Lecture 3: Environmental Risk Perception Flashcards
What is the timeline of environmental risk perception?
1982: Beginning of risk perception studies
Early 2000s: study on risk perception found 5 risk cases - climate change, mobile phones, radioactive waste, GM food, genetic testing
2000s to present: Climate change risk begins to become prominent
2011 study: argues the need to consider risk perception of climate change
What is the definition of a hazard?
Anything that could lead to harm
What is the definition of a risk?
Probability X Severity
Probability of it happening
Severity of the event
High probability + High Severity = High Risk
What is risk assessment?
a systematic process of evaluating the potential risks that may be involved in a projected activity or undertaking
-more numerical/objective
-expert assessment (formalised)
-used in risk management
What is risk perception?
the subjective judgement that people make about the characteristics and severity of a risk
-subjective
-more qualitative
-‘ordinary’ people but also experts
-understanding risk relevant behaviour and shaping communication
What did Slovic (2000) find about experts vs non-experts on terms of risk assessment?
Looked at range of 30 risk issues, asked both experts & non-experts in risk assessment to rank them
University students put nuclear power at the top of their list but experts but this low down
Experts: Gage risk more correctly
Why are we interested in risk perception?
To improve communication and directing educational efforts if the focus is on lay publics bias’s and misperceptions
Informing risk management strategies - if focus on validity of lay public, as well as expert, perspectives
Predict & understand public responses e.g., GM food, vaccines, climate change
Tversky & Kahneman (1974) cognitive psychology perspective
Argue that humans are not rational decision makers
There are systematic biases which influence our processing 7 judgement
What is a representativeness heuristic?
occurs when we estimate the probability of an event based on how similar it is to a known situation
In other words, we compare it to a situation, prototype, or stereotype we already have experience
What is an availability heurstic?
Estimate frequency or probability based on how easy it is to think of something (Tversky & Kahneman, 1974)
How our thinking or judgements are made based on how salient the info is to us
What did Demski et al., 2016 find?
Looked at how important it is that the info is available to us
Surveyed ppl directly affected by flooding (damage to property)
Also surveyed from national sample
Wanted to gage ppl’s views of risk of climate change
Ppl who had experienced flooding were more likely to refer spontaneously to climate change as a result
If you been affected you’re more likely to bring that to mind
What is a framing effect?
A decision outcome can be influenced by
- The background context of the choice
-The way in which the question is worded/framed
-Ppl are risk adverse; would rather have a certain outcome
The framing effect in terms of climate change (Spence & Pidgeon, 2010)
The same climate information framed in gain or loss outcomes; distant or near effects
Info can be changed based on gain or loss framing
Gain framing: Course of action = gain something
Loss framing: lose something
Results: people were more concerned about climate change when it was framed as a local issue rather than a global or distant problem b/c it’s more relevant to them
People tend to respond more favorably to messages emphasizing the potential gains rather than losses associated with climate change
What did Graham & Abrahamse, 2017 find about how the level of concern about climate impacts of meat consumption
Interested how framing meat consumption impacts peoples views by giving them information about impact
In experimental group, increased ppl’s concerns about emissions as a result of climate change vs. Control
An informational message about the climate impacts of meat consumption was associated with stronger intentions to reduce meat consumption, particularly for people with strong self-transcendence values
What is an affect heuristic?
Using underlying feelings to form perceptions of risk & benefit: “If a person’s feelings toward an activity are favorable, they are moved toward judging the risks as low and benefits as high (Slovic et al., 2004)
What did the Leiserowtiz, 2006 study find?
Affect predicts global warming risk perception more strongly that other variables
Ppts asked how +ve or -ve they felt towards climate change (-5 to +5): holistic effect
Participants asked for image associations, affect rating of these measured; image affect
Affect was the strongest predictor of risk perceptions