Kinesic Interviewing Techniques: Denver Criminal Law

What Colorado Law Provides

The laws below do not mention kinesic interviewing by name. They set the rules for police questioning whatever method the officer uses.

• The right not to incriminate yourself. The Fifth Amendment provides that no person “shall be compelled in any criminal case to be a witness against himself.” See the U.S. Constitution, Fifth Amendment.
• Recording of serious felony interrogations. Under C.R.S. 16-3-601, when a peace officer reasonably believes he or she is investigating a class 1 or class 2 felony, or certain felony sexual assault offenses, the officer must electronically record a custodial interrogation of the suspect that takes place in a permanent detention facility. That includes a jail or a building housing a law enforcement agency’s offices. It does not include a vehicle. The recording must be audio-visual.
• Exceptions to recording. The recording requirement does not apply if the person asks not to be recorded (and that request is itself recorded or put in writing), the equipment fails or is unavailable, public-safety emergencies prevent recording, or the interrogation happens outside Colorado. C.R.S. 16-3-601(2).
• What happens if police do not record. The statement can still be admitted. But if the prosecution cannot show by a preponderance of the evidence that an exception applies, the judge must tell the jury that the failure to record violated the agency’s policy and state law, and that the jury may consider that violation in deciding how much weight to give the statement. C.R.S. 16-3-601(4).
• Extra protections for juveniles. Under C.R.S. 19-2.5-203, a juvenile’s statement from a custodial interrogation about alleged delinquent acts generally cannot be used against the juvenile unless a parent, guardian, or legal or physical custodian was present and both were advised of the juvenile’s rights. There are exceptions, including when the juvenile’s lawyer is present or when the juvenile and parent sign a written waiver after being advised.
• Deception with juveniles. Since August 7, 2023, a juvenile’s statement is presumed inadmissible if the officer, or someone acting to help police get a confession, knowingly told the juvenile something untruthful to obtain it, such as false statements about the evidence or unauthorized statements about possible leniency. The prosecution can overcome that presumption only by proving at a pretrial hearing, by a preponderance of the evidence, that the statement was voluntary anyway or that the officer in good faith reasonably believed the information was true. C.R.S. 19-2.5-203(8)(a) and (8)(d).
• All juvenile interrogations recorded. Police must electronically record every custodial interrogation of a juvenile, whatever the offense. C.R.S. 19-2.5-203(8)(b).

Understanding Kinesic Interviewing

Kinesic interviewing is an approach to questioning that relies on nonverbal communication. The interviewer watches body language, facial expressions, and gestures alongside the spoken answers, and treats changes in them as clues about how the person is feeling.

In practice, the interviewer adjusts in real time. If a person shifts in the chair or looks away, the interviewer may slow down, change the subject, or come back to the question later. The method also stresses making the person feel understood and respected, on the theory that people who feel at ease say more.

These observations are interpretations, not facts. A glance away might mean evasion, but it can also mean the person is thinking, is tired, is uncomfortable around police, or has different habits about eye contact than the interviewer does.

Importance in Criminal Investigations

Investigators use kinesic techniques to build rapport with witnesses and suspects and to decide which answers deserve closer questioning. A person who feels comfortable with the interviewer may keep talking longer than he or she otherwise would.

For a suspect, that comfort cuts both ways. Rapport is a questioning technique, and the officer is gathering information for the investigation. Anything a suspect says can become evidence, which is why the right not to incriminate yourself matters no matter how friendly the conversation feels.

Nonverbal Cues Analysis

Kinesic training teaches investigators to interpret gestures and facial expressions as signs of a person’s emotional state. Common examples include crossed arms, which the method reads as defensiveness, and brief “fleeting” expressions that seem to clash with what the person is saying.

The same gesture can have many causes. Crossed arms may mean the room is cold. A tense face may reflect fear of being arrested rather than guilt. Treating these cues as proof of credibility risks mistaking an innocent person’s stress for deception.

This is one reason recording matters. In serious felony cases, C.R.S. 16-3-601 generally requires custodial interrogations in a jail or police building to be recorded on audio-visual equipment, so the person’s behavior is preserved and a judge or jury can watch it rather than rely only on the officer’s description.

Building Rapport Effectively

Investigators work to build rapport because they want accurate and complete information. The technique rests on the idea that people who feel safe and understood are more likely to share information.

Rapport building usually involves:

• Active listening: Showing interest in the interviewee’s words to increase their comfort level.
• Nonverbal communication: Positive body language, such as nodding and maintaining eye contact, to create a sense of connection.
• Empathetic responses: Acknowledging the interviewee’s feelings to encourage open conversation.
• Common ground: Identifying shared interests or experiences.

If you are a suspect, keep in mind that these are deliberate interviewing techniques. A friendly tone does not change what your statements can be used for.

Detecting Deception Indicators

Kinesic interviewing is often promoted as a way to spot deception through body language, vocal tone, and eye contact. Interviewers are taught to watch for changes such as a sudden shift in posture or longer pauses before answers, and some treat unusually detailed answers as a warning sign.

None of these signs is proof of lying. People react differently under stress, and an honest person questioned about a crime has many reasons to pause, fidget, or look away. These signs can prompt more questions. They are not evidence that a statement is false.

Colorado law is especially strict when police use deception on juveniles. Under C.R.S. 19-2.5-203(8), a juvenile’s statement obtained by knowingly giving the juvenile untruthful information is presumed inadmissible, as described above.

Key Techniques and Strategies

Kinesic interviewing combines three techniques: watching nonverbal cues, active listening, and behavioral analysis. The goal is an interview in which the person feels comfortable enough to keep talking.

