Recall That the Introduction to Chapter 11 (Prosocial Behavior) Began

question 30

Multiple Choice

Recall that the introduction to Chapter 11 (Prosocial Behavior) began with a description of several of the citizen-heroes of September 11, 2001-for example William Wik, who refused to flee to personal safety because there were still people to be rescued. He died when a tower collapsed. Wik was willing to sacrifice his own life to save others, and his behavior could thus best be described as __________.

• A) altruistic
• B) communal
• C) evolutionarily adaptive
• D) an example of kin selection

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Definitions:

Equal Payments

Regular and identical payments made over a specified period, often found in loan agreements or installment plans.

Present Value

The current value of a future amount of money or stream of cash flows given a specified rate of return.

Ordinary Annuity

A series of equal payments made at regular intervals, such as monthly or annually, over a specified period.

Annuity Due

An annuity payment arrangement where payments are made at the beginning of each period, as opposed to the end, which is the case with an ordinary annuity.