Date:         Wed, 17 Aug 2011 05:43:07 -0700
Reply-To:     autumnwu <autumnwu88@gmail.com>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         autumnwu <autumnwu88@gmail.com>
Subject:      Help!SEM fitting index all failed,though reliability and validity
              test passed.Reason?!
Content-Type: text/plain; charset=UTF-8

Dear all brilliant members,

I am a new analyzing thesis data. Im conducting a survey about people's
behavior intention, but i came into a serious problem and i couldnt figure
out where goes wrong though i tried other way test it again. I need your
valuable opinion and kind help walking through this most difficult part for
me.

SPSS briefly reslut:

Proposed model: Factor 1-8, 8 independent variables, Factor 9-11, 3
dependent variables. (number of measurement items in brace)
Factor 1 (3)            Factor 6 (3)           Factor 9 (2)
Factor 2 (4)
Factor 3 (5)            Factor 7 (5)           Factor 10 (3)
Factor 4 (4)
Factor 5 (4)            Factor 8 (4)           Factor 11 (2)

1.Sample Collecting: Convenience sampling is adopted as a method collecting
questionnaires.82 valid questionnaires are received.
2. Reliability test: Factor 2,3,4,5,6,7,8,10,11 which Cronbach' α > 0.8 are
maintained, factor 1,9 which Cronbach'α around 0.6 are deleted.
3. Validity test: Measurement items which factor loading below 0.5 are not
invovled. Besides, measurment item which has two valid value which above 0.5
is deleted.So 1 measurement items in Factor 3 is deleted and two measurement
items in Factor 7 are deleted. After rotated SPSS again, all factor loading
is above 0.5, but Factor 2 stays one factor, Factor 3,4,5 reducted a new
one, Factor 6,7 reducted a new one, Factor 8 stays and Factor 9,10,11
reducted a new one. KMO and bartlett value all above 0.8.
4. Correlation test: All factor relations at 0.01 significance level under
Bivariate Correlation test.

AMOS test:
Modified model: Factor 1-4, 4 independent variables, Factor 5, 1 dependent
variables. (number of measurement items in brace)
New Factor 1 (4)            Factor 3 (6)           Factor 5 (5)
New Factor 2 (12)          Factor 4 (4)
Notes for model:
Minimum was achieved,
Chi-square=1022.214
Degrees of freedom=431
Probability level=.000
RMR=0.112,GFI=0.572,AGFI=0.508,NFI=0.617,TLI=0.710,CFI=0.732

!!! The result in SPSS test is kind of ok, but why the test in AMOS all the
fitting index are failed to meet the standardized level?! It has no relation
with the size of my questionnaire. It gives almost the same result or even
bit worse result when i doubled the number of my questionnaire. Also the
proposed model is supported by previous study. I couldnt get where goes the
problem what makes the modified model doesnt fit the test in AMOS. Any one
could give a reasonable answer or suggestion that i could looking for the
possible problem!! Thanks a lot for your time and patient!


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