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Related Experiment Video

Updated: Apr 14, 2026

Assessing the Coherence of Parents' Short Narratives Regarding their Child Using the Five-Minute Speech Sample Procedure

Assessing the Coherence of Parents' Short Narratives Regarding their Child Using the Five-Minute Speech Sample Procedure

Published on: September 19, 2019

Vegetable parenting practices scale. Item response modeling analyses.

Tzu-An Chen¹, Teresia M O'Connor¹, Sheryl O Hughes¹

¹USDA/ARS Children's Nutrition Research Center, Baylor College of Medicine, 1100 Bates Street, Rm. 4012, Houston, TX 77030, USA.

|April 22, 2015

Summary

This summary is machine-generated.

This study found that vegetable parenting practices scales may function differently across child demographics. Researchers should use these scales cautiously and consider item response modeling for better analysis.

Keywords:

Differential item functioning Multidimensional item response modeling Parenting practices Vegetable

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Last Updated: Apr 14, 2026

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Area of Science:

Child Psychology
Nutritional Science
Psychometrics

Background:

Parenting practices significantly influence children's dietary habits.
Assessing vegetable parenting practices accurately is crucial for childhood obesity prevention.
Existing scales require rigorous psychometric evaluation for diverse populations.

Purpose of the Study:

To evaluate the psychometric properties of a vegetable parenting practices scale.
To assess item fit and distributional characteristics using multidimensional polytomous item response modeling.
To investigate differential item functioning across child demographics (gender, ethnicity, age, income).

Main Methods:

Parents of 3-5 year old children completed a self-reported vegetable parenting practices scale online.
The scale comprised 14 effective and 12 ineffective vegetable parenting practices items, each with responsiveness, structure, and control subscales.
Multidimensional polytomous item response modeling was applied separately to effective and ineffective items.

Main Results:

One effective vegetable parenting practice item showed poor model fit across groups.
Differential item functioning was detected across child's age and ethnicity, particularly for effective items.
Wright maps indicated limited coverage of the full latent trait distribution for both effective and ineffective items.

Conclusions:

Vegetable parenting practices scale items exhibited differential functioning based on child demographics, necessitating cautious use.
Item response modeling is recommended for analyzing parenting practice questionnaires to better understand demographic variations.
Further refinement of scales is needed to ensure accurate measurement across diverse populations.