Statistical Analysis Stack Exchange
Statistical Analysis Stack Exchange

Questions tagged [path-model]

101 questions
21
votes
6 answers

R package for multilevel structural equation modeling?

I want to test a multi-stage path model (e.g., A predicts B, B predicts C, C predicts D) where all of my variables are individual observations nested within groups. So far I've been doing this through multiple unique multilevel analysis in R. I…
Steven L. Johnson
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What if path c isn't significant, but paths a and b are? Indirect effect in mediation

In a classic mediation model, we have paths shown in the diagram below , in which the first step of testing the mediating effect of M between X and Y is that X is significantly correlated with Y (as shown in panel A in the figure). However, I…
fishbean
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1 answer

Difference between PLS regression and PLS path modeling. Criticism of PLS

This question was asked here but no one gave a good answer. So I think it's a good idea to bring it up again and also I would like to add some more comments/questions. The first question is what is the difference between "PLS path modeling" and…
Ress
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1 answer

How to interpret coefficients produced by the sem function in R?

I have performed the path analysis using the sem function in R. The model which I fitted consists of both direct and indirect paths. I have some trouble in interpreting the estimates of the SEM coefficients. Does R gives the value of total effect…
Amol Pande
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7
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3 answers

Testing whether two regression coefficients are significantly different

I'm hoping somebody can help me out with this question. For a study I did a path analysis, which looks like this: IV --> Mediatior --> DV IV --> So I have two IV's leading to my mediator. With SPSS I did two regression analysisses from…
user12208
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1 answer

Why are over identified models preferred over just identified models in Structural Equation Modeling?

It's often stated that for analysis using an SEM technique, it is preferred to use an overidentified model compared to a just identified model. Why is that so ? My intuition says that for an over identified model will have more than one solution and…
Sahil Talwar
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6
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1 answer

How to interpret the model fit indices generated by lavaan (in R)? Something wrong with the model specifications?

I am trying to replicate a path analysis SEM model using Lavaan in R, and was very confused about the results that it gave regarding the model fit statistics. The code is as follows: #Import Package library(lavaan) #Input Correlation Matrix sigma…
Xander
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5
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Path analysis, sample sizes, and alternative analysis

I am examining how English ivy affects the occurrence of a salamander species under cover objects (e.g., logs). Soil moisture is assumed to be the major factor that affect their occurrence. My hypothesized pathway: The presence/absence of…
kiyoshi sasaki
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5
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1 answer

Simulate data for path model

How does one simulate data for a path model? Below is an example path model with parameters b1, b2, b3, b4, b5, e1, e2 and e3. I would like to investigate how sample size affects my estimates and what happens to the estimates if a path is added…
Glen
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Can SEM distinguish between the following models?

Suppose I have 3 manifest variables, x, y and z. I would like to use path analysis to determine the direction of influence. Is there a test that lets me distinguish between the following models? and In the first, z is caused directly by x, and…
Placidia
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Reference on Path Analysis

This is not basically a research question rather an ask for help to provide me with some useful references on Path Analysis. This seems to be a trendy technique, but looks a little bit complicated. Is there any downloadable complete free book or PDF…
Blain Waan
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Path Analysis in the Presence of a Conditioned-Upon Collider

In path analysis (i.e., DAGS as linear structural equation models), where all relationships between variables are assumed to be linear, you can compute the association between two variables by multiplying the path coefficients corresponding to each…
Noah
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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 20 parameters. My analysis is performed using SPSS…
fishbean
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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 regressions. The results came out like this: The…
user1205901 - Reinstate Monica
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Delaunay triangulation, with connected coloring

Let suppose I have a Delaunay triangulation with $n$ triangles, and K distinct colours. I want to color each triangle such that if I start from one triangle with color k, i can reach all triangles with the same color, without passing on triangles…
niandra82
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