For general characterization of Big Six dimensions, see this table.

Four related Big Six inventories, of varying length, with all of them but 30QB6 referenced in Thalmayer, Saucier, and Eigenhuis (2011; Psychological Assessment).


48QB6:

Items in a recommended format for administration as a pdf  or here

Scoring instructions and psychometric information (suitable for hand-scoring; pdf)



36QB6 (one subset of 48QB6):

Items in a recommended format for administration (word file)... or here as a pdf

Scoring instructions and psychometric information (suitable for hand-scoring; pdf)



30QB6 (a variant of the 36QB6 consisting of best-performing items in cross-national measurement invariance analyses)

Scoring key from 2014 article



24QB6 (the briefest subset of the 48QB6):

Items in a recommended format for administration as a pdf

Scoring instructions and psychometric information (suitable for hand-scoring; pdf)   



Which of the four is the best? It is a researchable question: How much extra predictive validity (or other utility) is gained by increasing a brief inventory from 24 up to 36 or 48 items?  Also a matter of context: To what degree is generalizability between western and non-western populations (which might favor the 30QB6) desired? To generate data that can address this questions, it seems advisable to administer the 48QB6, which has the items in both the shorter versions...if the assessment situation permits.