Structural Equation Modeling is a multivariate technique popular in social sciences. It is based on formulating a set of linear relations between variables, some of which may be latent, and estimating the whole system, typically by analyzing the covariance matrix of the observed variables.

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Correlation is moderate but Path coefficients (in pls-sem) show insignificant results

I am performing PLS-SEM analysis (usng plspm package), the outer loading's are significant as CI do not include zero on any of them However, large number of path coefficient's (i.e, inner model)are ...
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Structural Equation Modeling [on hold]

How can we develop Structural Equation modeling ?E.g. Scientific Model.in so many papers i have observed it.basically Emerald publications and one more thing,which are the software that can help me ...
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4 views

Is it OK to correlate error covariances in LISREL?

Is it valid to let the error covariances of two variables belonging to two different latent variables to correlate? in LISREL for example
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16 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 ...
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11 views

Bayesian SEM in AMOS - suggest resources?

I'm looking for resources regarding Bayesian SEM estimation using AMOS built-on procedures (I have ordered categorical data). Google gives some basic resources on theory, but not so much on ...
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36 views
+50

Construct validity via SEM

It's often seen that convergent and divergent validity of a construct is checked via manifest correlations. I asked myself if such an approach can be replaced by testing a whole SEM containing the ...
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12 views

Covariance between exogenous variables

I am new to SEM and am finding my way around Amos. I am wondering if exogenous variables always have to be declared as covarying even if there is no theoretical reason why they should and they are ...
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14 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. ...
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1answer
20 views

Parameter Estimates in SEM

I am trying to understand how parameter estimates in structural models are calculated. I have searched through various SEM textbooks, journal articles, etc. and have not found a good description of ...
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1answer
31 views

SEM - sample size and power

Muthén & Muthén offer a MPLUS based syntax for calculating sample size and power on SEM, using a Monte Carlo simulation. https://www.statmodel.com/download/FinalSEMsingle.pdf Is there any ...
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23 views

Book on structural equation modelling/ confirmatory factor analysis

Is there any "state of the art" book on SEM/CFA that you can recommend? I am looking for something that offers both some theory and some practice and I am using R with lavaan. I am a psychologist ...
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22 views

linear path models vs. pls path models (structural equation models)

Assume we have the following linear path model: Structural (inner) model: $Y_{1} = \beta_{1}Y_{2}+\theta_{1}\delta$ Measurement (outer) model: $X_{1} = \lambda_{1}*Y_{1}+\epsilon_{1}\delta$ ...
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20 views

Planned missing data design not converging

I recently ran an experimental study with a planned missing design. Participants were randomly assigned to one of four groups that dictated which portion of a 26-item unidimensional measure they ...
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23 views

Validating formative model - statistical analysis

Based upon literature I have developed a model which I want to validate. Data gathering will be done with the use of surveys. My knowledge of statistics, or more the lack thereof, has raised some ...
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1answer
30 views

How do I combine various factors/variables to a single factor/variable

I have various products and for each product I have 5 types of cost(not just monetary cost) variables associated with it, the value of each variable for any product is a positive integer. I want to ...
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11 views

Is SEM appropriate for this problem?

I want to estimate some latent variables but I'm not 100% sure that Structural Equation Modelling is the correct way to do it, or if there are any easier solutions. I have a pretty basic graph <50 ...
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44 views

How to use formative indicators in covariance-based SEM with lavaan?

I'm trying to build a covariance-based structural equation model (SEM) using both reflective and formative specifications of latent variables. I use the sem ...
2
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1answer
42 views

Latent variable values in structural models

I am beginning to go through SEM textbooks and research in order to understand the logic and reasoning for the analysis. I believe that I will be using this type of analysis in the near future for my ...
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0answers
21 views

r package: CFA and missing data

I am running confirmatory factor analysis (CFA) with r. As I have several missing observations, I get two series of results, on "used" (152) and "total" ...
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0answers
145 views

How should I interpret the generalized squared multiple correlation?

I am testing this model in SPSS AMOS. The value of .23 above the top right corner of timedrs is the squared multiple correlation for that variable. I also ran the same analysis as two multi-step ...
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1answer
41 views

Is structural equation modeling (SEM) just another name of confirmatory factor analysis (CFA)?

I am reading some material about structural equation modeling. I found it to be extremely similar to confirmatory factor analysis - modeling a construct as the linear combination of several other ...
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18 views

How to fix a scale of latent variable measured by dichotomous indicators in SEM

How can I fix a scale of latent variable measured by dichotomous indicators in a structural equation model to estimate the mean of that latent variable? I know the mean of that variable (because I ...
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0answers
39 views

What is the phi matrix in SEM? [closed]

How is it found in the output? I am trying to do confirmatory factor analysis using sem function in R. Everything works fine, except I don't know how to obtain phi matrix. Below is my model ...
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1answer
68 views

SEM: What is measurement model?

