7.2 Investigative Interviewing, Interrogation & Eyewitness Identification

Key Takeaways

  • Investigative interviewing targets non-accusatory factual retrieval from cooperative witnesses and victims, whereas custodial interrogation involves accusatory questioning of suspects requiring Miranda warnings.
  • Cognitive interviewing maximizes accurate memory recall through context reinstatement, detailed reporting, varied recall order, and changing perspectives while avoiding leading questions.
  • Interrogation voluntariness under the 14th Amendment Due Process Clause prohibits physical coercion, psychological duress, false promises of leniency, and fabricated statutory rights.
  • Connecticut Eyewitness Identification Protocol (CGS § 54-1p) mandates double-blind sequential photo/live lineups and specific standardized instructions to prevent witness misidentification.
  • Electronic Recording of Custodial Interrogations (CGS § 54-1o) requires audiovisual recording of capital felony and severe felony suspect interrogations to maintain admissibility.
Last updated: July 2026

7.2 Investigative Interviewing, Interrogation & Eyewitness Identification

Gathering testimonial evidence through witness interviews, suspect interrogations, and eyewitness identification procedures constitutes one of the most critical operational aspects of criminal investigations in Connecticut. While physical evidence provides scientific proof, testimonial evidence supplies narrative context, intent (mens rea), and identity. However, testimonial evidence is uniquely vulnerable to memory distortion, psychological coercion, and investigative bias. To ensure that statements and identifications withstand constitutional scrutiny in Connecticut courts, law enforcement officers must strictly adhere to cognitive interviewing techniques, constitutional voluntariness standards, statutory eyewitness identification protocols under C.G.S. § 54-1p, and mandatory interrogation recording rules under C.G.S. § 54-1o.


Distinguishing Interviewing vs. Interrogation

Although the terms are often used interchangeably in popular media, police science and constitutional law draw a sharp distinction between an interview and an interrogation:

Investigative Interviewing

  • Purpose: Non-accusatory gathering of facts, background information, and observations from victims, witnesses, or complainants.
  • Tone & Atmosphere: Professional, cooperative, empathetic, and open-ended. The interviewer aims to facilitate maximum voluntary memory retrieval.
  • Legal Status: Non-custodial. The interviewee is free to leave at any time, and Miranda warnings are not required.

Suspect Interrogation

  • Purpose: Accusatory questioning of a specific suspect designed to elicit admission of involvement, clarify discrepancies, or obtain a full confession.
  • Tone & Atmosphere: Persuasive, structured, and active. The interrogator controls the environment and confronts the suspect with facts or logical inconsistencies.
  • Legal Status: Frequently custodial. When a suspect is in custody (deprived of freedom of movement in a significant way) and subjected to interrogation, Fifth Amendment Miranda rights must be advised and validly waived prior to questioning.

Cognitive Interviewing Techniques for Victims & Witnesses

Traditional police interviewing often relied on rapid-fire closed questions that unintentionally distorted witness memory or introduced interviewer bias. In Connecticut, officers are trained in the Cognitive Interview model—an evidence-based interviewing technique designed to maximize accurate information retrieval from victims and witnesses without contaminating memory.

Core Cognitive Strategies

  1. Mental Context Reinstatement: The officer guides the witness to mentally recreate the physical and emotional environment of the incident. The officer asks the witness to remember the surroundings, weather, lighting, sounds, feelings, and thoughts they experienced right before the event.
  2. Encourage Exhaustive Detail ("Report Everything"): Witnesses are instructed to report every detail, no matter how trivial, incomplete, or seemingly irrelevant. Minor details often trigger recall of critical facts or corroborate physical evidence.
  3. Varied Temporal Recall Order: The officer asks the witness to narrate the event in non-chronological sequences (e.g., starting from the central event and working backward, or starting from the middle). Reversing recall order breaks mental scripts and reveals previously omitted details.
  4. Change Perspective: The officer asks the witness to imagine the event from a different spatial location or viewpoint (e.g., "Imagine you were standing across the street by the bank teller window—what would have been visible?").

Active Listening & Open-Ended Questioning

Officers must utilize open-ended prompts ("Tell me everything that happened from the moment you stepped into the store") and avoid leading questions ("Was the robber wearing a red jacket?"), which plant false information into witness memory.


Legal Standards & Constitutional Voluntariness in Interrogations

To be admissible in a Connecticut criminal prosecution, any confession or incriminating statement obtained during an interrogation must satisfy two independent constitutional tests:

  1. Fifth Amendment / Miranda Compliance: If the suspect was in custody and subject to interrogation, the state must prove the suspect was advised of Miranda rights and executed a voluntary, knowing, and intelligent waiver.
  2. Fourteenth Amendment Due Process Voluntariness: Independent of Miranda, the confession must be voluntary under the totality of the circumstances. A confession is involuntary if police conduct overbore the suspect's will.

Prohibited Coercive Tactics (Involuntary Confessions)

Statements obtained through the following tactics are strictly inadmissible under federal and Connecticut constitutional jurisprudence:

  • Physical Force or Threats: Any physical abuse, deprivation of food, water, or sleep, or threats of physical violence.
  • Promises of Judicial Leniency: Promising specific court outcomes, such as "If you confess, the judge will drop all charges," or "We promise you won't serve jail time."
  • Fabricating Statutory Penalties: Threatening illegal consequences, such as threatening to arrest innocent family members unless the suspect confesses.

Permissible vs. Impermissible Deception

While courts permit limited trickery or bluffing regarding the strength of evidence (e.g., falsely telling a suspect that their accomplice is talking in the next room), officers may never fabricate physical evidence or lab reports (such as producing a fake DNA laboratory report) to induce a confession.


