Consumers browsing grocery aisles may be unconsciously influenced by the phonetic sounds of snack brand names when deciding how filling a food will be. A new psychological study reveals that the mere sound of a product's name creates immediate physical expectations about the food's weight and density. Researchers found that when participants were asked to choose between fictional granola bars named Gobo and Kipi, the vast majority expected the former to be significantly more filling.
To test this phonetic phenomenon, researchers evaluated over 600 participants using fictional brand names assigned to various snack items. Words like Norgo and Boge were consistently rated as heavier and more filling than snacks with names like Iskee or Tikee. The study controlled for variables such as name length, pronounceability, and general likability, proving that the phonetic structure itself was the driving factor.
This phenomenon is rooted in a nearly century-old psychological concept known as the mil/mal effect. Proposed by German psychologist Wolfgang Köhler in 1929, it is the lesser-known sibling of the famous bouba/kiki effect, which links specific sounds to round or spiky shapes. The mil/mal effect demonstrates a human tendency to associate sounds like "ee" or "t" with smaller sizes, while sounds like "oh" or "b" are linked to larger, heavier objects.
Interestingly, the nutritional profile of the food did not alter the psychological impact of the name. Whether the fictional brand was applied to a healthy option like oatmeal or an unhealthy choice like potato chips, the phonetic bias remained identical. However, a consumer's willingness to actually purchase the product depended entirely on their immediate dietary goals, such as whether they were actively seeking a heavy meal or a light snack.
The Marketing Power of Phonetics
This research exposes a critical, often overlooked layer of consumer behavior that directly impacts product marketing and brand strategy. While companies spend millions optimizing packaging colors and glossiness to convey health or indulgence, the phonetic architecture of the brand name itself is doing heavy subconscious lifting. If a brand launches a new diet cracker with a heavy-sounding name like Blorogo, it actively fights the consumer's psychological expectations, creating unnecessary friction at the point of sale.
This phonetic mapping perfectly explains the enduring success of legacy snack brands. Products designed to feel light and crispy, such as Twix or Triscuits, rely heavily on the "t" and "ee" sounds that signal smallness and lean eating. Conversely, snacks meant to convey dense, satisfying indulgence, like Rolo or Doritos, lean into the "oh" sounds that trigger expectations of weight and fullness.
The next frontier for this research is determining whether these phonetic expectations can actually alter physical satiety after consumption. If a heavy-sounding name tricks the brain into expecting a filling experience, it may genuinely influence how full a person feels after eating. For the food industry, mastering this phonetic psychology could be the difference between a product that satisfies and one that leaves consumers looking for another snack.
