Re: factor analysis
Posted by
Art Kendall on
May 03, 2014; 11:57am
URL: http://spssx-discussion.165.s1.nabble.com/factor-analysis-tp5725781p5725782.html
If you are dealing with
scales, you are mainly interested in what is common among the
set of items that are designed to fit that construct. So you
would use the principal axes form of factor analysis not
principal components which tries to account for the common and
unique variance.
Where did the scales and Items come from? If these are well
established scales the main use of a factor analysis is to check
the scoring key.
what did you use for stopping rule? I.e., how did you decide how
many factors to retain?
Did you use varimax rotation?
Did that item load cleanly on the wrong factor, or did it split
with the factor you thought it belonged on?
Is your group of respondents much different from the group(s) the
scales were originally established on?
How many respondents do you have? Did the scale developers have
large sets of respondents?
Art Kendall
Social Research Consultants
On 5/3/2014 3:54 AM, vonvon [via SPSSX Discussion] wrote:
I have a likerts scale with 5 questions for each
variables. I have 6 variables in total including the DV. I ran the
principle component analysis and my items loaded to the component
is did not belong to.(eg: Q1 should be in the component 1 but the
result showed in component 2)
Am I run the test wrongly or is that any other way to test factor
analysis?
Any question is that correct to run the variable one by one or is
it a must to run all the variables together?
Art Kendall
Social Research Consultants