Fig 1.
Ecolabels tested in Studies 1 and 2.
a) Study 1, A-E label: a total composite environmental impact score on an A-E scale with a traffic light colour gradient with five colours ranging from dark green to dark red; b) Study 1, Petal label: displaying four environmental impact values and using text, colour, and “petal” size as cues; c) Study 1, Combined label: displaying labels a and b, above; d) Study 2, refined A-E label: same A-E label used in Study 1 with smaller descriptive text, e) Study 2, Globe label: a single A-E score centered in a globe image with a five-colour traffic light gradient ranging from dark green to dark red; f) Study 2, ‘Better’ label: a green globe with the text “Environmental Impact Score” above the circle and the word ‘Better’ displayed inside; g) Study 2 ‘Worse’ label: a red globe with the text “Environmental Impact Score” above the circle and the word “Worse” displayed inside.
Table 1.
Baseline characteristics of the Study 1 and Study 2 participants.
Fig 2.
Difference in environmental impact scores.
EIS (in percentiles), with 95% CIs, compared to Control (marked as X = 0) in Study 1 (a) and Study 2 (b).
Table 2.
Comparison of the individual environmental impact indicators between trial groups in Study 1.
Table 3.
Comparison of the individual environmental impact indicators between intervention groups and control in Study 2.
Table 4.
Comparison of spend and nutrient composition of the shopping basket between trial groups.