You Don't Receive a Smile or a "Thank You" Each

question 109

Multiple Choice

You don't receive a smile or a "thank you" each time you hold a door for the person behind you, just most of the time. Door-holding is reinforced on a(n) ___________ schedule.

• A) continuous
• B) partial
• C) fixed
• D) periodic

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Definitions:

Pollution

The presence in or introduction into the environment of substances or things that have harmful or poisonous effects.

Marginal Social Benefit

The supplementary gain for the general population derived from the consumption of one more unit of a good or service.

Marginal Social Cost

The comprehensive expense to society for creating another unit of a product or service, encompassing both individual costs and any external factors.

Pollution

The occurrence or release of harmful or toxic materials into the environment.