.com New York, NY 10010 (212) 845-4485 (voice) (917) 438-0894 (fax) >>> Irin later <irinfigvam@YAHOO.COM> 03/19/06 6:38 PM >>> wote <<< That is why I would like to FORCE program to generate 3 factors for my Baseline survey too instead 2 which output gave me. Actually specs are set at this time .I mean which question belong to which score (physical, emotio...

Re: Factor Analysis: Number of Factors #7
Something is seriously wrong with the Gmail editor It complete scrambles m= y text! I edited this version in Word: I make extensive use of both Factor Analysis & Principal Components Analyses. I mostly use both tools to reduce dimensionality in data sets of multidimensional reference axes (n-dimensional coordinate systems)--which are bipolar in nature. I deal with negative factor (or component) loadings by "reflecting" them so that all loadings are positive. In my work I deal with the mind, and I take an unapologetic approach that accepts the multidimensional nature of the ...

Re: Factor Analysis: Number of Factors #2
"Mathur, Rajat" <Rajat.Mathur@DIAMONDCONSULTANTS.COM> wrote > >I have a very basic question in factor analysis - how many factors to mention in nfactor option while running a proc factor > Basic, but far from simple or easy! >I can select how many factors I want to analyze by checking the scree plot or by help of eigen value (>1), but if I run proc factor with nfactor=10 or nfactor=50 then loading on factors changes significantly and this even changes the business definition of my factors. > >Please help me understand how to choose the optimal value of ...