CJBAT Observation and Perception Questions and Answers 4 — Questions and Answers
Question 1: A victim states an attacker had a tattoo 'on the left arm,' but when you re-interview her facing the victim, the tattoo would actually appear on the observer's right. This is an example of:
- A fabricated account
- A perspective or orientation error by the witness (Correct answer)
- A memory suppression event
- Deliberate misdirection
Correct answer: A perspective or orientation error by the witness
Witnesses often confuse their left/right with the subject's left/right when facing them, a common orientation error that does not indicate dishonesty.
Question 2: Which environmental condition is MOST likely to impair a witness's ability to accurately recall facial features?
- Moderate daylight at noon
- High-stress lighting such as strobing club lights or rapid flashing (Correct answer)
- Standard indoor fluorescent lighting
- Overcast outdoor conditions
Correct answer: High-stress lighting such as strobing club lights or rapid flashing
Rapidly changing or strobing light disrupts the brain's ability to form stable facial memories, reducing detail accuracy.
Question 3: During a traffic stop, you observe the driver's hands are shaking and there is a strong odor of alcohol. Under the CJBAT observation framework, these are best classified as:
- Circumstantial assumptions
- Direct sensory observations that support probable cause (Correct answer)
- Hearsay evidence
- Presumptive inferences only
Correct answer: Direct sensory observations that support probable cause
Observable physical signs—trembling hands and odor of alcohol—are direct sensory observations that contribute to probable cause for DUI investigation.
Question 4: An officer photographs a crime scene and later notices a watch visible on the floor in the photo that was not collected as evidence. This oversight best illustrates:
- Confirmation bias during the scene search
- Tunnel vision causing selective attention (Correct answer)
- Proper evidence prioritization
- Adequate scene documentation
Correct answer: Tunnel vision causing selective attention
Tunnel vision occurs when officers focus narrowly on expected evidence and miss items outside that focus, a critical observation failure.
Question 5: You are shown a line of five individuals in a lineup. You recall the suspect had a distinctive scar above the left eyebrow. Which lineup member should you examine FIRST based on that observation?
- The tallest individual
- Each person sequentially looking for the specific scar detail first (Correct answer)
- The individual with the most similar height and build
- Whichever individual the officer suggests
Correct answer: Each person sequentially looking for the specific scar detail first
A specific, distinctive physical detail like a scar should be your primary filter; examining each person sequentially for that detail reduces suggestibility.
Question 6: A store clerk says the robber 'seemed about 6 feet tall.' The clerk is 5'4". Without additional context, this estimation is:
- Highly reliable since clerks interact with many people
- Potentially inaccurate because height estimation from a much shorter observer is unreliable (Correct answer)
- Precise enough for a positive ID
- Irrelevant since height changes with footwear
Correct answer: Potentially inaccurate because height estimation from a much shorter observer is unreliable
Height estimates made by observers significantly shorter than the subject tend to be less accurate due to altered perspective and angle of observation.
Question 7: At an accident scene you notice skid marks that begin in one lane and end in another. This physical evidence PRIMARILY suggests:
- The driver braked lightly before impact
- The vehicle changed lanes or swerved while braking (Correct answer)
- Mechanical brake failure occurred
- The road surface was dry
Correct answer: The vehicle changed lanes or swerved while braking
Skid marks that cross lane lines indicate lateral vehicle movement during emergency braking, consistent with a lane change or swerve.
CJBAT Observation and Perception Questions and Answers 4
A victim states an attacker had a tattoo 'on the left arm,' but when you re-interview her facing the victim, the tattoo would actually appear on the observer's right.
This is an example of: