1. Towards a systematic treatment of value-ladeness in IA modelling
Penny Kloprogge

2. Contents Choices in modelling Value-ladeness
Introduction
Consequences of choices
Making choices
Value-ladeness
Steps in the Value-ladeness project
Research agenda MUST

3. Some choices in the modelling process
Which
data sets?
What
input variables?
outcome variables?
underlying theory?
assumptions to make?
What parameter values to
choose?
What
policy measures to include?
How deal with
uncertainties?
Which
aggregation level?
scenarios to run?
How link
interdisciplinary modules?
How set
problem boundaries?
Which
modelling method?
How set up
equations?
What
causal relationships?
Treat variables
endogenous or exogenous?

4. Consequences of choices
Certain knowledge and perspectives are incorporated in the model -> value-ladeness
The model and the outcomes may depend significantly on choices made
Different outcomes may lead to different understandings and policy advise

5. Making choices (1) Choices influenced by: objectives; restrictions;
common practice;
choices/wishes of others;
values of the person making the choice
Interpretation
Preferences
Moral convictions
Influenced by
Culture, training, experience,
perspective on risk, etc

6. Making choices (2)
Not just the choice making itself matters, but also:
Determining that an issue requires choices to be made
Making an inventory of options
Evaluating the choice
There is a choice process,
containing several steps

7. Value-ladeness System characteristics
-> determines room for value-ladeness
Societal relevance of the issue
-> influences importance value-ladeness

8. Steps in the Value-ladeness project (1)
Making an inventory of types and sources of value-ladeness
Mapping which types and sources are currently dealt with in practice
using uncertainty strategies, through stakeholder involvement, through peer review, good practice guidelines

9. Steps in the Value-ladeness project (2)
Developing recommendations for a more systematic and more comprehensive treatment of value-ladeness
recommendations with regard to application of methods
checklist that can be used by modellers that
helps create awareness on value-ladeness of choices
helps communicate value-laden issues
helps incorporate plurality

10. Research agenda MUST Testing checklist-instrument
Dissemination conceptual framework and checklist-instrument
Research into cultural and institutional changes required for transparent treatment of value-ladeness
Value-ladeness in the utilisation of model based knowledge in policy processes

11. IA modelling and the policy process