A first step almost everyone accepts

• Diagnostic question

  Weekly sign-ups or orders

  traffic volume question

  Sizes the traffic at the step that matters, which decides whether a standard A/B test can read in time or small-sample designs apply.

• Diagnostic question

  The key action at each stage

  desired actions question

  Names the one action wanted from users at each lifecycle stage, so every lens rates the right behavior.

• Diagnostic question

  Quick scan: what brings users back

  external trigger quick scan

  The second of Hooked's five fundamental questions, used as the default quick scan of the external-trigger link.

• Diagnostic question

  Quick scan: the simplest action

  action quick scan

  The third of Hooked's five fundamental questions, used as the default quick scan of the action link.

• Diagnostic question

  User quick ratio

  growth accounting question

  Computes new plus resurrected over churned users for the last 28 days, and how long it has been below 1.

• Diagnostic question

  Organic share of new activated users

  organic growth question

  Finds the share of new activated users who arrived without paid acquisition, and its direction.

Sources

• Influence · Robert Cialdini

  Ch.3, p.55 · Ch.3, p.53

Source IDs: INF-Q-036 · INF-Q-037 · INF-T-CC-05

Book content is paraphrased, never quoted at length. Last verified October 24, 2026.