Improve an agency’s capacity for detecting lies other than using a polygraph?

/in /by

 

What policy or procedural changes could be considered and things that could be started or things that should be stop doing to improve an agency’s capacity for detecting lies other than using a polygraph?

What is the most important thing to consider in a polygraph result?
Calculation of the index for diagnostic tests at various levels of accuracy, using various thresholds, and with a variety of base rates shows clearly that base rate is by far the most important of these factors.

Or would it be delay in taking action until more data were available on this topic? What sorts of data would be needed?