A line of inquiry

Choice Science

Why a buyer picks one business over another once both are found.

Being found is only half the job. This line is about the moment of choosing: the reviews, the reputation, the signals of trust, and the mental shortcuts that decide who wins a considered purchase, read against the research on how people actually make up their minds.

33 pieces in this line, across 28 threads.

Original research

Studies from this line of inquiry

Research

Reputation Physics

Buyers now demand fresher, more numerous, and imperfectly rated reviews than they did a year ago, and the businesses AI engines choose to recommend look different from the ones winning on search rank alone.

6% to 45% Share of US consumers using AI tools like ChatGPT to find local business recommendations, in one year Read the study · 9 min
Research

The Consideration-Set Collapse

Buyers were already comparing a handful of options before any engine got involved. What a single synthesized answer removes is the visible list itself, and no one has yet measured what replaces it.

7, plus or minus 2 Human working-memory capacity for holding discrete items in mind at once, the cognitive ceiling behind why shortlists were always short Read the study · 9 min
Research

The Credence-Good Problem in an AI World

When a buyer can't judge your work until it's too late, AI answers aren't closing that old trust gap, they're moving it, and the habit of checking a second source is fading right when it matters most.

49% of US adults now use AI chatbots, up from 33% a year earlier; ChatGPT use specifically rose from 18% to 44% Read the study · 11 min
Research

The Local-Intent Shift

Near-me searches no longer settle on one ranked page: they scatter across classic search, AI answers, and reviews, and the evidence shows that winning one surface is no guarantee you win the others.

8% vs 15% Click-through rate on a traditional search result when an AI summary appears, versus when it does not Read the study · 12 min
Research

The Speed-to-Answer Standard: Four Decades of Delay Data and the AI-Answer Frontier Nobody Has Measured Yet

Every documented increment of delay carries a measurable cost, and the newest instant-answer layer, generative AI, is now the fastest-growing part of that story with the least independent measurement behind it.

0.1s / 1.0s / 10s Nielsen's three response-time thresholds: instant, flow-preserving, and attention-holding Read the study · 13 min
Research

Trust in the Machine

Chatbot use jumped from a third of US adults to about half in two years, but the moment a synthesized answer appears on a results page, buyers click and verify less, not more.

49% (up from 33% in 2024) Share of US adults who use AI chatbots Read the study · 14 min

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