Exercise

# Three-Factor Model with Zero Correlation

In this exercise, you will use the Eysenck Personality Inventory dataset from the `psychTools`

library to create a three-factor model of personality. This inventory includes 57 questions that measure extraversion, neuroticism, and lying.

Let's create a three factor model using the latent variables: `extraversion`

, `neuroticism`

, and `lying`

with four manifest variables on each item. Remember when you create multiple latent variables, these endogenous variables are automatically correlated. Set the correlation between the `extraversion`

latent variable and `neuroticism`

latent variable to zero, by using the `~~`

in model specification code.

Instructions 1/3

**undefined XP**

- Create a lying factor including items
`V6`

,`V12`

,`V18`

, and`V24`

. - Set the correlation between
`extraversion`

and`neuroticism`

to zero (in that order).