Questions tagged [amos]
AMOS is IBM SPSS AMOS, proprietary structural equation modelling software.
66
questions
1
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1answer
20 views
Should allowing multiple DVs to covary in SEM influence beta coefficients?
I am running a replication study to test a model with 8 IVs and 3 DVs (all variables are continuous).
In the initial study, I had a moderate sample (≈ 200), and thus relied upon multivariate multiple ...
2
votes
1answer
66 views
Why does this formula produce $p_{2}$ probabilities for Mahalanobis distances?
At the IBM website it is written that
The p1 probabilities are standard probabilities of an observation from
a multivariate normal distribution being that far or further from the
centroid, ...
asked May 7 at 1:50
user1205901 - Reinstate Monica
9,68317 gold badges67 silver badges130 bronze badges
0
votes
0answers
60 views
Comparing two CFA models in AMOS (only 4 items per 1-2 factors)
I am trying to test in AMOS the discriminant validity of a 3-item measure (items "1, 2 and 3" against a 1-item measure "item Z" (both are Likert scale questionnaire instruments), by comparing whether ...
0
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1answer
51 views
Testing Measurement Invariance on data with small sample size
I‘m wondering what is the best way to test measurement invariance on data with small N, since CbSEM requires at least N = 200, or 5 - 10 cases for each indicator. For example I want to test a ...
0
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0answers
12 views
Goodness-of fit indices in CB-SEM AMOS
does any one know whether I should classify the goodness-of fit indices under the structural model or the measurement model? Thanks.
0
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1answer
29 views
Help with Interpreting results from 2 models: Variance explained vs Indirect Effects?
I am comparing two models using Path Analysis (pictured).
Model A explained 49% of the variance in my DV.
Model B (which is the same as Model A + an additional mediator) explained 48% of the variance ...
0
votes
0answers
19 views
AMOS, cross-lagged analysis, two-waves - error “The model has zero degrees of freedom”
I have performed cross-lagged analyses, two waves (time 1 and time 2) in AMOS following the four steps: the first one autoregressive, the second normal causation model keeping autoregressive paths, ...
0
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1answer
17 views
Multi-level data query
We want to find the relationship between supervisor's narcissism and subordinate's job commitment. We have collected data from 600 supervisors and 1800 subordinates reporting to them (three ...
0
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1answer
29 views
How to assess the significance of r2 values across models
I want to know whether (and how) I can test whether the difference in r2 values across two SEM models is significantly different.
I have conducted a study where participants completed one of two ...
0
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1answer
46 views
SEM 4 questions - testing linearity, sum score, number of variables, independent variables
For my master thesis I'm making a structural equation model.
However, I do not have much experience with this. So here are some different questions.
I read that one of the assumptions important for ...
0
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1answer
298 views
Interpretation and formulation of SEM path coefficients?
Trying to interpret and write down my SEM results, but not sure if this is 1. correct and 2. well formulated. This is what my models and parameters look like (first unstandardized, then standardized):
...
0
votes
1answer
42 views
How exactly do I calculate the power in my SEM?
I am trying to calculate the power in my SEM analysis post-hoc. How exactly should I do this? What is the power for the R-squared result of IT-T2 and IT-T3?
Background info: Sample size is 255. IT ...
1
vote
1answer
457 views
AMOS: Model is unidentified requires 26 additional constraints! How to fix? [closed]
After running model on AMOS I am not getting any output path and this note appears in the text output: "The model is probably unidentified. In order to achieve identifiability, it will probably be ...
1
vote
1answer
48 views
High value of R-squared correlation on behavioral intention while very low value of R-squared correlation on actual use of mobile shopping app
I have been working on antecedents of mobile shopping with UTAUT-2 model combined with the constructs of trust and perceived risk. I am using a sample of international students for my study. I wanted ...
0
votes
0answers
2k views
“The model is probably unidentified” AMOS
I am doing a CFA in AMOS and I keep getting the error message: "The model is probably unidentified. In order to achieve identifiability, it will probably be necessary to impose 1 additional constraint....
1
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0answers
190 views
Poor model fit - Difference between SEM and MLR
For a study I am researching a quite simple research model (7 IVs - 1 DV), in which I am not interested in underlying relations between the IVs: the relation between the IVs and the DV is all that ...
