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Effective Behaviour Change Dr. Sabine Pahl University of Plymouth Overview 1 Human Mind & Climate Change 2 The Role of Energy Behaviour 3 Successful Behaviour Change 4 Evaluating Change 5 Summary Overview 1) Why do people have difficulty grasping the issue of climate change? 1 Human Mind & Climate Change Human Mind Climate Change Simple, local Complex, global 1 Human Mind & Climate Change Source: http://www.actoncopenhagen.decc.gov.uk/content/en/embeds/flash/4-degrees-large-map-final 1 Local and relevant scenarios Increased concern, reported understanding of mitigation responses and belief that actions now will make a change Source: Tatebe, Shaw & Sheppard, 2010 1 Human Mind & Climate Change Human Mind Climate Change Simple, local Complex, global Certain, vivid Uncertain, abstract 1 Human Mind & Climate Change Fossil-fuel emissions GtC/y 30 Emissions to 2000, and IPCC projections to 2100 20 10 0 1850 High (SRES A1FI) Medium-High (A2) Medium-Low (B2) Low (SRES B1) 1900 1950 2000 2050 2100 Source: Met Office, CDIAC and Intergovernmental Panel on Climate Change (IPCC) 1 Personal and vivid scenarios Young woman “from the future” talks about her experiences Perspective taking increased environmental engagement (brochures taken, time spent, pro-environmental intentions) Source: Pahl & Bauer, in revision 1 Human Mind & Climate Change Human Mind Climate Change Simple, local Complex, global Certain, vivid Uncertain, abstract Immediate, linear Delayed, nonlinear 1 Human Mind & Climate Change CO2 concentration 1769 = Watt invented the steam engine Source: MacKay, 2008 1 Make Carbon tangible and immediate Link to carbon visualisation The carbon dioxide emitted by Stoke Newington School every year could fill Clissold Park to a depth of 159 cm Source: http://carbonquilt.org/gallery/images 1 Human Mind and Climate Change Be aware of human mind limitations Help people overcome limitations -> “as if” here and now Homo sapiens neandertalensis Homo habilis 2 Homo erectus 1.5 1 Homo sapiens .5 .2 .1 Homo sapiens sapiens Today Millions of years 200 years CO2 ppm Source: MacKay, 2008 Overview 2) How important is the human dimension in energy use? 2 Energy Behaviour Two aspects: Built Form and Occupants England has one of the oldest housing stocks in Europe Improvements have been made Cavity wall insulation from 22% to 48% (1996-2008) Good loft insulation from 25% to 38% (2003-2008) Source: English Housing Survey, 2010 Further potential With all potential measures: SAP rating increase by 11.5 points; annual fuel costs reduced by £147; CO2 emissions reduction by 26%. Source: English Housing Survey, 2010 US estimate: Behaviour change can reduce US carbon emissions by 20% in the next ten years Source: Dietz et al., 2009 2 Energy Behaviour Two aspects: Built Form and Occupants Demographics “Brown” appliances use more energy according to DECADE project than lighting, refrigeration, cooking and wet appliances -> need to know what behaviours to target; which underlying motivations to address 2 Energy Behaviour Behaviour can also be problematic e.g., cheaper comfort, misuse of technology Adding heating controls and smart meters may not automatically reduce energy use (Shipworth et al., 2010; Darby, 2010) “poor treatment of the human dimension to the energy demand problem” (Lomas, 2010) Where to start? Target high users (Firth et al., 2008; Summerfield et al., 2010); start with the highest impact/easiest to change behaviours (Dahlbom, 2009) Overview 3) Let’s look at some examples of changing energy behaviour Change in consumption / day (kWh) 3 Use social norms Schultz et al., 2007 3 Making the invisible visible PhD project (Julie Goodhew) on the use of thermal images to prompt householders to save energy. Study 1: Climate Action Group in small Devon town (N = 42) Study 2: Homebase customers who had never purchased a ‘green’ product (N = 100) 3 Making the invisible visible 3 Making the invisible visible Study 1: Carbon Footprint from Energy Usage in the Home (KgCo2) 3 Making the invisible visible Study 2: Every household received a raft of interventions: - information / advice - energy audit - beyond energy: waste, food etc. - £500 to spend Two groups The only difference between the two groups was that the thermal imaging groups received an additional thermal report 3 Making the invisible visible Study 2: draught proofing (%) 30 20 10 0 Thermal Image No Thermal Image Overview 4) How can we tell if an intervention has worked? 4 Evaluating Change Context: Political, Financial and Time Pressure Dahlbom et al., 2009: 41 European case studies “a lot of programmes lack a proper planning and evaluation model” “goals and objectives not specific enough” “few programmes based on a good prior analysis of the situation” “little transfer of learning between projects” 4 Evaluating Change Is it working? Process evaluation Did it work? Which aspects? Outcome evaluation Set specific target outcomes e.g., number of contacts made; perceived ease of implementation; energy saved Identify target groups segmentation – important but don’t over-segment; if you have something that works for everyone, use it? Compared to what? Ideally – a very similar group who hasn’t had an intervention (yet); “control group” Why? 4 Evaluating Change 5200 5200 5000 5000 4800 4800 4600 Audit 4600 Thermal image Audit 4400 Control 4400 Control Thermal image 4200 4200 4000 4000 Before Before After 1 year 5200 5200 5000 5000 4800 4800 4600 Thermal image Audit 4400 Control 4400 4600 4200 4200 4000 4000 Before After 1 year After 1 year It worked Thermal image Audit Control Before After 1 year 4 Evaluating Change Evaluation is crucial Evaluation doesn’t have to be expensive Be clear & realistic on what you want to know Be strategic about evaluating change (alternative evaluation plans?) Integrate planning for this at the start -> Budget time & funds for this (management, analysis, reports) Can be disseminated back to users in GM Others councils / LCEAs might follow your good practice 5 Summary Climate change is difficult to get to grips with because it’s characterised by uncertainty, complexity, distance and delay Use local, vivid, relevant messages in communications Human behaviour is key to reducing energy demand Behaviour change works but requires good planning and careful evaluation Acknowledgements Julie Goodhew Tim Auburn Mathew White Jackie Andrade Steve Goodhew Psychology & Sustainability Group Thank you for listening Contact: [email protected]