But according to research co-written by a University of Illinois agricultural economist, numeric calorie labels might not be the most effective way to influence patrons to select “healthier” (often interpreted as lower-calorie) items.
Brenna Ellison, a professor of agricultural and consumer economics, says placing a symbolic label in addition to the numeric calorie information on a menu is a better way to reach more diners, from the least to the most health-conscious.
“Our research found that if only numeric calorie labels are implemented, the effect on calories ordered will be smaller in magnitude, but less health-conscious patrons are still likely to respond to the information by ordering lower-calorie items, which is good,” she said. “However, if you go one step further and add a symbol – in our case, a traffic light symbol – to the existing calorie information, that extra step benefits even the most health-conscious individuals.”
For the health-conscious, it may provide an extra piece of information that they did not already know.
“The traffic light may function as a normative suggestion as to what is ‘better’ or ‘worse’ for diners to eat,” Ellison said. “Thus, by reducing the number of calories ordered for diners across all levels of health-consciousness, the combination calorie-traffic light label seems to be more effective than the numeric calorie label alone.”
The research, co-written by Jayson L. Lusk and David Davis, both of Oklahoma State University, was conducted in a full-service restaurant where patrons were randomly assigned one of three different types of menus – some with no information about calories; some with the number of calories listed; and some with a symbol (in this case, a traffic light symbol with red, yellow and green lights indicating specific calorie ranges) in addition to the numeric calorie label.
The results show that the number-only calorie labels had the greatest impact on those who were the least health-conscious.
“That’s good news, because this is exactly who the government is trying to reach with this information,” Ellison said. “However, labels of any form – so long as they are relatively easy to understand – are likely to have the largest impact on less health-conscious diners because the information is new to these individuals.”
For the highly health-conscious, adding the traffic light symbol to the existing calorie information further reduced the number of calories ordered.
“Calorie counts did provide the most health-conscious with additional information, but it was the symbol that really enhanced the information provided to these consumers,” she said. “This is most likely because the symbol offered new information to these diners.”
So if the government is looking for a policy that would help the largest possible demographic, adding a symbol to the calorie information might be a more effective way to influence food choices, Ellison says.
“A downside to the Affordable Care Act legislation as currently proposed is that it just provides a number,” she said. “If we’ve learned anything about consumers, it’s that people often operate under time constraints and are very convenience-oriented. Not every restaurant diner has time to read – or even wants to read – the number of calories listed for each menu item. Those decisions are often made quickly. For this reason, a symbol might be especially helpful in communicating with the broadest groups of consumers.”
In 1980, 30 percent of meals were consumed outside of the home. Now it’s about 40 percent, according to the paper. The proportion of food dollars spent outside the home has hovered between 46 and 49 percent since 2000, according to the Economic Research Service.
“Though expenditures outside the home have leveled off in recent years, it’s still a substantial proportion of food dollars spent and calories consumed outside of the home,” Ellison said. “If the labels work and the effect of the label persists to subsequent restaurant visits, even small reductions in the number of calories consumed could add up in the long run in terms of a few pounds in a year.”
But if the labels only result in a one-time calorie reduction, the effect is relatively small. On average, the combination calorie-traffic light label only reduced total calories ordered by about 69 calories, Ellison says.
“An individual could reduce twice as many calories simply by not drinking a soda,” she said.
Ellison notes that the research does have an additional takeaway for consumers: Calorie labels were more likely to influence the selection of the main entrée as opposed to supplemental items such as drinks and desserts.
“While both calorie labels reduced entrée calories ordered, both also actually increased extra calories ordered from additional sides, desserts, drinks, etc., compared to the menu with no nutrition information,” she said. “So there does seem to be what we call a ‘licensing effect,’ which could also potentially be a concern. In other words, people might reward themselves for ordering a low-calorie entrée by adding on a dessert, ultimately negating the entrée calorie reduction. Research has shown people don’t want to be future-oriented. When you’re hungry, you’re hungry now. You’re not thinking of yourself in 20 years.”
Another stumbling block for consumers could be foods that have associated “health halos,” Ellison warns.
“Salads are a common example of a food that experiences the ‘health halo’ effect,” she said. “Consumers expect salads to be healthy because they have many vegetables. They think that no matter what else is added to the salad, it should still be healthy. While this logic is often used, unfortunately, it’s not sound. In actuality, by adding any type of meat or dressing to a full-portion salad, the salad quickly approaches the threshold for red-light foods.”
Ellison says the symbol doesn’t necessarily have to be a traffic light.
“It could very well be something else,” she said. “The traffic light is being used in the U.K. and Australia in a slightly different form, but since it’s being used elsewhere, we wanted to try it here. You could use a star rating system or some other variation, but negative information” – in this case, a red traffic light – “seems to affect people more than positive.”
The study also asked respondents which type of label they preferred.
“It turns out that the traffic light was the least preferred even though it was the most effective,” she said. “The numeric label, however, was the most well liked, which struck us as odd. It seems as though people want the information, but they don’t necessarily want to be told how to apply it. In other words, they want to know how many calories are in foods, but they don’t think it’s our job to tell them whether those foods are good or bad.”
The research was published in the International Journal of Behavioral Nutrition and Physical Activity.
Phil Ciciora | EurekAlert!
Satellites, airport visibility readings shed light on troops' exposure to air pollution
09.12.2016 | Veterans Affairs Research Communications
Oxygen can wake up dormant bacteria for antibiotic attacks
08.12.2016 | Penn State
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
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...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
09.12.2016 | Life Sciences
09.12.2016 | Ecology, The Environment and Conservation
09.12.2016 | Health and Medicine