Prompting methods affect the accuracy of children's school lunch recalls

Area of Science:

• Nutrition Science
• Developmental Psychology
• Educational Research

Background:

• Accurate dietary recall is crucial for nutritional assessment in children.
• Existing methods for collecting dietary data from children have limitations in accuracy.
• Specific prompting techniques are being explored to improve the reliability of children's food reporting.

Purpose of the Study:

• To assess the feasibility of three specific prompting methods for first and fourth graders.
• To validate children's recall accuracy against direct observation.
• To develop and establish a reliable measure of recall inaccuracy for future research.

Main Methods:

• Children (first and fourth grade) were observed eating school lunch and interviewed the next morning.
• Interviews included free recall, non-suggestive prompted recall, and specific prompted recall (preference, food category, visual).
• A novel measure of inaccuracy was developed, weighting food items and summing absolute differences between reported and observed amounts.

Main Results:

• Before specific prompting, median inaccuracy was higher in first graders (2.7 servings) than fourth graders (1.7 servings).
• Specific prompting had varied effects: it improved recall for some but decreased it for others in both grades.
• Food category prompting showed minimal gains for fourth graders but was less beneficial for first graders.

Conclusions:

• Specific prompting methods, particularly for first graders, may not consistently improve dietary recall accuracy and can sometimes decrease it.
• Prompting for food category offers modest benefits for fourth graders' recall accuracy.
• Further validation studies with larger, diverse samples are needed to optimize prompting strategies for accurate dietary recall across different populations and meals.