Best-before date mass experiment

TL;DRAbstract

The fourth Friday in September is Researchers’ Night, instituted by the European Commission. In autumn 2011 a mass experiment focusing on refrigeration temperatures was organized through 72 Swedish schools. 
\nRationale and Objectives
\nA correct temperature might increase the best-before durability of food, which is positive in an environmental perspective. The objective was to investigate the food storage temperature in Swedish refrigerators and to use best-before-date labeling to determine whether school children considered the food items edible. The experiment was performed by 1,812 school pupils attending grades 2 through 12 and ‘folk high school,’ who registered the temperature on different shelves in their own family´s refrigerator. The teachers handed out thermometers (Moller-Therm (+0.5/- 0.1◦ C) and the school pupils registered their data online.
\nResults and Findings
\nThe temperature on middle shelves at the back was the coldest (average 4.8 ◦C, SD 3.1). Da

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