I find the human truth in complex products and build messaging that moves markets.

People feel losses about twice as intensely as they feel equivalent gains. Yet most free trials frame the upgrade as gaining features: "unlimited exports, priority support." That's a gain frame, and the brain hears it mildly and moves on.

Now try the loss frame: "Your trial ends Friday. You'll lose access to the projects you've already built." The brain starts simulating the loss instead of registering information. This isn't manipulation, the loss is real, you're just describing it accurately.

For PMMs: audit your upgrade screen. If every sentence is about gaining, rewrite half toward what's lost if the user doesn't act.

Further reading: Kahneman & Tversky, Prospect Theory (Econometrica, 1979) ↗

Every B2B site has a logo bar. Most don't work anymore, because a logo bar aggregates social proof until it's meaningless. "Trusted by 500 companies" tells a buyer nothing about whether it will work for them specifically.

Specificity converts. One quote, one metric, one case study link beats fifty grey logos, because it answers the only question that matters: will this work for someone like me?

For PMMs: replace the logo bar with three specific, quotable, metric backed stories. One real story beats fifty silent logos.

Further reading: Social proof, overview and origins ↗

The middle plan doesn't win because it's the best value, it wins because of anchoring, the bias where the first number you see shapes how you judge every number after it.

This is why three tier pricing outperforms two. The most expensive plan isn't there to be bought, it exists to make the middle plan look reasonable by comparison.

For PMMs: if you have two tiers, add a third at 2 to 3x the price of the plan you actually want to win.

Further reading: Tversky & Kahneman, Judgment under Uncertainty (1974) ↗

Small yeses lead to big yeses. Classic research shows people who agreed to a small request were far more likely to agree to a much bigger one later, because they'd already committed to being "the kind of person" who says yes to that cause.

In onboarding, this means asking for one small thing at a time rather than a big setup form upfront.

For PMMs: map onboarding as a series of small commitments. By step 5, the upgrade becomes the sixth yes, not the first.

Further reading: Freedman & Fraser, foot in the door technique (1966) ↗

Unfinished tasks stick in memory, finished ones disappear. This is why half completed onboarding feels worse than no onboarding at all, it sits in the user's head like an open tab.

Most products use this badly, showing a bare progress percentage and hoping discomfort drives completion.

For PMMs: show the specific remaining steps and time estimate, not just a percentage. That's a map, not pressure.

Further reading: Zeigarnik, on unfinished tasks (1927) ↗

If someone gives you something, you feel an urge to give back. The brain tracks social debt the way it tracks financial debt, which is why freemium works when the free tier feels like a genuine gift, not a crippled sample.

For PMMs: ask whether someone could use your free tier forever and get real value. If not, it's a trial with extra steps, not freemium.

Further reading: Reciprocity in social psychology ↗

The brain learns fast. The first time someone sees "Only 3 left!" and it's still there tomorrow, the signal gets filed as noise, and eventually the brand's other claims get discounted too.

For PMMs: audit every scarcity claim. If it's true, keep it and make it specific. If not, remove it, no signal beats a fake one.

Further reading: Cialdini, Influence: The Psychology of Persuasion ↗

The first thing someone associates with your brand becomes the lens for everything that follows, which is why positioning is close to a one shot decision. You can pivot later, but the halo from the first impression lingers.

For PMMs: name the one thing you want to be known for in one sentence, then audit every touchpoint against it.

Further reading: Thorndike, on the halo effect (1920) ↗

The brain treats fluency as a signal of truth, a shortcut it uses to decide what to trust without thinking too hard. This is why "less is more" isn't just aesthetic preference, it's measurable behavioural science.

For PMMs: read your headline out loud. If you stumble, simplify until a 12 year old could follow it, then simplify once more.

Further reading: Zajonc, the mere exposure effect (1968) ↗