0
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0answers
361 views
Extracting Factor Scores of Latent Variables after CFA in AMOS
I plan to extract the latent variables' factor scores after conducting Confirmatory Factor Analysis (CFA). I will use these factor scores as explanatory variables for my next statistical procedure - ...
0
votes
1answer
102 views
AMOS: CFA testing invariance, but cannot name intercepts
I'm using AMOS to run a 2-factor model with 5 indicators each (10 in total). I'm assessing the invariance. So I'm assessing the invariance for sex. While the configural and metric invariance worked ...
0
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0answers
113 views
Is scalar invariance required to compare relationships between groups (but not comparing differences in means)
I am undertaking multigroup comparisons with the aim of comparing structural relationships between groups. I have established configural and metric invariance but do not have partial scalar invariance....
1
vote
0answers
115 views
Significant direct effect and non significant TOTAL effect
I have a cross-lagged model with 3 waves and two variables. Here the regression`s paths.
...
0
votes
1answer
190 views
measurement error, path analysis
I have used a path analysis without any latent variable. I know that measurement error is a huge issue in mediation models. I also know that parceling is one way to deal with measurement error, but ...
2
votes
1answer
2k views
Structural equation modeling with repeated measures
I have data that I thought would lend itself easily to structural equation modeling, but I cannot figure out one issue -- how to handle repeated measurement in SPSS AMOS. Participants were randomly ...
0
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1answer
295 views
Can dichotomous /binary data (0-1) be converted into Likert scale data (1-5)?
Read somewehere that one can simply put 0's of binary to 1 of Likert and 1's of binary to 5 of Likert,Is it the traditional way?
Just for clarification,if someone is familiar with AMOS,i have the ...
2
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0answers
70 views
Is it correct to claim the existence of an 'indirect effect' in A>B>C chain when no significant A>C path is found? Or what else should I call it?
I am working on a SEM where I hypothesize a causal chain where A influences B, which in turn influences C. The data are from a 2x2 between-subjects experiment, N = 297.
All the goodness of fit ...
1
vote
0answers
50 views
Left censored dependent variable in SEM
I'm working on a structural equation model in Amos. I have two independent variables, 5 mediators and a left censored dependent variable. The dependent variable is either 0 or a positive amount in ...
1
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0answers
79 views
SEM: Acceptable to report standardized factor loadings that is exactly 1.00 (not above)?
I have a situation where an indicator pathway has a factor loading that is exactly 1.00 (in the AMOS output the estimate is .998).
The model converges, is positively defined and has a decent model ...
1
vote
0answers
374 views
Repeated Measures in SEM
I would have a question about using Structural Equation Modeling for comparing repeated measures results. I have a one DV which has been measured 4 times and corresponds to 4 different experimental ...
4
votes
0answers
2k views
Missing data in path analysis using AMOS — data imputation, EM, multiple imputation, or ML?
This question reflects the dilemma I face in analyzing path models using AMOS with missing data.
I have a dataset with n = 116, missing rate = 6% (Missing at Random) for a full path model with about ...
1
vote
1answer
3k views
How to report the results of a complex path analysis?
I started with a model with 5 IVs and 7 DVs. This model had a poor fit (RMSEA = 0.405, CFI=0.760 or so). Most of my hypotheses were not confirmed, i.e. many regression coefficients were not ...
4
votes
2answers
4k views
Good Multivariate normality coefficient but suspicious univariate indices in AMOS, what to do?
We are conducting a research with 15 observed variables. Before starting a SEM model based on our data-set (of 531 cases), we tried to check for uni-variate & multivariate normality problems. The ...
1
vote
1answer
377 views
The results of EFA are different from those of theory, how to conduct CFA?
I have a dependent construct (attitude) which has at least 2 dimensions in theory (affective & behavioral). The scale measure adopted for this research is found to have 2 or 3 dimensions in ...
2
votes
1answer
1k views
amos: zero chi-quare and zero df confusion
I have five concepts in a theoretical model (animosity, ethnocentrism, religiosity, patriotism, satisfaction). The EFA result shows that there is only one actor for each construct:
f1 (animosity) ...
2
votes
0answers
754 views
Can Amos SEM deal with binary dependent variable?
Hi I'm doing a SEM using AMOS. The outcome is the success of consumer satisfaction, which is measured by 2 questions.
How satisfied are you? (1-7)
How likely would like to recommend ? (1-10)
If ...