Connecticut Eyewitness Identification Protocol (C.G.S. § 54-1p)

Eyewitness misidentification is historically the leading cause of wrongful convictions in the United States. To eliminate suggestiveness and guarantee reliability, Connecticut enacted Connecticut General Statutes § 54-1p, establishing mandatory statutory procedures for all photo arrays and live lineups conducted by Connecticut law enforcement agencies.

Key Statutory Mandates Under C.G.S. § 54-1p

                      CT CGS § 54-1p LINEUP PROTOCOL
  ┌──────────────────────────────────────────────────────────────────┐
  │               DOUBLE-BLIND OR BLINDED ADMINISTRATION             │
  │ Administrator does NOT know which photo is the suspect          │
  └────────────────────────────────┬─────────────────────────────────┘
                                   │
                                   ▼
  ┌──────────────────────────────────────────────────────────────────┐
  │                 SEQUENTIAL PHOTO PRESENTATION                    │
  │ Photos shown ONE AT A TIME (minimum 5 fillers + 1 suspect)       │
  └────────────────────────────────┬─────────────────────────────────┘
                                   │
                                   ▼
  ┌──────────────────────────────────────────────────────────────────┐
  │                 MANDATORY WITNESS INSTRUCTIONS                   │
  │ • Perpetrator may or may not be in the photo array               │
  │ • Witness is not obligated to make an identification             │
  │ • The investigation will continue regardless of identification    │
  └────────────────────────────────┬─────────────────────────────────┘
                                   │
                                   ▼
  ┌──────────────────────────────────────────────────────────────────┐
  │              VERBATIM CONFIDENCE STATEMENT RECORDING             │
  │ Document witness's EXACT words regarding confidence immediately  │
  └──────────────────────────────────────────────────────────────────┘
  1. Double-Blind Administration: The individual administering the photo array or live lineup must not know which photograph or person represents the suspect. This prevents the administrator from making unintentional verbal or non-verbal cues (such as leaning forward or smiling when the witness looks at the suspect).
    • Folder Method Exception: If a double-blind administrator is unavailable, officers must use the "blinded folder method," placing photos in individual folders so the administrator cannot see which folder the witness is viewing.
  2. Sequential Presentation: Photographs must be presented to the witness one at a time (sequentially) rather than all at once (simultaneous array). Sequential viewing prevents "relative judgment," where witnesses pick the photo that looks most like the perpetrator relative to the other photos.
  3. Filler Requirements: Photo arrays must contain a minimum of five fillers (non-suspect photos) along with the one suspect photo. Fillers must match the general physical description of the perpetrator provided by the witness.
  4. Mandatory Standardized Instructions: Prior to viewing the array, the officer must read standardized written instructions to the witness, emphasizing:
    • The perpetrator may or may not be present in the photo array;
    • The witness is under no obligation to make an identification;
    • The investigation will continue regardless of whether an identification is made.
  5. Verbatim Confidence Statement: If the witness makes an identification, the administrator must immediately capture a verbatim statement in the witness's own words stating their level of confidence, before any feedback is provided.

Show-Up Identifications

A show-up is a one-on-one presentation of a single suspect to an eyewitness shortly after a crime. Because show-ups are inherently suggestive, Connecticut law limits show-ups strictly to exigent field circumstances where a suspect is detained near the crime scene within a short temporal window (typically within 1–2 hours) of the incident.


Mandatory Electronic Recording of Interrogations (C.G.S. § 54-1o)

Under Connecticut General Statutes § 54-1o, Connecticut law mandates that custodial interrogations of suspects conducted at a police station or place of detention for serious felony offenses must be electronically recorded in their entirety.

Scope & Requirements

  • Covered Offenses: Mandatory audiovisual recording applies to custodial interrogations involving capital felonies, Class A felonies, Class B felonies, and specified Class C felonies (such as sexual assault, robbery, and murder investigations).
  • Audiovisual Standard: Interrogations must be recorded using continuous audiovisual equipment recording both the suspect and the interrogating officers.
  • Statutory Exceptions: Recording is excused only under narrow statutory exceptions documented in writing: unexpected equipment failure, uncooperative suspects who refuse to speak if recorded, or interrogations conducted out-of-state.
  • Legal Remedy: Failure to record a covered interrogation without a valid statutory exception permits the trial court to suppress the confession or issue a cautionary jury instruction regarding the unrecorded statements.

Eyewitness & Interrogation Compliance Matrix

ProcedurePrimary Legal StandardCore Statutory RequirementConsequences of Non-Compliance
Photo LineupCGS § 54-1pDouble-blind sequential presentation; mandatory instructionsEvidence suppression; jury cautionary instruction
Suspect InterrogationCGS § 54-1oMandatory continuous audiovisual recording for serious feloniesConfession suppressed under CGS § 54-1o
Show-Up ArrayConstitutional Due ProcessRestricted to prompt field detentions (within 1-2 hours)High risk of suppression for undue suggestiveness
Confession Voluntariness14th Amendment Due ProcessTotality of circumstances; absolute ban on coercion/promisesReversible constitutional error; complete exclusion
Test Your Knowledge

Under the Connecticut Eyewitness Identification Protocol (C.G.S. § 54-1p), which of the following practices is STATUTORILY MANDATED when presenting a photo array to an eyewitness?

A
B
C
D
Test Your Knowledge

Pursuant to Connecticut General Statutes § 54-1o, which statement accurately describes law enforcement duties regarding custodial interrogations of serious felony suspects?

A
B
C
D
Test Your Knowledge

Which of the following interviewing techniques is a core component of the Cognitive Interview model utilized with crime victims and witnesses to enhance memory recall?

A
B
C
D