Observation, Memory, and Spatial Reasoning
Observation, Memory, and Spatial Reasoning
This domain tests what you notice and what you retain, plus whether you can rotate, orient, and map objects and locations mentally - the skills behind broadcast descriptions, vehicle identification, and directing units to an address.
Core rules and concepts
- Fixed encoding order for people. Sex, race/ethnicity if known, age, height, weight or build, hair, eyes, facial hair, marks and tattoos, then clothing from head to toe. A fixed sequence prevents omissions under stress.
- Vehicles. Color, year, make, model, body style, plate; add damage, stickers, and accessories.
- Memory techniques. Chunk a plate (3-3 or 4-3), rehearse it aloud immediately, and link new details to something already known.
- Spatial technique. Convert every turn to a compass direction ("right" while facing north = east) and sketch before answering. In mirror and rotated figures, track one reference point through the transformation.
Worked example
A trooper travels 3 miles north, turns right and travels 4 miles, then turns right again and travels 3 miles. Where is she relative to the start?
Reasoning: start at (0,0). North 3 → (0,3). Facing north, a right turn is east: 4 miles east → (4,3). Facing east, a right turn is south: 3 miles south → (4,0). She is 4 miles east of the start, back on the starting latitude - the two 3-mile legs cancel vertically. The sketch confirms it in seconds.
Traps
- Treating "right" and "left" as fixed compass directions instead of relative to current heading.
- Describing a person in random order and losing height or a distinguishing mark.
- Locking onto the first obvious detail and never scanning for the second person or the weapon.