Does anyone know questionnaires for measuring positive and negative trait affect?

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Ilija Milovanović

You can also use PANAS or SPANE for measuring trait affect. Difference between state and trait measuring is defined in the instruction. For trait measuring you can ask HOW OFTEN IN GENERAL YOU FEEL... (without any specified time in the instruction).

Qian Yang

Ilija Milovanović thanks Llija, I got your point.

David Thomson

I could show you how to easily survey for yourself with LIWC 2007 or newer. If you're interested in natural language usage and can capture those texts.