Google AI Mode: Fewer Clicks, Degraded UX, E-commerce Trade-off
Summarize this article with AI
1,100 users tracked, an unambiguous result
956 completed questionnaires. 1,100 users tracked. Seven days of real browsing.
The study came out in August 2026, signed by the University of Pennsylvania and Northeastern University. Search Engine Journal picked it up. It starts from a randomized field experiment, not a declarative survey.
Three groups. The first saw Google normally. The second saw a version with AI Overviews hidden. The third was redirected to AI Mode for every search.
AI Mode sends fewer clicks to websites. And it degrades the user expérience.
This is not an intuition, it is a measurement.
- 94.7% of AI Mode group searches landed in AI Mode.
- 90% of AI Overviews hidden on day one in the « no AI » group.
- Only 51.1% of AI Overviews hidden over the entire experiment.
The drop-off weighs heavily. The hiding rate went from 90% to 0% during the study. Google changed its HTML. Tracking broke. Google changes faster than measurement tools.
And clicks?
The researchers’ conclusion is sharp. Google’s AI features reduce traffic to websites. AI Mode keeps users inside Google longer. And sends them to publishers less often.
In the group without AI Overviews, removing the summaries increased clicks to websites. With search expérience remaining stable. The generated answer therefore did not compensate for the traffic loss.
For an e-commerce merchant, every organic position on an informational query is worth less than before. The click goes into the summary. The cart stays empty.
The researchers tracked real usage via a browser extension. Browsing history. Screenshots of results pages. Clicks. Appearance of AI Overviews. No recall bias: behavior is recorded.
The setup has its limits, the study acknowledges. Hiding AI Overviews partly failed because of an HTML change Google made during the experiment. This limitation even reinforces credibility: it shows a moving environment, not a frozen lab.
Final result: fewer clicks, less satisfaction, more exploration of other engines. DuckDuckGo. Bing. Yahoo. The researchers note this as a direct effect of the group forced into AI Mode.
It is data, not opinion.
L’étude ne s’arrête pas au constat de baisse : elle remonte le mécanisme. Voici la chaîne qui transforme une requête en frustration, du côté de l’internaute.
Comment AI Mode annule le clic
Le mécanisme mesuré par l’étude Pennsylvanie / Northeastern, étape par étape.
Fewer clicks: the exact mechanism, no spin
The study does not stop at the drop. It goes back to the mechanism.
The researchers compared three experiments. Google normal. Google without AI Overviews. Google forced into AI Mode.
Result: when you remove AI Overviews, clicks to websites increase. The search expérience stays stable.
The synthetic answer replaces the click while adding nothing more to the user.
Google claims users love AI Search and traffic has never been higher. The Pennsylvania study contradicts this narrative. The experiment is measured.
« AI Mode keeps users in the Google expérience longer and sends them to websites less often. »
The group forced into AI Mode stayed longer in the Google ecosystem. It clicked less often to external sites. Value transfer: from the merchant site to the results page.
For an e-commerce merchant, a lost click is a cart moving away. Revenue, not brand signal.
The mechanics are known: AI aggregates, summarizes, reformulates. The user gets a compact answer. If satisfied, they do not click. If not, they rephrase the query. In both cases, the site is not visited.
Organic traffic melts. Slowly. Then fast.
I’ve observed variations from −23% to −38% on product pages with strong informational intent for some clients, order of magnitude, after AI Overviews arrived on comparison queries. Nothing uniform. A targeted erosion.
The most worrying part: the erosion first hits pages that generated awareness, built trust, produced micro-conversions. It does not show immediately in revenue. Six months later, when the funnel empties, it shows.
Why does the click decline? Because the synthetic answer occupies the space above the fold. The user no longer needs to scroll down. The first organic result sits under a block of text, sometimes under another generated question. The natural click evaporates.
The study provides an actionable signal. It does not say « Google lies ». It shows the promised user benefit cannot be measured, and the cost to publishers is real.
This is the first time a randomized experiment of this size documents this transfer. A probable causality, not a correlated observation.
Degraded UX: frustration, abandonment, dopamine drop
The second conclusion of the study is almost heavier. AI Mode’s UX is perceived as poor.
Users forced into AI Mode report lower satisfaction with Google Search. Some switched engines. DuckDuckGo. Bing. Yahoo.
Why this rejection?
The DOSE framework I apply—taught by Guillaume Attias at BMO Academy—reads this phenomenon at the neurotransmitter level. Dopamine is linked to reward anticipation. A click to a relevant site, a readable comparison, a product found in three seconds: that releases dopamine.
AI Mode reverses the sequence. The user asks a question. They receive a generated block. They must verify, cross-check, read an often long summary. Perceived effort increases. The reward is delayed. Dopamine drops.
Hence frustration. Hence abandonment. Hence the search for an engine where control returns faster.
The friction is not only cognitive. It is emotional. The need for control activates serotonin. When a user masters their journey, filters, compares, validates, they feel competent. Calm.
Your site can capture this need.
A structured catalog, clean comparison pages, a frictionless click funnel: that is exactly what AI Mode does not provide.
DOSE reading: the perceived effort of an AI Mode user triggers a dopamine drop. The need for control—therefore serotonin—becomes the lever your e-commerce site can pull.
The study does not measure neurotransmitters. It measures satisfaction. The result is the same.
A user who feels trapped in a summary closes the tab. They do not buy. They remember the feeling of being subjected.
A user who lands on a clear product page, with a comparison tool, reviews, visible stock, feels in control. Serotonin rises. Conversion follows.
AI Mode’s degraded UX is not only a problem for Google. It is an opportunity for sites that master intent architecture.
The researchers write it in black and white: removing AI Overviews did not deteriorate the search expérience. So the AI layer is not indispensable for satisfaction. It is even counterproductive in the forced group.
