Optimising Repeated Exposure: Determining Optimal Stimulus Shape for Introducing a Novel Vegetable among Children

Area of Science:

• Pediatric Nutrition
• Food Science
• Behavioral Science

Background:

• Healthy diets rich in fruits and vegetables are vital for preventing chronic diseases.
• Many children do not meet recommended daily intake guidelines for vegetables.
• Strategies to increase vegetable consumption in children are needed.

Purpose of the Study:

• To investigate the impact of serving style on children's consumption of raw daikon.
• To assess how repeated exposure to daikon in different shapes influences liking and intake.
• To explore potential generalization effects on liking of other vegetables.

Main Methods:

• 185 children aged 3-5 years participated in a study across three kindergartens.
• Intervention groups were repeatedly exposed to daikon served as sticks, triangles, or grated.
• Vegetable liking and intake were measured at baseline, post-intervention, and follow-up sessions.

Main Results:

• Significant increases in daikon liking and intake were observed for stick and triangle serving styles compared to the control group.
• The grated daikon group showed no immediate significant changes but performed well long-term.
• Overall, intake increased during exposure, with mere exposure proving effective across all shapes.

Conclusions:

• Repeated exposure to raw daikon, regardless of serving style, can enhance children's liking and intake.
• While stick and triangle shapes showed initial benefits, no single style was definitively superior.
• Further research may be needed to optimize serving strategies for long-term vegetable acceptance.