Plain-language explanation.
Decision-making is one of the most important skills in business. Research shows that people often make irrational decisions — we use mental shortcuts (heuristics) that can lead to systematic errors (biases). Understanding these patterns helps managers make better decisions and design better decision processes.
Core concepts and standard treatment.
Rational decision-making models (expected utility theory, bounded rationality — Simon: satisficing, not maximising) contrast with descriptive models of actual decision behaviour. The heuristics and biases programme (Kahneman and Tversky) documented cognitive biases: anchoring, availability heuristic, representativeness heuristic, confirmation bias, and overconfidence. Prospect theory models decision-making under uncertainty: loss aversion (losses loom larger than gains), framing effects, and probability weighting.
Deeper theory, debates and edge cases.
Organisational decision-making is complicated by: political dynamics (power and interests shaping apparent rational processes), group dynamics (groupthink, collective intelligence conditions — diversity, independence, decentralisation, aggregation), and time pressure (recognition-primed decision-making in expert practitioners). Decision analysis tools (decision trees, influence diagrams, multi-criteria decision analysis) provide structured approaches to complex decisions with uncertainty.
How it is applied in practice.
Decision architecture (nudge theory, Thaler and Sunstein) designs choice environments to guide better decisions without restricting freedom: default options (opt-out organ donation), simplified choices, timely feedback, and social norm information. Algorithmic decision-making in hiring, lending, and criminal justice raises fairness concerns — disparate impact across demographic groups and lack of explainability. Decision quality assessment distinguishes decision quality (process) from outcome quality (result) — professional decision-making should be evaluated on process, not just outcomes.