The Impact of Environmental Labelling on Consumer Preference: Negative vs. Positive Labels

Eco-labels in use today signify environmentally benign outcomes: "Choose this product, it is better for the environment than the average product." Another strategy would be to indicate negative outcomes with the purpose of trying to persuade consumers to avoid a product: "Do not choose this product, it is worse for the environment than the average product." In a computer-based experiment, it was investigated how these two types of labels affected preference for some everyday products. Individuals who had a weak or no interest in environmental issues were unaffected by either kind of label. Individuals with an intermediate interest in environmental issues were more affected by a negative label than by a positive label. Individuals with a strong interest in environmental protection were equally affected by the two kinds of labels.     

The impact of environmental information on professional purchasers' choice of products

Professional food purchasers are an important group of people since they influence what alternatives of a food product consumers will have the possibility to choose between. The aim of the present study was to investigate the inclination among professional purchasers to choose food products associated with more benign environmental consequences. Information about product price, total use of energy, emission of greenhouse gases and use of pesticides associated with production and consumption of one kilogram of minced beef and fresh apples was varied systematically in order to study the relative influence on product preference. Product price was found to influence product preference more than any of the three environmentally related factors. Introduction of a labeling system that indicated whether the environmental impacts associated with a food product during its life cycle were ‘better’ or ‘worse’ than an average product partly increased the effect of environmental information. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment.