Growth
165 bites tagged Growth — interview questions with model answers, and 60-second explainers.
Hypothesis-Driven Development: Test Your Ideas Before You Build
Hypothesis-Driven Development treats product work as a series of experiments, not a to-do list. You state a testable belief ("If we build X, users will do Y") before writing code. This de-risks new features by validating ideas early.
The IKEA Effect: Why We Overvalue What We Build
The IKEA effect is our tendency to overvalue things we help build. It's used in products that let users customize profiles or dashboards, increasing their investment. The footgun: if the task is too hard or fails, users feel incompetent and abandon it.
Variable Rewards: The Engine of Habit
Variable rewards make products sticky by creating unpredictable payoffs, like a slot machine. This drives repeat actions in social feeds or games. The footgun is that overuse can feel manipulative and lead to user burnout or accusations of addictive design.
Nudge Theory: Shaping Choices Without Forcing Them
Nudge theory influences behavior by subtly redesigning the environment where choices are made. It's used in product design to guide users toward desired actions, like setting smarter defaults.
The Hook Model: Designing for Repeat Engagement
The Hook Model engineers user habits with a 4-step loop: Trigger, Action, Variable Reward, and Investment. It's a framework for building products people return to on their own, common in social media and games.
Fogg Behavior Model: Why Users Act (or Don't)
The Fogg Behavior Model states a behavior only happens when Motivation, Ability, and a Prompt converge (B=MAP). Use it to diagnose why a feature fails or to design new ones. The footgun is blaming low motivation when the real issue is low ability.
Social Proof: People Copy People
Social proof is the tendency to copy others' actions, assuming they reflect the correct behavior. It’s why we trust a product with thousands of positive reviews or a restaurant with a long line. The footgun: the crowd can be wrong or even faked.
Loss Aversion: Why Losing $10 Hurts More Than Gaining $10
Loss aversion is the bias where losing something feels twice as bad as gaining the same thing feels good. It drives user behavior in free trials and pricing. Don't confuse this emotional reaction to framing with rational risk aversion.
Attribution Modeling: Who Gets Credit for a Conversion?
Attribution modeling decides how to credit different marketing channels for a conversion. It's like splitting a sales commission: does the first call, the final meeting, or everyone involved get credit? The footgun is using a simplistic model like last-touch.
Event-based Analytics: Tracking User Actions, Not Page Views
Event-based analytics tracks specific user actions—clicks, purchases, signups—not just page views. This model powers product analytics tools to map user journeys and measure feature adoption. The footgun is tracking everything, creating noisy, unusable data.
RARRA Framework: Retention Over Acquisition
The RARRA framework flips the classic AARRR funnel, prioritizing Retention over Acquisition. In crowded markets, it's cheaper to keep a user than to find a new one. Use it when acquisition costs are high.
Customer Lifetime Value (LTV): A Customer's Future Net Profit
LTV predicts the total net profit a customer will generate over their entire relationship. It's used to set marketing budgets and prioritize features for high-value users.
Churn Rate: How Fast Your Business is Leaking
Churn rate is your business's leak rate—the percentage of customers lost over a period. It's a vital health metric for subscription services like SaaS or streaming. The footgun?
User Activation: Engineering the 'Aha' Moment
User activation engineers the 'aha' moment when a new user first experiences your product's value. It's measured by a key action, like sending a message in Slack, that predicts retention.
The Customer Lifecycle: From Prospect to Advocate
The customer lifecycle maps the journey from first contact to loyal advocate. It's used to decide when to send a welcome email (acquisition), a loyalty discount (retention), or a 'we miss you' offer (win-back). The footgun is focusing only on acquisition.
ICE Score: A Quick Framework for Prioritizing Ideas
The ICE score is a quick framework for ranking ideas by asking: what's the potential Impact, our Confidence in the outcome, and the Ease of implementation? Growth teams use it to prioritize experiments, balancing big bets with quick wins.
High-Tempo Testing: Move Faster Than Your Channels Decay
High-tempo testing treats growth as a continuous experiment, not a one-time campaign. Since marketing channels decay quickly, this lets you find new wins across the entire user journey.
Marketing Attribution: Who Gets Credit for a Sale?
Marketing attribution decides which ad or email gets credit for a sale. It helps justify marketing spend by showing which channels work, preventing the common mistake of giving 100% credit to the final click and ignoring what built initial interest.
Email List Hygiene: Quality Over Quantity
Think of list hygiene as pruning a garden: you remove dead contacts so engaged users thrive. This maintains sender reputation with providers like Gmail, ensuring messages land in the inbox.
Email Marketing: A Conversation, Not a Megaphone
Email marketing uses email to nurture customer relationships, not just to send ads. It aims to build loyalty, acquire new customers, and drive sales by sending targeted commercial messages. The footgun is treating every email as a hard sales pitch.
Activation Rate: Measuring the 'Aha!' Moment
Activation rate measures the percentage of users who experience your product's core value, not just sign up. It's a key metric for diagnosing onboarding effectiveness. The common mistake is tracking 'completed onboarding' instead of the 'aha!'
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