Systems Thinking for Ranking Food Safety Risk
(the “Davis” model)

Slide 2

Complexities

Need for Systems Thinking

Systems Thinking

“Hot Stove” Mental Model

Some Impacts/Consequences are not easily perceived

Examples of Long Term Consequences

Feedback Loop

Slide 10

Goal, observation, discrepancy, and action create a Goal Seeking substructure.

Slide 12

Slide 13

Slide 14

Slide 15

Slide 16

Slide 17

Slide 18

Epidemics Model

Slide 20

Slide 21

Foods the contribute to Risk

Slide 23

Riskiness of  a Particular Food

Stocks & Flows that contribute to Riskiness

Stocks & Flows that contribute to Riskiness

Stocks & Flows that contribute to Riskiness (Continued)

Decreases to Riskiness

Can Test Hypotheses

Slide 30

Slide 31

Slide 32

Source of Contamination

Purpose of Model

METHODS

Slide 36

Discussion

The Modeling Process

Building a capacity for understanding

Acknowledgement