# Decision Making
Decision Making is the cognitive process of selecting a course of action from multiple alternatives. It involves identifying options, evaluating consequences, and choosing based on preferences, values, or goals. Research in [[Cognitive Psychology]], economics, and neuroscience has revealed that human decision-making is shaped by cognitive biases, emotions, and environmental factors—often deviating from purely "rational" choice.
[[Daniel Kahneman]] and [[Amos Tversky]]'s work on heuristics and biases transformed our understanding of decisions, earning Kahneman the Nobel Prize in Economics (2002). Their dual-process theory distinguishes fast, intuitive "System 1" thinking from slow, deliberate "System 2" reasoning. [[Herbert Simon]]'s [[Bounded Rationality]] further showed that humans "satisfice" rather than optimize. This research has practical applications in behavioral economics, UX design, public policy, and personal productivity.
## Dual-Process Theory (Kahneman)
| System 1 (Fast) | System 2 (Slow) |
|-----------------|-----------------|
| Automatic | Effortful |
| Intuitive | Deliberate |
| Emotional | Logical |
| Unconscious | Conscious |
| Parallel | Sequential |
| Always on | Lazy, requires effort |
Most decisions use System 1; System 2 activates for complex or unfamiliar problems.
## Types of Decisions
| Type | Description | Example |
|------|-------------|---------|
| **Routine** | Habitual, low-stakes | What to eat for breakfast |
| **Tactical** | Medium-term, some analysis | Which project to prioritize |
| **Strategic** | Long-term, high-stakes | Career change, major investment |
| **Under uncertainty** | Unknown probabilities | New market entry |
| **Under risk** | Known probabilities | Insurance purchase |
## Decision-Making Process
```
1. Identify the decision
↓
2. Gather information
↓
3. Identify alternatives
↓
4. Weigh evidence
↓
5. Choose among alternatives
↓
6. Take action
↓
7. Review decision and consequences
```
## Common Cognitive Biases
| Bias | Description | Example |
|------|-------------|---------|
| **Confirmation** | Seek confirming evidence | Reading news that agrees with you |
| **Anchoring** | Over-relying on first information | Price negotiations |
| **Availability** | Overweight recent/vivid events | Fear of flying after crash news |
| **Sunk cost** | Continue due to past investment | Finishing bad movie |
| **Loss aversion** | Losses feel worse than equivalent gains | Holding losing stocks |
| **Overconfidence** | Overestimate own abilities | Planning fallacy |
| **Status quo** | Prefer current state | Not switching providers |
| **Framing** | Influenced by how options presented | "90% fat-free" vs "10% fat" |
## Decision Frameworks
| Framework | Use Case |
|-----------|----------|
| **Pro/Con List** | Simple binary decisions |
| **Decision Matrix** | Multi-criteria comparison |
| **Expected Value** | Quantifiable outcomes with probabilities |
| **Regret Minimization** | Long-term life decisions (Bezos) |
| **10/10/10** | Consider impact at 10 min/months/years |
| **Reversibility** | Two-way vs one-way doors (Bezos) |
| **Pre-mortem** | Imagine failure, work backward |
## Factors Affecting Decisions
| Factor | Impact |
|--------|--------|
| **Emotions** | Mood influences risk tolerance |
| **Fatigue** | [[Decision fatigue]] reduces quality |
| **Time pressure** | Shifts toward heuristics |
| **Social influence** | Conformity, groupthink |
| **Framing** | Presentation affects choice |
| **Defaults** | People often accept defaults |
| **Cognitive load** | More load → simpler heuristics |
## Improving Decision Quality
- **Slow down**: Engage System 2 for important decisions
- **Consider alternatives**: Avoid binary thinking
- **Seek disconfirming evidence**: Counter confirmation bias
- **Use checklists**: Reduce cognitive load
- **Sleep on it**: Allow unconscious processing
- **Limit daily decisions**: Reduce decision fatigue
- **Pre-commit**: Decide in advance to avoid temptation
- **Get outside perspective**: Counter blind spots
## Key Figures
| Person | Contribution |
| ------------------- | ---------------------------------- |
| [[Herbert Simon]] | Bounded rationality, satisficing |
| [[Daniel Kahneman]] | System 1/2, heuristics and biases |
| [[Amos Tversky]] | Prospect theory, framing effects |
| [[Richard Thaler]] | Nudge theory, behavioral economics |
| [[Gerd Gigerenzer]] | Fast and frugal heuristics |
## References
- Kahneman, D. (2011). *Thinking, Fast and Slow*
- Thaler & Sunstein (2008). *Nudge*
- https://en.wikipedia.org/wiki/Decision-making
## Related
- [[Decision-making power]]
- [[Decision fatigue]]
- [[How to fight against decision fatigue]]
- [[Decision-making (MoC)]]
- [[Bounded Rationality]]
- [[Herbert Simon]]
- [[Daniel Kahneman]]
- [[Cognitive Psychology]]
- [[Behavioral Economics]]
- [[Cognitive biases]]