When I started to read about Machiavellianism, I found different ways to measure it - from using Mach-IV - Mach-VI and SD3 only to combined measures with NASA game and open-ended questions, presented after high-stake scenarios.

Now I'm searching for alternative methods to estimate Machiavellianism, probably with Murray's Thematic apperception test, Marlowe-Crowne Social Desirability Scale, Shmelev's Comic phrases test etc. The alternative' necessity is based on sample features that could lead to guessing the goal of diagnostics.

How would you measure Machiavellianism except questionnaires?