Elena is the sustainability director for a busy metropolitan rail network. She is concerned about the volume of waste generated at stations. Elena wants to encourage commuters to use the smart recycling bins on platform walkways for their plastic bottles and aluminum cans, rather than discarding them in general waste bins. She also wants to persuade commuters to download digital e-tickets onto their mobile devices instead of printing paper tickets at station kiosks.
Outline at least one psychological technique a psychologist might advise Elena to use to encourage commuters to increase recycling and reduce paper ticket waste.
