Recent years have seen increasing efforts to encourage people to do more for their health and for the environment, for example by recycling more, using cars less and taking more exercise. But what messages have been successful, and why?
Theories have long suggested that by changing attitude, social rules and people's own ability to reach their goals, people’s intentions or decisions to act in a particular fashion will be changed, which in turn determines the extent of change in behaviour. But the supporting evidence for these widely accepted ideas was weak; there was a need to take a closer look at experiments that changed attitudes, norms and self-efficacy in order to measure the true extent of any changes in subsequent intentions and behaviour.
The research project, ‘Does changing attitudes, norms or self-efficacy change intentions and behaviour?’, led by Professor Paschal Sheeran of Sheffield University, provides the crucial missing evidence about the role of these three factors in behaviour change by reviewing all the successful experiments in the past 25 years and quantifying their effects on decisions and actions.
The team identified 33 distinct strategies for changing intentions and behaviour across the 129 different studies. The most frequently used strategies provided general information, details of consequences and opportunities for comparison. Yet the most effective strategies were to prompt practice, set specific goals, generate self-talk, agree a behavioural contract and prompt review of behavioural goals. The two least effective strategies involved arousing fear and causing people to regret if they acted in a particular fashion.
They also examined whether the characteristics of a particular study influenced how well changes in attitude, social norm and self-efficacy influenced intentions and behaviour. There was little evidence that the way factors were measured influenced the findings, though studies that used students or had short follow-up had stronger effect on intentions.
The team’s findings show that changing attitude, social norms and behaviour succeeds in making a statistically noticeable difference in people’s intentions and behaviour about 60 per cent of the time. The team found the amount of change in intentions and behaviour to be ‘meaningful’ and of ‘medium’ size according to standard procedures for describing effect sizes.
Annika Howard | alfa
Geographers provide new insight into commuter megaregions of the US
01.12.2016 | Dartmouth College
Sustainable Development Goals lead to lower population growth
30.11.2016 | International Institute for Applied Systems Analysis (IIASA)
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy