CPE Data Analysis 5

Question 1

What role does 'normalization' play in polygraph data analysis when comparing responses across different examinees?

Accepted Answer

It accounts for individual baseline differences so responses can be meaningfully compared within a subject

Answer

It converts all response amplitudes to a universal millimeter scale

Answer

It removes all artifacts from the tracing before scoring

Answer

It standardizes the number of questions across all test formats

Question 2

Which of the following artifacts would most likely cause an examiner to discard a chart run and request a re-administration?

Accepted Answer

Persistent gross body movement artifacts corrupting all channels throughout the chart

Answer

A single small movement artifact on one channel during one question

Answer

A deep breath taken during the inter-question interval

Answer

Mild baseline drift in the electrodermal channel only

Question 3

A polygraph examiner finds that only one of three chart runs shows a clear response pattern to relevant questions. The best analytical approach is to:

Accepted Answer

Collect additional charts and evaluate the overall pattern before rendering a determination

Answer

Score only the one chart and render a conclusion based on it

Answer

Automatically render an inconclusive determination

Answer

Discard all charts and retest on a different day

Question 4

In data analysis, what does a 'gradual recovery' in the electrodermal tracing following a question stimulus suggest compared to a 'rapid recovery'?

Accepted Answer

Gradual recovery generally indicates a more robust and prolonged autonomic response

Answer

Rapid recovery suggests stronger arousal than gradual recovery

Answer

Recovery speed has no diagnostic relevance in polygraph analysis

Answer

Gradual recovery always signals countermeasure use

Question 5

When computing a grand total score across multiple relevant questions in the ZCT format, what calculation method is used?

Accepted Answer

Sum the spot scores for each question across all channels and all charts

Answer

Average the scores of all relevant questions across all channels and all charts

Answer

Use only the highest-scoring chart and sum its spot scores

Answer

Multiply the number of charts by the number of relevant questions

Question 6

A sensitivity value of 0.88 in a polygraph validation study means:

Accepted Answer

88% of deceptive examinees were correctly identified as deceptive

Answer

88% of truthful examinees were correctly identified as non-deceptive

Answer

88% of all examinees received a conclusive result

Answer

88% inter-rater agreement was achieved across scorers

Question 7

Which of the following best describes the purpose of a 'known-lie' (KL) test question during data analysis validation?

Accepted Answer

To assess whether the examiner's scoring accurately identifies responses to questions answered with a known deception

Answer

To establish the examinee's maximum physiological response capacity for calibration

Answer

To replace the need for comparison questions in the ZCT format

Answer

To measure the examiner's bias toward deceptive determinations