I would like to know the definition of measurement model in SEM. Is it only about the latent variables? (THat's what I seemed to see what I google.) But I remember long time ago I read somewhere that ...
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1answer
43 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?
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15 views

SEM Model - Factor Analysis

I am attempting to build an SEM model for the fulfillment of my post-graduate course. For the model I have attempted to do reliability analysis with Cronbach alpha and the results are depicted below: ...
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8 views

How to validate a model/hypothesis with multi-level model, in which one latent variable is connected to latent variables and no observed variables

I am using SEM library of R. Below is the model that I wish to test. How can I define this model to push into SEM ? Thanks.
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2answers
126 views

Questions on multiple imputation with MICE for a multigroup-SEM-analysis? (including survey weights)

I am planning to do a multigroup SEM analysis. I gathered survey data and calculated a survey weight. Some of my variables have item nonresponse (mostly around 5% missings). I´ve decided to use ...
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1answer
21 views

Factor loading in SEM

i have run a SEM model which has number of explanatory variables. in order to improve the GOF on my model i remove those variables which has low factor loading. but this affects the factor loading of ...
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26 views

How should I calculate required n for minimum power of a sequence of parallel or simultaneous tests?

I am concerned with the practical situation in which I design a 'no-budget' split-ballot 2 x 1 experiment. We have money for $n=80$ cases in total, thus $n=40$ in each of two groups. In total I will ...
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16 views

Best Methodology

I am currently designing a research project on mental health attitudes. I want to test a model that should explain the data. I have 5 variables that should lead in an almost linear causal pattern of ...
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17 views

Can I specify the sign of a coefficient in sem model?

Say there is a sem model that I would like to explore: ...
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2answers
55 views

Regression analysis or Structural Equation Modelling

I have a 26 items questionnaire refined by running Common Factor Analysis. As a result, I got 4 factors (f1, f2, f3, f4). Each factor is measured by 6-7 items in the questionnaire. These four ...
2
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1answer
37 views

Does an underpowered mediation/moderation SEM have an increased chance of Type I error?

A study I'm familiar with has been encouraged by its review board to take more participants. This seems a sensible request on general grounds, but the reviewers suggested that it was essential to ...
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18 views

SEM design on dyadic data. Please help!

I have two surveys, and one is implemented to counselors. The questions ask about they feel about their relationship with their administrator. It has have two dimensions, let's say d1 and d2. I have ...
2
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1answer
35 views

How to use factor analysis / PCA / regression for data having serial IV and DV?

I have data regarding effect of a food chemical on blood and urine levels as well as effect on blood sugar and cholesterol. So I have following variables: ...
2
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1answer
56 views

Statistical models for Obesity data

I have a data on obesity status of women in a country. This data is based on across sectional study. Now I want to find the determinants of obesity among the women. Here dependent variable is binary ...
3
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1answer
49 views

Studying complex systems (complexity)

Complex socio-technical systems is one my research interests. Since I plan to further study such systems and related phenomena, I've done a bit of reading and ran across various books, such as Bar-Yam ...
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1answer
68 views

Multilevel Modeling in stata

I would like to make a model that calculates the probability of disease. Range of variables are following: disease ~ (0, 1); score ~ (1-10); test ~ (0-30) Large values of test and score indicates that ...
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1answer
93 views

Identification problems with a structural equation model of experimental data

I have performed an experiment in which I manipulated three factors and I would like to model latent variables that those factors affect and then estimate the effects of the latents on response ...
3
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1answer
323 views

How do I interpret Lavaan output?

I am attempting confirmatory factor analysis (CFA) using Lavaan. Being new to this analysis, I am having a hard time interpreting the output produced by Lavaan. I ...
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1answer
67 views

Standard Deviation vs. Standard Error of the mean [closed]

In a medical drug test, which one is reasonable to report along with mean to summarize the variance? SD or SEM?
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23 views

Why use asymptotic covariance matrix when doing a SEM model?

I am constructing a structural equation model in LISREL. First I export the asymptotic covariance matrix and then the correlation matrix. Then I construct the SEM with a syntax that uses these two ...
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2answers
173 views

Unable to estimate standard error after freeing first indicator in SEM model - Why is it so?

I'm new to SEM + posting on this forum; do let me know if I'm being unclear in any way, and I'll do my best to clarify. Background I'm working on a SEM assignment to estimate the fit of a model, ...
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1answer
75 views

PLS PM: Multiplying outer loadings with inner path coefficients?

I'm referring to a method called PLS PM: http://cran.r-project.org/web/packages/semPLS/vignettes/semPLS-intro.pdf http://gastonsanchez.com/PLS_Path_Modeling_with_R.pdf Not going into detail, I just ...
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116 views

Exploratory Structural Equation Model (ESEM) in R: Exploratory Specification Model

Thanks in advance for your help. I have been trying to developed ESEM in R, and am hoping to generate some fit statistics for a 3 factor model. My data include 12 items and 213 observations. I ...
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1answer
57 views

Comparing multiple groups in SEM R

I am to compare several groups (depressed, bipolar, and controls) on many variables and I was advised to use SEM in R. I am teaching myself R at the moment but I am a bit confused. I am not sure how ...
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0answers
124 views

Specifying a path model with a mediator in R (Lavaan package)

Beginner's question about specifying a path model in the SEM package lavaan. The model I would like to specify is for an experimental design. There is a factor for the experimental condition (Int), ...
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1answer
16 views

SEM and multiple item / dimension scale

I have a 120 item, 18 facet, five factor model I am attempting to validate. I have attacked this by attempting to develop single congeneric models for each of the 18 dimensions, but am at a loss as to ...
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1answer
34 views

Structural Equation Model - Construct Operationalization

I'm building a Structural Equation Model and I'm trying to operationalize my Dependent Variable, the construct of "Investor Behaviour" (= whether or not an investor is willing to invest in a startup). ...