Marketers talk a lot about clicks, conversions, and customer journeys. But underneath all the dashboards and KPIs, marketing is about one thing: human behavior.
There’s a simple way to think about it:
BEHAVIOR = f (P × Sf)
In other words, behavior is a function of two things:
Personality (P): the traits, tendencies, and inner wiring of a person.
Surrounding factors (Sf): the environment, context, and external triggers around them.
Behavior is what we see | Personality is what we guess | Surrounding factors are what we can influence.
This equation isn’t just theory. It explains why your marketing campaigns succeed or fail.
Personality vs. Surroundings: Who Wins?
At first glance, personality feels fixed: introverts vs. extroverts, planners vs. procrastinators, savers vs. spenders. But research shows that surroundings often outweigh personality when it comes to observable behavior.
- An honest person may cheat if the environment makes it easy and consequence-free.
- A cautious spender may splurge if scarcity is signaled: “Only 2 left in stock.”
- A disciplined eater may grab fast food if it’s 11 p.m. and the only option open.
That’s why marketers shouldn’t obsess over personality traits alone.
Instead, they should design surroundings that shape behavior.
Surroundings as the Invisible Hand
Surrounding factors are powerful because they operate quietly. They nudge decisions without people realizing it.
Think about it:
- Layout: A supermarket puts milk at the back so you walk past other products first.
- Defaults: Your phone auto-subscribes you to updates unless you opt out.
- Cues: A coffee shop plays upbeat music in the morning to speed up the line.
In each case, the environment shapes behavior more than personality.
Fresh Real-World Examples
Let us understand through real world examples how it works:
What This Means for Marketing
When trying to change customer behavior, don’t start by asking: “What kind of people are they?”
Instead, ask: “What kind of situation are they in?”
Want more sign-ups? — Reduce friction: pre-fill forms, enable one-click logins.
Want more engagement? — Alter surroundings: add notifications, streaks, reminders.
Want premium adoption? — Frame the environment: anchor a high-priced plan so the mid-tier looks irresistible.
Personality may predict tendencies. But surroundings shape actions.
The Three Golden Questions for Marketers
When designing campaigns, check every strategy against these three questions:
Motivation: Do they want to do this? (Personal value, emotional drive.)
Ability: Can they do it easily? (Skills, simplicity, friction reduction.)
Opportunity: Does the environment allow it? (Defaults, triggers, context.)
If all three align, behavior changes.
If even one is missing, it stalls and never moves the needle.
Final Thought
Behavior isn’t a mystery. It’s an outcome of who people are (personality) multiplied by where they are (surroundings).
Marketers can’t rewire personalities overnight. But they can engineer environments where the desired behavior becomes the easiest, most natural option.
- Amazon didn’t change personalities. It changed surroundings (1-click).
- Netflix didn’t change personalities. It changed surroundings (auto-play).
- Disney didn’t change personalities. It changed surroundings (FastPass).
That’s the real power of behavioral marketing: not to fight human nature, but to frame it, guide it, and work with it.
Because when you master surroundings, behavior follows.
About the Author: Jawahar Kaushal
