A first example to illustrate

A dataset containing ... .

example01

Format

A data frame with 871 rows and 9 variables:

dv

Count of correctly-answered items (dependent variable)

treat

Treatment group variable, where 0 is control and 2 is treatment

z11

First indicator of internal LoC

z12

Second indicator of internal LoC

z21

First indicator of external LoC

z22

Second indicator of external LoC

z41

First indicator of depression

z42

Second indicator of depression

z43

Third indicator of depression