A list of synonyms for modelling

model_synonyms.md

Models

1. Structural Equation Model

• RAM or LISREL model where the entries of A and S are numeric

2. Extended SEM

• Model in which the RAM equivalent of A and S entries may be arbitrary algebras.

3. Definition variable

• Any value in an SEM that is replaced with a person-specific value such that it is different for every row or person.

4. Multilevel model

• Relational SEM (by analogy to the way in which a relational database links values in different tables. How OpenMx implements mulit-level

5. Item Response Theory

• Item factor analysis (IFA)

6. Independent variable

• regressor, the right-hand side of a formula, e.g. regressand ~ regressor
• The source side of a 1-headed path
• Nice list of synonyms on wikipedia

7. "Regressed on", as in "Y is regressed on predictors x and z"

• What ~ means in an lm(), e.g.
• in lavaan: "locus ~ read + write"
• in Mplus: "locus on read write"
• in sem "locus <- read write"
• in OpenMx mxPath(c("read", "write"), to = "locus")

8. Exogenous

• variable imposed on the model, and not influenced by variables inside the model.

Estimators

1. WLS = weighted least squares
2. Robust weighted least squares

• DWLS (Mplus)
• estimator = WLSMV or WLSM in Mplus and lavaan,