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SEM

Member Training: Model Fit Statistics in Structural Equation Modeling

by Karen Grace-Martin Leave a Comment

Structural Equation Modelling (SEM) increasingly is a ‘must’ for researchers in the social sciences and business analytics. However, the issue of how consistent the theoretical model is with the data, known as model fit, is by no means agreed upon: There is an abundance of fit indices available – and wide disparity in agreement on which indices to report and what the cut-offs for various indices actually are. [Read more…] about Member Training: Model Fit Statistics in Structural Equation Modeling

Tagged With: indices, Model Fit, SEM, Structural Equation Modeling, theoretical model

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Five things you need to know before learning Structural Equation Modeling

by guest contributer 1 Comment

By Manolo Romero Escobar

If you already know the principles of general linear modeling (GLM) you are on the right path to understand Structural Equation Modeling (SEM).

As you could see from my previous post, SEM offers the flexibility of adding paths between predictors in a way that would take you several GLM models and still leave you with unanswered questions.

It also helps you use latent variables (as you will see in future posts).

GLM is just one of the pieces of the puzzle to fit SEM to your data. You also need to have an understanding of:
[Read more…] about Five things you need to know before learning Structural Equation Modeling

Tagged With: Missing Values, normality assumption, outliers, sample size, SEM, Structural Equation Modeling

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  • Structural Equation Modeling: What is a Latent Variable?

Structural Equation Modeling: What is a Latent Variable?

by guest contributer 6 Comments

By Manolo Romero Escobar

What is a latent variable?

“The many, as we say, are seen but not known, and the ideas are known but not seen” (Plato, The Republic)

My favourite image to explain the relationship between latent and observed variables comes from the “Myth of the Cave” from Plato’s The Republic.  In this myth a group of people are constrained to face a wall.  The only things they see are shadows of objects that pass in front of a fire [Read more…] about Structural Equation Modeling: What is a Latent Variable?

Tagged With: Factor Analysis, latent variable, SEM, Structural Equation Modeling

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Why do I need to have knowledge of multiple regression to understand SEM?

by guest contributer 2 Comments

by Manolo Romero Escobar

General Linear Model (GLM) is a tool used to understand and analyse linear relationships among variables. It is an umbrella term for many techniques that are taught in most statistics courses: ANOVA, multiple regression, etc.

In its simplest form it describes the relationship between two variables, “y” (dependent variable, outcome, and so on) and “x” (independent variable, predictor, etc). These variables could be both categorical (how many?), both continuous (how much?) or one of each.

Moreover, there can be more than one variable on each side of the relationship. One convention is to use capital letters to refer to multiple variables. Thus Y would mean multiple dependent variables and X would mean multiple independent variables. The most known equation that represents a GLM is: [Read more…] about Why do I need to have knowledge of multiple regression to understand SEM?

Tagged With: GLM, Multiple Regression, SEM, Structural Equation Modeling

Related Posts

  • Five things you need to know before learning Structural Equation Modeling
  • The Four Models You Meet in Structural Equation Modeling
  • One of the Many Advantages to Running Confirmatory Factor Analysis with a Structural Equation Model
  • First Steps in Structural Equation Modeling: Confirmatory Factor Analysis

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