1
vote
0answers
225 views
Bayesian SEM in AMOS - suggest resources?
I'm looking for resources regarding Bayesian SEM estimation using AMOS built-in procedures (I have ordered categorical data).
Google gives some basic resources on theory, but not so much on ...
1
vote
0answers
195 views
Measurement Invariance
My colleagues and I are analyzing data by using multi-group SEM.
Background
We would like to know how individuals' commitment in a specific leisure activity influences their well-being. Specifically,...
2
votes
1answer
868 views
Invariance test after CFA model
Should I do invariance test after my CFA model was created and model fits were good? Should I do common methods bias, too? If so, how do you do these procedures in AMOS?
1
vote
1answer
882 views
CFA in Amos - Is my model correct for my analysis?
I want to do an CFA on a questionaire with four subscales in my sample, because I need to know, if they are independent from each other.
I added all items to each subscale and then drew the ...
2
votes
1answer
1k views
Creating composite vairables in Structural Equation Modeling
I was wondering if you can help me. I want to run a pathway model using composite variables. Each composite variable is made up of 3 or 4 observed items. To create the composite variable to draw my ...
0
votes
0answers
132 views
Is this mediation or a simple path?
This is my model adapted from a study. I want to know whether I can only study it as a path analysis without studying mediation effect (1 $\longrightarrow$ 5 direct effect, as well as indirect effect) ...
1
vote
0answers
370 views
When fitting a model in Amos with ordinal data do I use Bollen stine adjustment or Baysian techniques?
I am trying to run a model validation/fit in AMOS using 18 items and three factors. The data is ordinal (1-4 scale) for each item. My data is non-normal both on a univariate and multivariate level. I ...
1
vote
0answers
786 views
Structural Equation Model design through AMOS, interpretation help
I have calculate the estimates through Maximum Likelihood procedure with model of six latent variables(presented in big ellipse) with respective observed variables (presented in rectangle) in AMOS 20....
0
votes
0answers
954 views
SPSS Amos Binary Outcome - Model Fit
I was just wondering if anybody could help me, I'm conducting a path analysis in SPSS Amos with a binary outcome. I've specified the variable as binary using Tools>Data Recode, I've then calculated ...
1
vote
1answer
4k views
How to create item parcels in SPSS Amos?
I am trying to run a SEM to see the causal relationship among latent variables. I ran the CFA and SEM using Amos, but I realized that the model is very complicated since one factor, which I originally ...
-1
votes
2answers
2k views
Can AMOS be used to perform logistic regressions?
I need to compare 11 groups of data, for the same relationship.
My first thoughts were to create 11 regression equations (one for each), and to compare parameters between groups.
Problem is that ...
2
votes
2answers
11k views
What test should I perform on a structural equation model?
This model is a replication of an earlier study. After factor analysis in SPSS, I need to test my hypothesis (as you can see there are 7) all should give significant positive relation with each other. ...
0
votes
0answers
2k views
Covariance between factors in CFA (Amos)
I ran a Confirmatory Factor Analysis (CFA) in Amos and obtained a model with high covariance between the factors. James described this covariance in his video as alarming.
What can I do to tackle ...
0
votes
1answer
2k views
How do I convert unstandardized RMR estimates into standardized RMR estimates?
I am having difficulty turning unstandardized RMR estimates from AMOS software output in a SEM into standardized estimates to enable suitable interpretation. Can someone give me advice on where to ...
1
vote
1answer
207 views
Why did fixing the covariance value cause AMOS to mis-estimate variance?
I have 100 data points on two variables, a and b. The correlation between the two is .3 and the SD is 1.
When I run the ...
asked Mar 25 '14 at 8:29
user1205901 - Reinstate Monica
9,68317 gold badges67 silver badges130 bronze badges
3
votes
3answers
374 views
Removing parameters in SEM when $\chi^2$ value and DF are 0
I am VERY new to SEM. I ran a model where I obtained 0 DF, so it could not compute the fit. So, I am left to cut out parameters. HOWEVER, I'm not sure where I can cut them in my particular case. I ...
3
votes
0answers
1k views
How to get confidence intervals for specific indirect effects in Amos?
Say I have an SEM model with 1 predictor variable (IV), 2 mediators (MV1, MV2) and 1 dependent variable (DV). Amos reports combined indirect effects for an IV on a DV. So the combined indirect effect ...
