PPAER Observation and Memory Recall 2 — Questions and Answers
Question 1: A witness describes a suspect's vehicle as 'dark-colored, four-door, with a dent on the rear bumper.' Which detail is most likely to be inaccurate when recalled later?
- The number of doors
- The dent location
- The general color (Correct answer)
- Whether it was a car or truck
Correct answer: The general color
General color descriptors like 'dark' are often misremembered because witnesses encode approximate hue rather than specific shade, making it susceptible to distortion over time.
Question 2: An officer observes a scene for 30 seconds, then is asked to recall it. Which memory technique best improves later accuracy?
- Repeating the scene description aloud immediately
- Closing eyes and mentally scanning the scene zone by zone (Correct answer)
- Writing notes only about moving objects
- Focusing exclusively on faces present
Correct answer: Closing eyes and mentally scanning the scene zone by zone
Mentally scanning a scene in systematic zones (left-to-right, near-to-far) encodes spatial layout more completely than selective or verbal rehearsal alone.
Question 3: You observe a suspect wearing: blue jeans, white sneakers, a red hoodie, and a black baseball cap. Thirty minutes later you recall 'blue jeans, white shoes, a dark hoodie.' What memory error occurred?
- Source confusion
- Retroactive interference
- Color generalization (Correct answer)
- Confabulation
Correct answer: Color generalization
Color generalization occurs when a specific vivid color (red) is remembered only as a broad category (dark), a common perceptual memory compression.
Question 4: An officer needs to remember the license plate 'XRT-4829.' Which strategy is MOST effective?
- Repeating the full plate silently three times
- Chunking as 'XRT' plus '48-29' and creating a brief verbal cue (Correct answer)
- Writing only the numbers and recalling letters from context
- Associating the plate with a familiar face
Correct answer: Chunking as 'XRT' plus '48-29' and creating a brief verbal cue
Chunking breaks the plate into manageable units and a verbal cue (mnemonic) links the chunks, improving both encoding and retrieval.
Question 5: A study room contains: a desk, two chairs, a bookshelf with five books, a lamp, and a closed window. How many distinct objects are present?
- 8
- 10 (Correct answer)
- 11
- 9
Correct answer: 10
Counting: desk (1), chairs (2), bookshelf (1), five books (5), lamp (1) = 10 distinct objects total.
Question 6: Which factor is most likely to reduce an officer's observation accuracy at a crime scene?
- Arriving after other officers
- High ambient noise at the scene
- Experiencing elevated stress during the incident (Correct answer)
- Having prior knowledge of the location
Correct answer: Experiencing elevated stress during the incident
High stress narrows attention (tunnel vision), reduces peripheral detail encoding, and impairs working memory consolidation during the event.
Question 7: An officer who observed a robbery is asked to describe the suspect's height. The officer says '5'10"' but the suspect is 6'1". This error is BEST explained by:
- The officer fabricating information
- Distance and angle distorting perceived height (Correct answer)
- The officer confusing the suspect with a bystander
- Retroactive interference from news reports
Correct answer: Distance and angle distorting perceived height
Height perception is strongly affected by viewing distance, angle, and reference objects present in the scene, often causing systematic underestimation.
PPAER Observation and Memory Recall 2
A witness describes a suspect's vehicle as 'dark-colored, four-door, with a dent on the rear bumper.' Which detail is most likely to be inaccurate when recalled later?