manual for social impact assessment of land-based ... - Forest Trends
manual for social impact assessment of land-based ... - Forest Trends
manual for social impact assessment of land-based ... - Forest Trends
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Scoring and ‘tally’ methods to show attribution<br />
The main approach to attribution in PIA is to separate out the project and non-project factors as<br />
determinants <strong>of</strong> outcomes, rather than to use the matching methods (using controls) approach. This<br />
involves firstly developing a ‘causal diagram’ showing all the potential project and non-project<br />
factors contributing to a given <strong>impact</strong>. These are then ranked or scored. If all the factors are scored<br />
using proportional piling (100 counters is best <strong>for</strong> calculating percentages), the project (or nonproject)<br />
factors can be aggregated into a statement such as:<br />
“the project-related factors contributed X% to a project outcome/<strong>impact</strong>”<br />
For example, Table T13 shows the scoring <strong>for</strong> six project and non-project factors contributing to a<br />
positive change in food security status following an agricultural recovery project in a post-conflict<br />
setting. It was concluded that the project-related factors made a 29% relative contribution to<br />
improved food security.<br />
Table T13: Attribution by Ranking and Scoring <strong>for</strong> a Food Security Project<br />
Factor Project or Non-Project Factor Rank Score<br />
Improved rainfall Non-project 1 33<br />
Improved security Non-project 2 26<br />
Improved seeds Project 3 19<br />
Government extension service Non-project 4 12<br />
Provision <strong>of</strong> fertilizers Project 5 8<br />
Provision <strong>of</strong> tools Project 6 2<br />
Source: Catley, A., Burns, J., Abebe, D. and Suji, O. (2008). Participatory Impact Assessment: A guide <strong>for</strong><br />
practitioners. Feinstein International Center, Med<strong>for</strong>d.<br />
Another approach is to ask individuals to list all the factors they think have contributed to a<br />
particular outcome or <strong>impact</strong>. When everyone has been asked, the number <strong>of</strong> times each potential<br />
cause was mentioned is added up. This is known as the ‘tally method’. Table T14 presents an<br />
example <strong>of</strong> the tally method <strong>based</strong> on the responses (74) to an open-ended question: what has<br />
contributed to improved food security following the drought in Niger? (this followed a ‘be<strong>for</strong>e and<br />
after project’ scoring exercise on food sources).<br />
Table T14: Reasons <strong>for</strong> Improved Household Food Security in Niger<br />
Factors Project or non-project factor No. <strong>of</strong> responses (n = 74)<br />
Cereal Banks Project 68<br />
Better farm inputs Project 59<br />
More income to buy food Project 50<br />
Livestock restocking Project 46<br />
Vegetable production Project 38<br />
Food Aid Non-project 10<br />
Decrease in crop pests and diseases Non-project 8<br />
Improved rainfall Non-project 5<br />
Source: Reproduced with permission from Catley, A., Burns, J., Abebe, D. and Suji, O. (2008). Participatory<br />
Impact Assessment: A guide <strong>for</strong> practitioners. Feinstein International Center, Med<strong>for</strong>d<br />
Social Impact Assessment <strong>of</strong> Land-Based Carbon Projects (1.0) – Part II | 55