Nonverbal Communication Cues

Interviewers using kinesic methods focus on the cues below. The descriptions are how the method interprets them, not established facts about any particular person:

• Eye Contact: The method treats steady eye contact as a sign of engagement and avoidance as a possible sign of discomfort or deception. Eye contact habits also vary from person to person.
• Facial Expressions: Shifts in facial expression are read as signs of feelings such as fear, anger, or sadness.
• Posture and Body Language: Open or closed body positions are read as comfort or defensiveness.
• Gestures: Hand movements are read as emphasis or anxiety.

Active Listening Practices

Active listening is a central part of kinesic interviewing. The interviewer not only hears the words being spoken but also pays attention to the emotions behind them. Creating a sense of trust is meant to encourage the person to keep talking.

Common techniques include maintaining appropriate eye contact and using open body language to show interest. Reflective responses are another: the interviewer paraphrases or summarizes what the person said to show understanding. Acknowledging emotions such as fear or frustration is used to build rapport.

Asking open-ended questions keeps the conversation going and draws out more information.

Behavioral Analysis Techniques

Behavioral analysis means watching a person’s behavior for signs of emotion or stress during the interview. The method focuses on:

• Facial Expressions: Brief “micro-expressions” are read as signs of emotions such as fear, guilt, or excitement.
• Posture Analysis: Openness or defensiveness is read as a sign of the person’s comfort level and willingness to talk.
• Gestures: Hand movements that match or clash with what the person is saying are considered in the overall assessment.
• Eye Contact: Eye movements are read as confidence or evasion, and the interviewer adjusts the approach.

These are judgment calls made in the moment, and they can be wrong.

Applications in Denver Law Enforcement

Police officers in Denver, like officers elsewhere, may use body-language observation and rapport building during interviews and street encounters. Cultural differences matter here, because a gesture or level of eye contact that seems evasive to one person may be ordinary to another.

Whatever technique an officer uses, the legal limits are the same. In Colorado, a custodial interrogation of a suspect in a class 1 or class 2 felony or certain felony sexual assault case, conducted in a jail or police building, must generally be recorded on video under C.R.S. 16-3-601. For juveniles, every custodial interrogation must be recorded, whatever the offense, under C.R.S. 19-2.5-203(8)(b).

Assessing Credibility Through Body Language

Kinesic training presents body language as a way to judge credibility. Officers are taught to look at several indicators:

• Facial Expressions: A relaxed, consistent expression is read as sincerity, while brief flashes of fear or anger are read as possible concealment.
• Posture Shifts: Rigid or closed-off posture is read as defensiveness, and relaxed posture as confidence.
• Eye Contact: Steady eye contact is read as honesty, and avoidance as discomfort or dishonesty.
• Gesture Clusters: Several cues together, such as crossed arms plus an averted gaze, are treated as a stronger signal than one cue alone.

Each of these readings can be wrong. Fear, anxiety, a disability, a language barrier, or simple discomfort around police can produce every one of them in a truthful person.

If an officer testifies about how you behaved during an interview, the Sixth Amendment gives you the right “to be confronted with the witnesses against him.” Your lawyer can question the officer about what was actually observed and what else could explain it. See the U.S. Constitution, Sixth Amendment. When the interview was recorded, the video itself can be compared with the officer’s description.

Future of Kinesic Techniques in Law

Some agencies may combine traditional kinesic methods with software that analyzes faces or body language. Any claim that such tools can reliably separate truth from deception should be tested before it is trusted in a criminal case.

The use of technology in kinesic interviewing also raises ethical concerns. Tools that analyze body language and facial expressions must be balanced against the protection of individual rights. Misinterpretation or misuse of the data could lead to unfair bias, which is why training and clear guidelines matter.

Colorado has already addressed training for one group. C.R.S. 24-31-303(1)(u) directed the state P.O.S.T. board, which certifies peace officers, to develop a live virtual training program for officers on the juvenile deception rule in C.R.S. 19-2.5-203(8). The training must cover, among other things, interpreting juvenile behavior during an interview, building rapport with juveniles, and how to reduce the likelihood of false or coerced confessions.

Frequently Asked Questions

What Qualifications Are Required to Learn Kinesic Interviewing Techniques?

In a criminal case, what matters is not the interviewer’s qualifications but whether the questioning followed the law. An officer’s training in body language does not change the rules described above: the right not to incriminate yourself, the recording requirement in C.R.S. 16-3-601, and the added protections for juveniles in C.R.S. 19-2.5-203.

Are There Any Certifications Specifically for Kinesic Interviewing Professionals?

Colorado law addresses training on one related subject. C.R.S. 24-31-303(1)(u) required the P.O.S.T. board to develop training for peace officers on juvenile interrogations, including interpreting juvenile behavior during interviews. Whatever training or certificate an officer has, it does not make the officer’s reading of a person’s demeanor proof of anything, and it is something your lawyer can ask about.

How Long Does It Take to Master Kinesic Interviewing Skills?

Training time varies. For anyone facing charges, the length of an officer’s training matters less than whether the interview was recorded and whether the officer’s account of your behavior matches the recording.

Can Kinesic Interviewing Techniques Be Used in Civil Cases as Well?

Anyone who conducts interviews can use the same observation methods, including in civil cases. The legal protections on this page are criminal-case rules, though. C.R.S. 16-3-601 applies to custodial interrogations by peace officers, and C.R.S. 19-2.5-203 applies to statements of juveniles obtained through custodial interrogation by law enforcement.

What Resources Are Available for Further Learning About Kinesic Interviewing?

Books and courses on nonverbal communication and interviewing are available for general learning. If you have been questioned by police, the most useful resource is a criminal defense lawyer who can review the recording of your interview and the circumstances in which it took place.