| Sumario: | A study was conducted to determine the validity of the control question test (CQT) for detecting deception. Data from the files of 41 criminal cases were assessed for confirming information and were subsequently rated by two evaluators on the basis of the confirming information. Results revealed that these ratings were highly reliable and that 32 of these cases had independent confirmation. When numerical scores and decisions from the original examiners and an independent evaluation were analyzed, results indicated that the CQT was a highly valid discriminator. Apart from inconclusives, the decisions of the initial examiners were correct 96 percent of the time, and the independent evaluations were 93 percent correct. These findings support the validity of the CQT in real-world settings and suggest that criteria other than confession can be developed and employed reliably.
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