latent variable

  1. K

    Probit model - threshold

    Hi, I am working with a binary outcome model so yi takes the value 1 or 0. Xi is a vector of 8 explanatory variables and Beta (B) is a vector of 9 parameters (8 variables +intercept). I am working with the probit model so F(X'B)=standard normal c.d.f. Next; Let y(hat)i be equal to...
  2. S

    AMOS: 0 variance above latent variable

    Hi all, I just ran my model, and it fits really well and all the parameter coefficients are strong and at least moderately high. I was confused though because the Variance reported above the latent variable is zero. The model's structure is four measured variables loading into a single latent...
  3. H

    questions about manifest and latent variables

    hi i have 2 main questions Latent variables are unobserved variables that are measured by multiple observed items(called manifest variables). now my questions: 1- each latent variable is an unobserved variable are all unobserved variable called "latent"? 2- each manifest...
  4. J

    use of linear predictions from ordered probit as right-hand side variables

    Hi all, Does anyone know if it is OK to use an ordered probit model to predict a latent variable, e.g. self-perceived health; and then use the linear predictions as a right-hand side variable in another ordered probit to predict a different latent variable, e.g. life satisfaction. The...
  5. J

    Problem fitting an SEM with latent variable

    Hello, I am having trouble with a Structural Equation Model. As you can see in the attached picture, my main outcome variable (F4) is a latent variable. When I run the model, all of the paths are significant in the hypothesized direction, but the Chi-square is very high (almost 10,000) and...
  6. @

    multivariate ordered probit regression---use standard bivariate normal distribution?

    Hello. My two previous posts (1 & 2) have about 100 views each, but no replies, so I must have done a poor job asking the question. So, here is the general question: how can I run a run a multivariate (more than one non-independent, response variables) ordered probit regression model? I've...
  7. S

    "Error in paste" when fitting a latent curve model using OpenMx

    Hi all, I am relatively new to R. I have been using it to estimate structural equation models using OpenMx. Now I am trying to fit a latent curve model using a script that I have used many times, but now I get an error which I cannot find a solution to! I don't know whether I should...
  8. jpkelley

    GLLAMM in R

    Hi all, I seem to recall that some of you (spunky, Dason, and other) might be doing research using latent variable models and their variants. As I start to ask more questions about the temporal sequences of signaling, aggression, and courtship in my experiments on birds (and now spiders)...
  9. R

    PCA latent variables

    For exploratory purposes, should PCA (Principal Component Analysis) be done for one latent variable at a time or should it done for all the latent variables at once? I seem to get better results with each of my latent construct's item loadings if I do PCA one latent construct at a time. Is this...
  10. S

    Regression with latent variable

    Hi, I'm doing some research for my dissertation and need to construct a latent variable that includes observations of various economic determinants (IVs). I'm using SPSS, but I don't have access to AMOS, and a additive composite index lacks reliability (Cronbach's Alpha is too small)...