Discover and read the best of Twitter Threads about #30papers30days
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In this spirit of this being my 30th paper, I summarise a study showing how people prefer round prices.
Do investors prefer round stock prices? Evidence from Israeli IPO auctions by Shmuel Kandel, Oded Sarig and Avi Wohl (2001)
Paper #30 #30papers30days 🥳🎉🎈
Do investors prefer round stock prices? Evidence from Israeli IPO auctions by Shmuel Kandel, Oded Sarig and Avi Wohl (2001)
Paper #30 #30papers30days 🥳🎉🎈
📈 Since 1993, Israel has done stock IPOs differently to most countries. In the US, the price pre-determined on day 1.
In Israel, it's an auction, meaning the price is set by the public. On IPO day, people individually pre-order a desired quantity at a given price. 🪄
In Israel, it's an auction, meaning the price is set by the public. On IPO day, people individually pre-order a desired quantity at a given price. 🪄
🧮 The authors examined every individual order (many thousands) from 27/28 Israeli IPOs in 1993-1994.
In an unbiased world, we would expect to see an equal distribution of prices ending in 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
In an unbiased world, we would expect to see an equal distribution of prices ending in 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
NOISE POLLUTION MEANS WORSE GRADES.
The effects of environmental and classroom noise on the academic attainments of primary school children by Bridget Shield & Julie Dockrell (2007)
Paper #29 #30papers30days 🧵
The effects of environmental and classroom noise on the academic attainments of primary school children by Bridget Shield & Julie Dockrell (2007)
Paper #29 #30papers30days 🧵
Previous research into the effect of noise on children's educational attainment shows it reduces:
🎓 Grades
🧠 Memory
💪 Motivation
📚 Reading ability
Classic sources include road traffic, trains, aircraft, construction AND noisy classmates 💥
🎓 Grades
🧠 Memory
💪 Motivation
📚 Reading ability
Classic sources include road traffic, trains, aircraft, construction AND noisy classmates 💥
🛃 Shockingly, another study found that when a local airport closed, it took several years for the detrimental effects of noise to cease.
🛬 This suggests that noise deeply affects your educational trajectory.
It's like getting a stone in your shoe 20 minutes into a marathon.
🛬 This suggests that noise deeply affects your educational trajectory.
It's like getting a stone in your shoe 20 minutes into a marathon.
Habits die in new environments but a zest for new ones emerges.
Empowering interventions to promote sustainable lifestyles: Testing
the habit discontinuity hypothesis in a field experiment by Bas Verplanken and Deborah Roy
Paper #28 #30papers30days 🧵
Empowering interventions to promote sustainable lifestyles: Testing
the habit discontinuity hypothesis in a field experiment by Bas Verplanken and Deborah Roy
Paper #28 #30papers30days 🧵
As we know, many people *think* about the environment, but fewer take action to safeguard it.
There are many reasons for this: it may make you worse off, better options may not exist where you live.
🌿 This paper explores the role of habit in taking environmental action.
There are many reasons for this: it may make you worse off, better options may not exist where you live.
🌿 This paper explores the role of habit in taking environmental action.
The Habit Discontinuity Hypothesis suggests that when habits are broken, this creates a "window of opportunity for behaviour change"
👩🚀 Starting a new job
📍 Moving home
🚧 Roadworks
The discontinuity forces people to renegotiate new ways of doing things.
👩🚀 Starting a new job
📍 Moving home
🚧 Roadworks
The discontinuity forces people to renegotiate new ways of doing things.
A three ingredient recipe for keeping your human motivated.
Self-Determination Theory and the Facilitation of Intrinsic Motivation, Social Development, and Well-Being.
Paper #5 #30papers30days 👇
Self-Determination Theory and the Facilitation of Intrinsic Motivation, Social Development, and Well-Being.
Paper #5 #30papers30days 👇
Here's how it opens: a joy to read.
"The fullest representations of humanity show people to be curious, vital, and self-motivated. At their best, they are agentic and inspired, striving to learn; extend themselves; master new skills; and apply their talents responsibly."
"The fullest representations of humanity show people to be curious, vital, and self-motivated. At their best, they are agentic and inspired, striving to learn; extend themselves; master new skills; and apply their talents responsibly."
This paper is about our motivation and the conditions required to facilitate it. They identify three ingredients.
• Competence: I believe in my ability to do
• Autonomy: I am *choosing* to do it (even if it's painful)
• Relatedness: I matter to others
• Competence: I believe in my ability to do
• Autonomy: I am *choosing* to do it (even if it's painful)
• Relatedness: I matter to others
Everyone agrees that the ability to understand (and therefore influence) systems is immensely powerful. But what is systems thinking in the first place?
A Definition of Systems Thinking: A Systems Approach by Ross Arnold & John Wade (2015).
Paper #4 #30papers30days 👇
A Definition of Systems Thinking: A Systems Approach by Ross Arnold & John Wade (2015).
Paper #4 #30papers30days 👇
This paper argues that to make Systems Thinking more understandable, a complete definition is required.
The dictionary says "a system is defined as a regularly interacting or interdependent group of items forming a unified whole."
Something more than a collection of its parts.
The dictionary says "a system is defined as a regularly interacting or interdependent group of items forming a unified whole."
Something more than a collection of its parts.
Early on, the authors realise that systems thinking is literally *a system for thinking about systems* 
If you're reading this, you're probably a semi-expert in behavioural economics. Today I read the granddaddy paper of our field: Prospect Theory.
Prospect Theory: An Analysis of Decision under Risk by Daniel Kahneman & Amos Tversky (1979)
Paper #3 #30papers30days 👇
Prospect Theory: An Analysis of Decision under Risk by Daniel Kahneman & Amos Tversky (1979)
Paper #3 #30papers30days 👇
This paper rails against Expected Utility Theory - the idea that we weigh all options up and choose rationally - and ultimately annihilates this idea.
This paper is about certainty. Our desire to pick options that are most certain, even if they are worse.
This paper is about certainty. Our desire to pick options that are most certain, even if they are worse.
Certainty Effect. People overweight outcomes that are considered certain.
You could win some money here. Would you pick A or B?
A: $4000 with an 80% probability
B: $3,000 (100% probability)
80% go for B.
You could win some money here. Would you pick A or B?
A: $4000 with an 80% probability
B: $3,000 (100% probability)
80% go for B.
To spread behaviour and start movements, you should be careful about targeting central hubs.
Complex Contagions and the Weakness of Long Ties by Damon Centola (2007). A summary and light critique.
Paper #1 #30papers30days
Complex Contagions and the Weakness of Long Ties by Damon Centola (2007). A summary and light critique.
Paper #1 #30papers30days
Most behaviour spreads through social contact. Weak ties - people you barely know - easily spread viruses, and information, like a new job opening. They reach deeply into neighbourhoods you would never know. Whereas, strong ties already know all the gossip.
But, weak ties only allow for 'simple contagion'. Only one source is required to give me covid or tell me Team GB's score.
When the behaviour is costly (social cred, etc) or controversial, people may require independent affirmation and reinforcement from multiple sources.
When the behaviour is costly (social cred, etc) or controversial, people may require independent affirmation and reinforcement from multiple sources.
