Amos Tversky

Awareness can travel

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In psychology, a heuristic is a mental shortcut that allows people to make decisions quickly and efficiently. It is the way you feel (your affect) toward a particular stimulus that influences the decisions you make. No one likes to be outwitted or to be tricked, I wrote a little about “affect heuristics” on Tuesday because advertisers are perpetually after our attention and politicians after our votes, both of them employing as much inducement and enticement as they can muster. With heuristics, the brain can make faster and more efficient decisions, albeit at the cost of accuracy. Do people in your organisation exhibit curious, predictable biases?

In 1974, behavioural economics researchers Amos Tversky and Daniel Kahneman identified a specific mental process used to simplify decision-making. They showed that humans rely on a limited set of heuristics when making decisions with information about which they are uncertain. The three key heuristics are as follows: 

1. Representativeness - allows people to judge the likelihood that an object belongs in a general category or class based on how similar the object is to members of that category.

2. Anchoring - allows people to estimate a number by starting at an initial value (the “anchor”) and adjusting that value up or down. 

3. Adjustment and availability - allows people to assess how often an event occurs or how likely it will occur, based on how easily that event can be brought to mind.


Prospect theory

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The Prospect Theory was developed by Daniel Kahneman and Amos Tversky in 1979. It’s a behavioural model (psychology theory) that describes how people make decisions when presented with alternatives that involve risk, probability and uncertainty. See video below for a one minute explanation.

People usually make decisions based on a perfectly rational evaluation of the potential gains and losses that are associated with that decision. The pain of losing something is stronger than the pleasure of gaining something. Our risk tolerance are different based on the decisions we face. When we are speaking about possible gains we tend to be risk averse, in other words, we will choose options that provide lower expected returns and more certainty. Whereas when the decision is about potential losses we tend to be risk seeking. Which means we will accept the lower than expected value as long as we feel we have some potential to avoid losses.