Is GPS eroding your sense of direction?
GPS is the cleanest single case of cognitive offloading in the published research. The studies are unusually direct, the findings are consistent, and the practical advice is clear.
What the research shows
The strongest single paper is the 2020 UCL study published in Scientific Reports, which used fMRI to examine spatial memory in participants with varying levels of lifetime GPS use. Two findings stuck:
- People with greater lifetime GPS use had worse spatial memory during self-guided navigation. Asked to navigate without GPS, heavier prior users performed measurably worse than lighter prior users.
- The relationship was likely causal in the GPS-causes-decline direction. Follow-up tracking found that heavier GPS use predicted subsequent decline in spatial memory, not vice versa.
Scientific American's coverage made the same point. A separate 2024 University of California, Santa Barbara study replicated the pattern, finding that heavy GPS users had measurably weaker mental-map formation of their surroundings.
The mechanism is straightforward. Navigating without GPS engages the hippocampus and prefrontal cortex actively — you're building a mental map, choosing among alternatives, predicting which direction is correct. Following GPS turn-by-turn directions through the same route doesn't engage those systems the same way. You're a passive passenger of someone else's mental map.
What this is not
The studies do not show that GPS use causes general cognitive decline. They do not show that GPS users have worse memory for anything other than the spatial information they delegated to GPS. The effect is task-specific.
The studies also do not recommend that anyone stop using GPS. GPS is genuinely useful, especially in unfamiliar areas. The cost is real and contained.
What to do about it
The published advice converges on the same pattern that shows up across the whole cognitive-offloading literature — same logic as the Google effect, cognitive debt, and skill atrophy.
Use GPS deliberately. Use it for genuinely unfamiliar territory. Don't use it for routes you take regularly. The act of navigating familiar territory without help is the practice surface.
Try navigating without GPS occasionally. Pick a familiar destination and get there without turn-by-turn directions. The skill responds to use.
Pay attention to landmarks even when GPS is on. The Scientific American coverage notes that even when you have GPS active, you can engage the spatial-memory system by deliberately noticing landmarks and building your own mental map. The GPS becomes a backup rather than a substitute.
Why this is the cleanest case for cognitive offloading
The GPS finding is the most direct illustration of the broader cognitive-offloading pattern. Search engines and AI assistants offload many cognitive acts at once, which makes the effect harder to measure. GPS offloads one specific cognitive act — spatial navigation — and the effect of doing so is cleanly measurable.
If you want a single, easy-to-believe example of how heavy tool use can quietly degrade an underlying skill, the GPS literature is it. The same logic applies, with less precise measurement, to most of the AI-era concerns this site covers.
