Research paper
Almiron-Roig E, Solis-Trapala I, Dodd J, Jebb SA. Estimating food portions. Influence of unit number, meal type and energy density. Appetite. 2013 Dec;71:95-103. doi:10.1016/j.appet.2013.07.012. PMID: 23932948. PMCID: PMC3857597.
Why we cite it
Quantifies how badly people misjudge portion sizes — with underestimation of 30-46% for common foods like beverages, pasta, and pizza. Demonstrates that portion distortion is a key mechanism of calorie underreporting alongside selective memory, supporting the project’s work on why self-reported intake is systematically inaccurate.
DOI: 10.1016/j.appet.2013.07.012 · PubMed 23932948 · Publisher