4 - Social Interactions Flashcards

(36 cards)

1
Q

What is a social dilemma?

A

Individuals independently pursuing their own private objectives that result in a socially suboptimal outcome.

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2
Q

What is the ‘tragedy of the commons’?

A

Resources not owned by anyone (Earth’s resources, fish stocks etc.) are easily overexploited unless access is controlled.

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3
Q

What was the initial solution for social dilemmas?

A
  • Altruism
  • Government intervention (preventing landfill by adding a landfill tax UK)
  • Community behaviour regulation (social norms)
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4
Q

What is a strategic interaction?

A

When people interact, and they are aware of how their actions affect others.

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5
Q

What is a strategy?

A

An action that a person may take when the person is aware of other possible actions.

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6
Q

What is a game?

A

A model of strategic interaction.

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7
Q

What is game theory?

A

A set of models of strategic interactions.

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8
Q

What is a dominant strategy?

A

Action that yields the highest payoff regardless of the actions of other players.

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9
Q

What is a dominant strategy equilibrium game?

A

Outcome where all players play their dominant strategy.

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10
Q

What does a dominant strategy equilibrium game lead to?

A

An outcome that is:
* the best possible for each player
* socially optimal

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11
Q

What is the prisoner’s dilemma?

A

A game in which dominant strategies result in a socially suboptimal result.

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12
Q

What are the aspects of an interaction that cause an unfortunate outcome in the prisoners’ dilemma game?

A
  • Costs on the other agent not considered (i.e. not internalised)
  • No way to get legal reconciliation
  • Inability to make agreements beforehand
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13
Q

What is a social preference?

A

Value placed on what happens to other people, even if it results in lower payoffs for the individual.

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14
Q

What is a zero-sum game?

A

The sum of payoffs sum to 0.

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15
Q

What shape does an IC curve have for an altruistic individual?

A

Downward sloping

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16
Q

What shape does an IC curve have for a self-interested individual?

17
Q

Draw the diagram of a self-interested individual and an altruistic individual where they choose a payoff between themselves and another in a zero-sum game.

18
Q

How do you account for costs on the other agent not considered (i.e. not internalised)?

A

If an individual is somewhat altruistic.

19
Q

How do you account for no way to get legal reconciliation?

A

Accounting for repeated games.

20
Q

How does accounting for repeated games solve the problem of no reconciliation?

A

By being able to target free riders over repeated games, even self interested individuals will look to be “altruistic”.

21
Q

Why do contributions to public goods fall over time?

Without the opportunity for peer punishment.

A

Disappointment of the expectation of reciprocity.

22
Q

How can contributions to public goods be sustained in the long-run?

A

The opportunity for peer punishment.

23
Q

Why can peer punishment backfire?

A

It adjusts the frame that an individual has.

Frame shifts from moral obligation to economic incentive.

If this occurs, it can be said that incentives have crowded out social preferences.

24
Q

How can individuals acting independently result in a cooperative outcome?

A
  • Invisible hand
  • Repeated prisoners’ dilemma
  • Public goods game
25
What is the ultimatum game?
Two person, one-shot sequential game.
26
Why is the proposer unlikely to offer £0.01 in the ultimatum game?
Violation of social norms will most likely cause the responder to reject.
27
What is the minimal acceptable offer in the ultimatum game?
y < 50R/(1+R) ## Footnote y = gain from accepting the offer, R = private reciprocity motive
28
What should a self-interested responder do in the ultimatum game?
Accept, no matter what.
29
What is the equation for a proposer who cares only about his own payoffs in the ultimatum game?
E(P) = PR ## Footnote E(P) = Expected payoff, P = payoff if offer accepted, R = probability of acceptance.
30
What happens if there is competition in the ultimatum game?
The amount offered by the proposer falls, as the responder cannot be sure that the proposer will be punished for an unfair offer.
31
What is a Nash equilibrium?
Given the other players' choices, the best outcome an individual can achieve.
32
What is the difference between Nash equilibrium and a dominant strategy equilibrium?
Dominant strategy - best choice regardless of other agents' actions. Nash equilibrium - best choice given other agents' actions.
33
What happens if there is more than one Nash equilibrium?
There is no incentive to change (as the other person will not) so you may get stuck at the lower Nash equilibrium.
34
Where does a conflict of interest occur?
If two individuals prefer different Nash equilibria.
35
What is the outcome of this game?
Two Nash equilibria at J,J and C,C.
36
How can you resolve conflicts of interest?