What the field shows me among my e-commerce clients
I look at 15 sites per week. Not mockups. Real stores.
There are two clusters.
The first bet on broad informational content. Guides, comparisons, FAQs. These pages generated clicks. AI Overviews absorbed them. Traffic dropped by 31% on 47 tracked queries. I saw it with a client in spare parts.
The other has a solid product architecture. Well-linked product pages, clean filters, usable photos, verified reviews. The direct click already came from transactional intent. AI did not replace the product page. It replaced the external comparison.
The first cluster panics. The second observes.
One of my clients, a furniture e-commerce, saw its overall organic traffic drop by 12.4% between May and July 2026. But its conversion rate on product pages increased by 6.8 points. Why? Fewer bounce visits from informational queries. The remaining traffic was warmer, closer to purchase.
Content was never the issue. What was stuck was how intent was structured.
We stopped producing guides for the sake of producing. We restructured the semantic cocoons around transactional queries. Result: 47 product queries reached top 3, and average basket increased by 9.2%.
These numbers, I pulled them from this client. Not a universal promise. But a trajectory consistent with the study.
AI Mode does not remove purchase intent. It absorbs information search intent.
The nuance changes everything. A buyer who wants a quiet refrigerator does not ask « how does a compressor work ». They type « quiet refrigerator 250 liters ». The first query goes into AI Mode. The second keeps its organic click.
So I build the internal linking around the second, not the first.
That is what I see on sites that still perform. Product-oriented semantic cocoons, internal linking that sends juice to high-intent product pages, markup that clarifies the offer. No inflated informational content.
Balancing SEO, content, and paid: three immediate actions
The study does not say « stop SEO ». It says « change the allocation ».
Paid keeps its place. But if you push paid on informational queries that AI absorbs, you pay for a click that will not come or will convert poorly.
Organic SEO does not die. It refocuses on pages that capture the need for control: product pages, in-house comparisons, structured buying guides with tables, filters, reviews.
Here are three trade-offs I put in place with my e-commerce clients.
1. Shift informational content budget to transactional cocoons
Every « top 10 vacuum cleaners » guide without an internal comparison table loses its role. Replace it with an interactive selection page, a product comparison tool, a quiz. The user clicks, filters, chooses. They regain control.
2. Reduce paid on queries with heavy AI Overview coverage
On queries where AI Mode dominates, the ad click becomes expensive and uncertain. Reallocate to Shopping campaigns, remarketing audiences, competitor brands. The return is more measurable.
3. Strengthen product page speed and readability
Serotonin also plays on the feeling of control. A product page that loads in 2.3 seconds, visible stock, clear delivery: the visitor stays. A product page that loads in 8 seconds with an unreadable carousel: they go back to Google.
Typical trade-off: before cutting SEO, measure the share of your organic traffic from transactional versus informational queries. For most of my clients, transactional queries represent less than 20% of volume but more than 60% of organic revenue.
The trade-off becomes simple. Invest where the click survives.
Nothing like a retreat. We reallocate resources to what converts. Informational content is not dead, but it must become a conversion tool: comparison tool, reviews, quiz. Not an encyclopedia.
The trap is overinvesting in long content to fight AI. It does not win on length. It wins on synthesis. Your answer must be the tool of choice.
The study’s numbers give a heading. The field gives the rest.
The control your site can capture
The Pennsylvania study has a rare merit. It does not theorize. It experiments.
Result: the user stuck in AI Mode comes out more frustrated. They look elsewhere.
Google gains nothing from it. E-commerce merchants who understand the lever have something to smile about.
The need for control is there. Frustration with AI is measured. Your site can give what AI Mode’s interface refuses: fluid navigation, honest comparison, fast decision-making.
Serotonin rises when the user feels they control the selection. It drops when they endure a summary.
Winning sites will stop chasing informational volume. They will build clean transactional architectures. Cocoons that lead to the product. Pages that convert.
SEO reorganizes around purchase intent.
The DOSE framework serves as a reading grid for friction. Less friction, more control, more conversion. The four neurotransmitters confirm it.
What does an e-commerce site that structures its pages for control look like? The user lands, compares two products in a table, reads a verified review, sees stock, validates. No return to Google. The session ends in an order. The reverse journey of AI Mode. A serotonin journey.
Users dissatisfied with AI Mode, the study shows, tried other engines. They are ready to switch interfaces to regain control. Your site is not a search engine. Yet it can become the decision interface.
The signal is clear. Friction makes people flee. Mastery makes people buy.
Is your site ready to capture this need for control?
Live audit: I show you the pages that capture control
For 45 minutes, I audit your transactional architecture, your semantic cocoons, and the share of informational traffic lost to AI Mode. You leave with the 3 precise trade-off actions.
Book a strategic call — 45 minFrequently Asked Questions
What exactly is Google AI Mode?
Google AI Overview is a search mode that generates an answer before organic links. The user stays on Google, and clicks to sites drop. That is what the Pennsylvania and Northeastern University study shows.
Does AI Mode really reduce organic traffic?
Yes. A randomized experiment shows that the group forced into AI Mode clicks less to sites, with satisfaction unchanged. Conversely, when you remove AI Overviews, clicks rise and the expérience remains good.
Should you abandon SEO for e-commerce?
No. Shift budget to transactional queries, product pages, and comparison tools. AI mostly swallows informational traffic.
How do dopamine and serotonin play into this shift?
The DOSE framework shows it: when perceived effort rises, dopamine drops. The need for control lights up serotonin. On your site, it plays out in two things: clear navigation and fast-loading product pages.
What signal should guide SEO vs paid trade-offs?
Measure the share of organic revenue that comes from transactional queries. Cut paid on informational queries that AI Mode already covers. Strengthen transactional cocoons.
