An evaluation of portion size estimation aids: Consumer perspectives on their effectiveness

Area of Science:

• Nutrition Science
• Consumer Behavior Research
• Public Health Interventions

Background:

• Accurate portion size estimation is crucial for managing dietary intake and promoting healthy eating habits.
• Portion size estimation aids (PSEA) offer a potential tool to assist consumers in controlling food portions.
• Understanding consumer perceptions of PSEA is essential for developing effective public health strategies.

Purpose of the Study:

• To investigate consumer opinions on the utility of portion size estimation aids (PSEA).
• To determine consumer preferences for PSEA formats and contexts of use.
• To ascertain the necessary level of detail for effective PSEA guidance.

Main Methods:

• Qualitative study employing six focus groups with 32 participants (18-64 years old) from diverse socio-economic backgrounds in Ireland.
• Discussions were audio-recorded, transcribed verbatim, and analyzed by two independent researchers using a template approach.
• Focus groups were conducted in various community settings, homes, and a university meeting room.

Main Results:

• Consumers found visual PSEA, such as colored portion pots and disposable cups, useful for estimating amorphous foods like breakfast cereals.
• A preference emerged for "visual" aids (reference objects, household measures, food packaging) over quantitative measures (grams/ounces).
• Participants desired concise, consistent, and innovative PSEA education from reputable sources, starting at school age, with personalized guidance (gender, age, activity level).

Conclusions:

• Consumer acceptance of "visual" PSEA, like portion pots and cups, was identified for estimating appropriate portions of amorphous grain foods.
• Effective PSEA should be accompanied by concise, reputable information tailored to individual characteristics such as gender, age, and activity level.