Module 2 · How habits work · Supported by multiple studies

Cue → behaviour → consequence

The three-part pattern behind every habit, and the triggers that set it off.

6 min read · Level: Beginner · Free — no account needed to read

The problem it solves

What is the basic pattern underneath every habit?

The concept

Most habits follow a three-part pattern: a cue (what comes just before), a behaviour (what you do), and a consequence (what follows). Psychologists have used versions of this pattern for decades; popular books call it the habit loop.

Triggers are the cues that reliably set a behaviour off. They can be external — a notification, a place, a person — or internal, like boredom, stress or tiredness.

The consequence matters because it teaches. If the behaviour is followed by something good (relief, pleasure, a sense of progress), the pattern is more likely to repeat.

Why it matters

Seeing a habit as cue → behaviour → consequence gives you three places to act: change the cue, change the behaviour, or change what follows it.

Supported by multiple studies: Many studies, often pooled in reviews or meta-analyses, point the same way. It still works better for some people and situations than others.

See it happen

Every time Sam opens his laptop to work, he first checks the news for fifteen minutes.

The ordinary first approach

He just gets distracted easily.

With the idea

He maps it: cue — laptop opens; behaviour — news; consequence — a small hit of novelty and delay of a hard task.

What changed

A vague “distraction” became three specific points he can change.

Easy to get wrong

• Only looking at the behaviour and ignoring what starts it and what it gives you.
• Assuming the trigger is always outside you — feelings are common cues.
• Treating the popular “habit loop” as the full science; real habits involve context and many overlapping cues.

Different perspectives

Where the field genuinely disagrees. None of these is presented as the answer.

The loop is a helpful simplification

Cue, behaviour and consequence give ordinary people a clear way to look at a habit and find something to change.

The loop hides complexity

Researchers point out that context is a web of cues, rewards matter mostly while a habit forms, and strong habits can run even after the reward stops mattering.

Try it now: Map one habit

1. Pick one habit, wanted or not.
2. Write its cue, the behaviour, and the consequence that follows.
3. Circle the part that would be easiest to change.

Apply it to one of your habits

For one of your habits, write its cue, the behaviour and what follows it.

Reflect

• Did any of your cues turn out to be feelings rather than places or times?

Go deeper — evidence & sources

• Wood & Rünger (2016). Psychology of Habit. Annual Review of Psychology. doi:10.1146/annurev-psych-122414-033417
• The habit loop — cue, routine, reward
• The Power of Habit — Charles Duhigg (2012)