Methods for Measuring Non

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Economics 101:

How to Measure Indirect Values

Benjamin S. Rashford

Agricultural and Applied Economics

University of Wyoming

What is Value?

The economic concept of value determined by peoples willingness to make tradeoffs…

$

Marginal Cost

Consumer

Surplus

P*

Producer

Surplus

Willingness to Pay

Quantity

Defining Non-market Values

Use Value:

Values associated with the tangible use of non-market goods and services (e.g. recreation, health benefits of clean air…)

Defining Non-market Values

Nonuse (“passive”) Value:

Intrinsic values that are independent of use

• Existence (“preservation”) Value

• Bequest Value

• Altruistic Value

• Option Value

Methods for Measuring Non-Market Values

Indirect Methods (revealed preference)

Examine the market decisions people make regarding activities that are linked to nonmarket goods and services

Direct Methods (stated preference)

Elicit values directly from people using survey methods

Methods for Measuring Non-Market Values:

Indirect Methods

Hedonic Pricing Method

• people value the characteristics of goods air quality

People are willing to pay more for houses in areas with higher environmental quality

Methods for Measuring Non-Market Values:

Indirect Methods

Hedonic Pricing Method (applied to wages)

Income ($CN in 2000)

$33-$17k

$17-$22k

$27-$54k

$3-$13k

$27-$54k

People may be willing to accept lower wages in areas with abundant ecosystem services

Methods for Measuring Non-Market Values:

Indirect Methods

Hedonic Pricing Method

Application to forage land:

• Scenic amenities

Environmental quality (wildlife habitat, water,…)

• Access to recreation

Methods for Measuring Non-Market Values:

Indirect Methods

Hedonic Pricing Method

Advantages:

• Publicly available data

• Low cost

Disadvantages:

• Large data sets

• Sophisticated statistical models

Methods for Measuring Non-Market Values:

Indirect Methods

Travel Cost Method

• Measures the value of resources associated with recreation

Methods for Measuring Non-Market Values:

Indirect Methods

Travel Cost Method

1.

Ask visitors about their travel cost and number of trips

Estimated demand

2.

Estimate recreation demand

 consumer surplus trips

Value of recreation

Methods for Measuring Non-Market Values:

Indirect Methods

Travel Cost Method

3.

Estimate demand for alternative site with higher quality resources

4.

Non-market value = the additional surplus

Demand with high quality

Non-market Value

Demand with low quality trips

Methods for Measuring Non-Market Values:

Indirect Methods

Travel Cost Method

Advantages:

• Can be very specific (value or site)

Disadvantages:

• Primary data collection ($ and time consuming)

• Sophisticated statistical models

Methods for Measuring Non-Market Values:

Direct Methods

Contingent Valuation Conjoint Analysis

WTP for a change in quality

“Waterfowl habitat in ABC Census Division is currently highly degraded due to intensive row crop production. Waterfowl habitat could be enhanced by converting cropland to forage production. If 20% of the land were converted, waterfowl populations would increase by 1%.

Would you be willing to pay an additional $10 per year in property taxes if the money was used to convert cropland to forage for the purpose of improving waterfowl habitat?

Elicit values by directly asking people to state their willingness to pay for a non-market good

Methods for Measuring Non-Market Values:

Direct Methods

Contingent Valuation Conjoint Analysis

Hunting trip A

1. Water level is below the vegetation line

2. You see 2 ducks per hour

3. Entrance fee = $5

Select between alternative sets of characteristics

Hunting trip B

1. Water level is above the vegetation line

2. You see 6 ducks per hour

3. Entrance fee = $11

Elicit values by directly asking people to state their willingness to pay for a non-market good

Methods for Measuring Non-Market Values:

Direct Methods

Contingent Valuation and Conjoint Analysis

Advantages:

• Can measure non-use values

• No secondary data required

Disadvantages:

• Survey design

• Survey cost and time

• Stated vs. revealed preference

Methods for Measuring Non-Market Values:

Benefits Transfer

Uses the values estimated from existing studies

Value of waterfowl hunting

Study Region Time Frame Consumer Surplus/Trip

Cooper

Hammack &

Brown

California

Pacific

Flyway

1989

1972

$11.39 – $32.26

$36 - $103.03

Van Kooten Alberta 1993 $23.65

Methods for Measuring Non-Market Values:

Benefits Transfer

Challenges:

• Past studies must exist

• Activities, locations and populations must correspond

Methods for Measuring Non-Market Values:

Conclusions :

• Valuing non-market goods is hard

• Detailed studies can be expensive and time consuming

• Benefits transfer (if possible) can provide a policy relevant estimate for less time and money

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