2017/08/20

reflective vs. formative models



Reflective Model 

Items <-- Construct 

e.g.
Construct: Drunkeness 

- uncoordinated walking 
- glossy eyes 
- vomiting 
(items are related) 


Formative  Model 

Items --> Construct 

- Beer 10 liter 
- Vodka 1 liter
- Wine 1 liter 
(unrelated )

Therefore, formative measures define, produce, or cause the construct rather than vice versa !

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