# Wendy Wood
Wendy Wood is an American social psychologist and one of the world's leading researchers on [[Habit Formation]]. A professor at the University of Southern California, Wood's research has fundamentally changed how we understand habits—showing that nearly 43% of daily behaviors are performed habitually, largely outside conscious awareness. Her work demonstrates that habits are not about willpower or motivation but about context: the cues, environments, and repetition that make behaviors automatic.
Wood's 2019 book *[[Good Habits, Bad Habits]]* synthesizes decades of research for general audiences, explaining why willpower-based approaches fail and how to design environments that make desired behaviors effortless. Unlike [[Roy Baumeister]]'s focus on self-control as a depletable resource, Wood emphasizes that habits bypass the need for self-control entirely—once formed, they execute automatically in response to context cues. Her research has influenced [[Behavioral Design]], public health interventions, and productivity systems. She argues that successful behavior change requires "friction" manipulation: reducing friction for good habits, increasing it for bad ones.
## Key Contributions
| Contribution | Description |
|--------------|-------------|
| **Habit frequency research** | 43% of daily behaviors are habitual |
| **Context-dependent automaticity** | Habits triggered by environmental cues |
| **Friction theory** | Ease/difficulty determines behavior |
| **Habit discontinuity** | Life changes disrupt habits (opportunity for change) |
| ***[[Good Habits, Bad Habits]]* ** | Popular science book (2019) |
## Core Ideas
| Idea | Description |
|------|-------------|
| **Habits ≠ willpower** | Habits bypass conscious decision-making |
| **Context is key** | Same behavior, different context = no habit |
| **Friction matters** | Small barriers have large effects |
| **Repetition + reward** | How habits form neurologically |
| **Habit discontinuity** | Major life changes break habit loops |
| **Environment design** | Change context, change behavior |
## Habit Formation Model
| Element | Role |
| ------------------ | ----------------------------------- |
| **Cue** | Environmental trigger |
| **Routine** | The automatic behavior |
| **Reward** | Reinforces the loop |
| **Repetition** | Builds automaticity over time |
| **Stable context** | Same time, place, preceding actions |
## Research Findings
| Finding | Implication |
|---------|-------------|
| **43% habitual** | Most behavior is automatic |
| **Context transfer fails** | Habits don't travel to new environments |
| **Willpower depletes** | Can't rely on it long-term |
| **Small frictions matter** | Moving snacks 6 feet reduces consumption 50% |
| **Habit change windows** | Life transitions are opportunities |
## Friction Manipulation
| For Good Habits | For Bad Habits |
|-----------------|----------------|
| Reduce steps | Add steps |
| Make visible | Hide triggers |
| Prepare in advance | Create delays |
| Place in path | Remove from environment |
| Pair with existing routine | Break context associations |
## Quotes
<!-- QueryToSerialize: LIST FROM #type/quote AND [[Wendy Wood]] WHERE public_note = true SORT file.name ASC -->
## Books
<!-- QueryToSerialize: LIST FROM #type/book AND [[Wendy Wood]] WHERE public_note = true SORT file.name ASC -->
<!-- SerializedQuery: LIST FROM #type/book AND [[Wendy Wood]] WHERE public_note = true SORT file.name ASC -->
- [[Good Habits, Bad Habits]]
- [[Tiny Habits]]
<!-- SerializedQuery END -->
## References
- Wood, Wendy. *Good Habits, Bad Habits* (2019)
- https://dornsife.usc.edu/wendywood/
- https://en.wikipedia.org/wiki/Wendy_Wood_(psychologist)
## Related
- [[Habit Formation]]
- [[Good Habits, Bad Habits]]
- [[Behavioral Design]]
- [[BJ Fogg]]
- [[James Clear]]
- [[Roy Baumeister]]
- [[Phillippa Lally]]
- [[Automaticity]]
- [[Environment Design]]
- [[Decision fatigue]]