Understanding polygraphy

[nopolycop]

Is it my understanding that the polygraph examiner himself determines how much variance in the chart readings in order to determine deception or no deception?  I ask this based on the following lineini Mr. Hont's study regarding countermeasures:

"Followng the data collection, the examiner ran the CPS discriminant analysis classification software . . . . Participants who produced probabilities of trthfulness of .7 or greater were told they passed and were given the movie pass bonus."

So, what does this mean in layman's terms?

[raymond.nelson]

You cannot reasonably expect, in this forum, a primer on discriminate analysis, likelihood ratios or bayesian probabilities.

More succinct questions would be in order.

For basic information, of which there is sometimes a lot, you can refer to any advanced statistics texts or treatises. However, many find it easier to learn about statistics in a classroom with other students vs. self study.

r

[nopolycop]

You cannot reasonably expect, in this forum, a primer on discriminate analysis, likelihood ratios or bayesian probabilities.

More succinct questions would be in order.

For basic information, of which there is sometimes a lot, you can refer to any advanced statistics texts or treatises. However, many find it easier to learn about statistics in a classroom with other students vs. self study.

r

Thank-you Mr. Nelson for your comments.  Based on your response,  I guess there is no way to discuss this in laymans terms.

[raymond.nelson]

No.