Psychologist Dr. Lisa Wong argues that lie detection through polygraphs is no better than chance despite continued use in law enforcement.
2
readingWhich research evaluation would best support Wong's accuracy critique?
A
Polygraphs measure physiological responses
B
Controlled studies show polygraphs correctly identify lies 54% of the time—barely above chance coin-flip accuracy—with up to 50% innocent people failing tests in some conditions
C
Police use many investigation techniques
D
Some people pass polygraphs
Correct Answer: B
Choice B is the best answer. 54% accuracy (near 50% chance) + high innocent failure rate proves unreliability.
💡 Strategy: "No better than chance" claims need accuracy data compared to base rate.