Baselining as a Lie Detection Method

Summary For entirely valid reasons, practitioners urge researchers to develop within‐subjects lie detection methods. This article highlights some problems with the existing and popular nonverbal baseline lie detection method and with the use of the Validity Checklist in SVA. The article further suggests how verbal within‐subjects lie detection methods can be introduced in interview settings by implementing verbal lie detection interview protocols designed in recent years. The article concludes that these within‐subjects methods do not provide the ultimate solution as clear cut‐off scores cannot be established, but they are a step forward in verbal lie detection.