Testing taste sensitivity and aversion in very young children: development of a procedure

Area of Science:

• Pediatric sensory science
• Developmental psychology
• Chemosensation research

Background:

• Understanding taste perception in early childhood is crucial for dietary habits and health.
• Previous research has faced challenges in accurately assessing taste in young children due to methodological limitations.

Purpose of the Study:

• To investigate the feasibility and reliability of measuring taste perception (sucrose and urea) in 3- to 6-year-old children.
• To establish age-appropriate methods for assessing taste detection and aversion in a pediatric population.

Main Methods:

• Utilized specially designed procedures for young children, including a staircase method for detection thresholds and hedonic assessment with facial expressions for aversion.
• Measured detection thresholds for sucrose and urea, and urea aversion in 45 children (ages 3-6).
• Assessed test-retest reliability through repeated measurements on subgroups of children.

Main Results:

• All children successfully completed the taste perception tasks, indicating the procedures were understandable and performable.
• Mean threshold estimates were 31 mmol/l for sucrose detection, 59 mmol/l for urea detection, and 134 mmol/l for urea aversion.
• Satisfactory test-retest stability was observed over short intervals, though longer intervals showed decreased urea threshold stability, potentially due to reduced motivation.

Conclusions:

• Taste perception, including sucrose detection and urea detection/aversion, can be reliably studied in young children with age-tailored methods.
• Short, engaging, and easy-to-understand procedures are essential for obtaining valid taste data in pediatric populations.
• Some children exhibit extreme sensitivity to urea taste, warranting further investigation.