Yokely and Glenwhick

• The aim was to see the effectiveness of four conditions in motivating parents of preschool children to inoculate their kids.
• The sample consisted of 2,101 children then it was halved to 1,133 children.
• The study was carried out on an entire population of immunisation-deficient cities.
• They predicted that in terms of effectiveness, the conditions will be in the order:

  • Monetary incentive
  • Increased access
  • Specific prompt
  • General prompt
• General prompt: This was a general prompt to motivate parents to try and inoculate their kids.
• Specific prompt: This prompt had the name of the child as well as the specific inoculations that he or she needed to get.
• Increased access: This prompt included a general prompt to parents and it also included details about how they could drop their kids at their daycare facilities for the day and their extra hours.
• Monetary incentive: This was a specific prompt and information about a cash lottery draw that offered three cash prize draws that included a ticket that needed to be handed in at the clinic where the child gets their immunisation.
• There were two control groups:

  • Contact control group
  • No contact
• Contact control group: They only got a phone call (no mail).
• No contact: They got no mail and no phone call, they were not contacted at all.
• The specific and increased access prompt increased immunisations by 29%.
• There were differences between the groups in terms of how many immunisations, frequency of children getting immunised, and total immunisations are given.
• The monetary incentive group had the biggest impact.
• They found out that the hypothesis was right.
• They found out that the most cost-effective one was the specific prompt, and the monetary one was not cost-effective in the long run.