An individual's satisfaction is affected by both their own monetary payoff and the payoff of another person. At their current position, which of the following trade-offs would indicate the greatest degree of altruism?

Interpreting Altruistic Preferences from Choices

Consider a graph where an individual's own monetary payoff is on the vertical axis and another person's payoff is on the horizontal axis. For a purely selfish individual, who only cares about their own payoff and is indifferent to the other's, their indifference curves would be horizontal lines.

Explaining the Shape of Altruistic Indifference Curves

On a graph where your payoff is on the vertical axis and another person's payoff is on the horizontal axis, match each type of indifference curve with the preference it represents.

Consider a scenario where an individual's own monetary payoff is represented on the vertical axis and another person's payoff is on the horizontal axis. We are comparing two individuals, Sam and Pat. At any given allocation of payoffs, Sam's indifference curve has a steeper downward slope than Pat's indifference curve. Based on this information, what can be concluded about their preferences?

Evaluating an Extreme Preference Model

An individual's altruistic preferences are represented on a graph where their own payoff is on the vertical axis and another person's payoff is on the horizontal axis. The slope of the indifference curve at their current allocation is -0.75. To remain on the same indifference curve (i.e., maintain the same level of satisfaction), how much of their own payoff must they sacrifice if the other person's payoff increases by $4? (Provide a numerical answer only, without the dollar sign).

Evaluating a Trade-off Based on Altruistic Preferences

An individual's preferences are altruistic, meaning their satisfaction increases when their own monetary payoff increases and also when another person's payoff increases. Given this, arrange the following four possible allocations of money, presented as (Payoff for Self, Payoff for Other), from the one that provides the individual with the MOST satisfaction to the one that provides the LEAST satisfaction.

Quantifying Zoë's Limited Altruism