Improving Public Recycling with Nudges: Evidence from a Field Experiment in The LINK REIT’s Shopping Centres

To encourage using recycling bins, the experiment tests whether the graphic information cues are working on people’s behaviour.


  • Directional Sign and Stop sign are placed beside the trash bin
  • Total 27 treated bins installed in the shopping mall

Dependent Variable

  • Weekly amount (in grams) of recyclable materials (i.e., paper, plastic and aluminum) in recycling bins
  • Collected and weighed by Student Interns (MA in Public Policy and Management) every Tuesday and Friday

Design - Reversal (A-B-A) Design with Comparison Group


  • The amount of recyclable materials is apparently affected by the installation and removal of interventions
  • Around 20% net increase in amount of recycling after installing the interventions