Crows Have Been Observed to Raise the Water Level in a Tube

question 2

Multiple Choice

Crows have been observed to raise the water level in a tube by dropping stones into the tube,so that they can then nab a floating worm.It has been suggested that this feat is a display of

• A) the availability heuristic.
• B) belief perseverance.
• C) the framing effect.
• D) insight.

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Definitions:

Drawee

In financial transactions, the party on whom a check or draft is drawn and who is responsible for paying the specified amount.

Obligated

Being legally or morally bound to do something or to fulfill a contract or promise.

Drawer

The person who issues or writes a negotiable instrument, such as a check, directing the payment of the specified amount of money.

Demand Instrument

A financial instrument that is payable immediately upon demand, such as a check or certain promissory notes.