5.2 Visualization: Facial Identification After Appearance Changes
Key Takeaways
- Visualization is worth 5 of the 65 cognitive items and always uses the same format: a target face is shown, a change is described, and you pick the same person from four altered images.
- Compare structural facial features — head shape, jawline, brow, nose, cheeks — because these do not change when hair, glasses or expression change.
- Work from larger features to smaller ones, and break the face into parts rather than judging it as a whole.
- Skin tone, eye colour and other colouring are not intentionally manipulated; apparent differences come from shadow and angle, so do not decide on colour.
- Look for what is different between the options, not for what is the same, since every distractor is built to share several features with the target.
5.2 Visualization: Facial Identification After Appearance Changes
Visualization is defined by the publisher as "the ability to imagine how something will look when it is moved around or when its parts are moved or rearranged," requiring "the forming of mental images of how people would look after certain changes, such as physical alterations." It sits under Visual Intelligence and is worth five of the 65 cognitive items.
The job rationale is concrete: troopers receive BOLOs — "be on the lookout" bulletins — with photographs and descriptions of suspects. Suspects change hair colour and style, add or remove glasses, grow or shave facial hair, and put on hats. A trooper has to recognise a face despite those changes.
1. The Item Format
Every visualization item on the examination follows one structure:
- A target image of a face is shown.
- A statement describes the change that has been made — for example, "This man removed his eyeglasses."
- Four faces are presented. Exactly one is the same person with the stated change applied. The other three are different people constructed to resemble the target.
The publisher is explicit that "the exam will contain questions that are very similar to the one presented above" and that "each distracting image is designed to mirror certain aspects of the target image, though only one is an exact duplicate."
That last clause is the whole problem: every wrong option will match the target on several features. Matching on some features is therefore not evidence of anything.
2. Compare Structure, Not Surface
The change described in the stem — glasses removed, hair restyled, hat added — is surface. What cannot change is the underlying architecture of the face. Build your comparison entirely on structural features:
| Compare this | Because |
|---|---|
| Head shape — oval, round, square, long | Determined by bone; unaffected by hair or accessories |
| Jawline — narrow, wide, angular, soft | Structural; the fastest large-scale discriminator |
| Chin — pointed, square, receding, cleft | Distinctive and rarely altered |
| Brow ridge — pronounced or flat | A reliable small-feature check |
| Nose — width of bridge, length, tip shape | Highly individual |
| Cheeks — full, gaunt, high or low cheekbones | Follows head shape; good confirmation |
| Eye spacing and set — deep or shallow, close or wide | Structural even when the eyes themselves are covered |
| Ear position and shape | Often overlooked and frequently decisive |
Do not decide on colouring. The publisher states the point directly: "the skin tone, eye color, or other colorations are not intentionally manipulated. Differences noted here may be caused by shadowing effects of the image due to a different facial angle or hair feature. You should identify differences between the faces only by comparing facial features."
If you find yourself eliminating an option because the skin looks a shade darker, stop. You are reading a lighting artefact.
3. Work Large to Small
The publisher's recommended sequence: "start with larger features and work your way through smaller features."
Pass 1 — head shape. Compare the outline of each option against the target. In the official worked example, this pass alone eliminated two of four options: one had "a much broader (wider) face" with fuller cheeks and a wider jawline; another had "a much shorter face (rounder vs. more oval-shaped), with a less-defined chin."
Pass 2 — mid-scale features. On the survivors, compare jawline, cheeks and overall proportions. In the example, one remaining option had "a narrower overall head shape with gaunter (thinner) cheeks and a narrower jaw line."
Pass 3 — small features. If two options are still standing, go to brow ridge, nose width, eye set. In the example, the deciding observations were that one option's "brow ridge is less pronounced than that of the target image" and it had "a slimmer nose than the target's."
Two features are enough to eliminate an option confidently. You do not need to prove the correct answer matches on all eight; you need to prove the other three fail on at least one structural feature each.
4. The Error to Avoid
"A common mistake made by candidates is to not break down the image into smaller pieces. It can be overwhelming to try to take in all the information at once, especially when two faces are very similar… candidates often fail to notice small differences that identify which option choices are incorrect. Instead candidates will focus on what is the same rather than what is different."
That last sentence names the trap precisely. Because every distractor shares features with the target, a search for similarities returns four positive results and no decision. Search for differences. The question you ask of each option is not "does this look like him?" but "what about this face does not match?"
This reframing also speeds you up. Finding one disqualifying difference ends the analysis for that option; confirming a similarity ends nothing.
5. Handling the Described Change
The stem tells you what changed. Use it as an instruction about what to ignore.
| Stated change | Ignore | Rely on |
|---|---|---|
| Removed eyeglasses | Frames, and how the eye area is framed | Eye spacing, brow ridge, nose bridge width |
| Changed hair colour or style | All hair | Hairline shape where visible, forehead height, ear position |
| Added a hat | Anything above the brow | Jaw, chin, nose, ear position |
| Grew or shaved facial hair | The beard or moustache region | Cheekbones, eye set, nose, head outline |
Beards are the hardest case, because facial hair obscures the jawline that would otherwise be your best discriminator. When the change involves facial hair, shift your weight onto the upper face: brow, eye set, nose, and the shape of the skull above the ears.
6. Practice
The publisher does not prescribe a visualization drill, but two are effective and require nothing:
- Structure naming. Pick any portrait photograph and write five structural descriptors — head shape, jaw, chin, brow, nose. Then find a second photograph of a different person and write the same five. The habit of describing faces in these terms is what makes on-screen comparison fast.
- Change simulation. Take a photograph of someone you know wearing glasses and one without. Look at how much of the visual impression changes and how little of the structure does. This calibrates you against exactly the illusion the item exploits.
The publisher's related note is that study aids for its NCJOSI2 and LST examinations do exercise visualization, so those materials are a legitimate supplement for this block specifically — unlike memorization, vocabulary and pattern recognition, which they do not cover.
A visualization item shows a target face and states that the man has shaved his beard. A candidate notices that option B has the same eyebrows and the same hairstyle as the target and selects it. What is wrong with this reasoning?
Comparing four options against a target face, a candidate observes that option C has noticeably darker skin tone than the target but matches on head shape, jawline, brow and nose. How should he treat the skin tone difference?
Which sequence best matches the publisher's recommended approach to a visualization item?