As we saw last time, interviews — non-accusatory question-and-answer sessions — provide a means for investigators to uncover truth even when the person being interviewed is intent on deception. Here are four more techniques for detecting lies.
- Excessive certainty
- To compensate for a feeling that the interviewer might be closing in on Truth, or to hide the deceiver's uncertainty from the interviewer, the deceiver can project an air of certainty. But presenting just the right degree of certainty can be tricky for someone who's spinning a yarn. Sometimes deceivers overshoot.
- Most of us can't be really certain about very much. Some deceivers stand out because they deliver material with conviction beyond what might be considered typical of a truth teller, or typical for that particular deceiver.
- Red herring
- The red herring is a diversion technique intended to turn the interviewer in a direction the deceiver considers safe. For instance, in response to "Just how much over budget do you think you'll be?", a deceiver using a red-herring response might discuss the budget performance of other projects.
- Some red herrings are combined with attacks on rivals or already-established scapegoats. For example, the deceiver can use a red herring to lead the audience to conclusions that harm the audience's rivals. Since most audiences would find such material enticing, this form of red herring can be very effective. A first use of the red herring response is a warning sign; a second use must be dealt with directly.
- Consistency becomes increasingly difficult to achieve for deceivers interviewed multiple times, facing multiple interviewers, over a number of sessions, spread over time.
- One escape remains for deceivers who exhibit inconsistencies. They can claim that inconsistencies are due to "rapid evolution of the situation." That is, they might say that new information has come to light, creating the inconsistency. To defend against this, compress the interview's time scale until it's much shorter than the time scale of changes in the situation. Even better, freeze all activity in the environment under review.
- Halting presentation
- As the interview proceeds, possibly across multiple Consistency becomes increasingly difficult
to achieve for deceivers interviewed
multiple times, facing multiple
interviewers, over a number of
sessions, spread over timesessions and multiple interviewers, lie piles on lie. Some deceivers then begin having difficulty keeping straight in their minds what they told to whom and when. Spinning new lies then becomes more challenging than merely creatively constructing simple tales. It's now necessary to construct tales that are at least somewhat consistent with previous tales.
- When this happens, mental resources are required for both consistent tale construction and fluent speech. Only the most facile liars can marshal these resources. And even for them, extending the interview, swapping out one interviewer for another, and stretching the interview over longer periods, can saturate the deceiver's ability to creatively match new lies with old. The result is an increasingly halting presentation.
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More articles on Ethics at Work:
- When You're Scared to Tell the Truth
- In the project context, we need to know that whatever we're hearing from colleagues is the truth as
they see it. Yet, sometimes we shade the truth, or omit important details. Here's a list of some of
the advantages of telling the truth.
- Email Ethics
- Ethics is the system of right and wrong that forms the foundation of civil society. Yet, when a new
technology arrives, explicitly extending the ethical code seems necessary — no matter how civil
the society. And so it is with email.
- When Others Curry Favor
- When peers curry favor with the boss, many of us feel contempt, an urge for revenge, anger, or worse.
Trying to stop those who curry favor probably isn't an effective strategy. What is?
- When You Aren't Supposed to Say: III
- Most of us have information that's "company confidential," or even more sensitive than that.
Sometimes people who want to know what we know try to suspend our ability to think critically. Here
are some of their techniques.
- Telephonic Deceptions: II
- Deception at work probably wasn't invented at work. Most likely it is a continuation of deception in
the rest of life. But the technologies of the modern workplace offer new opportunities to practice the
art. Here's Part II of a handy guide for telephonic self-defense.
Forthcoming issues of Point Lookout
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- Some working groups consist of experts from many fields. When they must reach a decision by consensus, members have several options. Defining those options in advance can help the group reach a decision with all its relationships intact. Available here and by RSS on July 8.
- And on July 15: Disjoint Concept Vocabularies
- In disputes or in problem solving sessions, when we can't seem to come to agreement, we often attribute the difficulty to miscommunication, histories of disagreements, hidden agendas, or "personality clashes." Sometimes the cause is much simpler. Sometimes the concept vocabularies of the parties don't overlap. Available here and by RSS on July 15.
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