A diverse group of children and teens at a table, with symbolic foods representing feeding disorders.

Decoding Picky Eating: The New Interview Helping Kids and Teens Eat Healthier

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Lena Voss in Health & Wellness November 2026 • 4 min read.

"A groundbreaking interview tool offers new hope for understanding and addressing feeding disorders in children and adolescents."


For many parents, mealtime can be a battleground. Picky eating, food aversions, and unusual eating habits can be more than just quirks; they might signal an underlying feeding disorder. Recognizing and addressing these issues early is crucial for a child's health and well-being. Now, a new tool is helping clinicians and researchers get a clearer picture of these complex conditions.

Avoidant/Restrictive Food Intake Disorder (ARFID), pica (eating non-food items), and rumination disorder (RD) are complex conditions recently recognized in the DSM-5. To better understand and treat these disorders, researchers developed the Pica, ARFID, and Rumination Disorder Interview (PARDI). This structured interview assesses the presence and severity of these diagnoses, offering valuable insights for tailored treatment plans.

The PARDI is designed as a multi-informant tool, meaning it gathers information from multiple sources, including the child or adolescent and their parents or caregivers. This comprehensive approach ensures a more complete and accurate understanding of the individual's eating behaviors and challenges. Let's explore how this innovative interview is changing the landscape of feeding disorder diagnosis and treatment.

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Recognizing ARFID Beyond Picky Eating

ARFID limits the amount or type of food a person eats and is not driven by a distorted self-image or an attempt to lose weight. In children, extreme picky eating and low interest in food can contribute to poor growth and poor nutrition. These features show why treating restricted eating as ordinary picky eating alone may overlook a clinically significant eating disorder.

What is the Pica, ARFID, and Rumination Disorder Interview (PARDI)?

A diverse group of children and teens at a table, with symbolic foods representing feeding disorders.

The Pica, ARFID, and Rumination Disorder Interview, or PARDI, is a structured interview designed to diagnose and assess the severity of three distinct feeding disorders: Avoidant/Restrictive Food Intake Disorder (ARFID), pica, and rumination disorder (RD). It functions as a comprehensive tool for clinicians and researchers by providing a standardized method to evaluate these complex conditions across different ages.

Unlike less structured evaluations, the PARDI uses specific criteria and questions to gather detailed information about a person’s eating habits, preferences, and any related medical or psychological issues. It aims to provide a complete picture of the individual's feeding behaviors, helping to differentiate between typical picky eating and more serious disorders that require intervention.

  • Multi-Informant Approach: Gathers insights from both the individual and their caregivers.
  • Comprehensive Assessment: Evaluates ARFID, pica, and RD using DSM-5 criteria.
  • Severity Ratings: Measures the intensity of symptoms for each disorder.
  • Profile Evaluation: Assesses specific aspects of ARFID, such as sensory sensitivity, lack of interest in eating, and fear of aversive consequences.
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Structured Interviews for ARFID

Recent literature identifies the Pica, ARFID, and rumination disorder interview (PARDI) and the ARFID module of the Eating Disorder Examination as the first structured clinical interviews for ARFID. These tools can support diagnosis and dimensional assessment of psychopathology severity. The PARDI is a parent semi-structured interview that provides an ARFID severity rating and assesses three common profiles: sensory sensitivity, lack of interest in eating or food, and concern about aversive consequences. Researchers describe these instruments as useful for establishing prevalence, distinguishing people with ARFID from healthy controls, and evaluating novel treatments.

The PARDI's structure helps ensure that no critical areas are overlooked, leading to more accurate diagnoses and better-targeted treatment strategies. Its standardization also makes it valuable for research, allowing for comparisons across different studies and populations.

Why the PARDI Matters

The PARDI represents a significant step forward in how we understand and address feeding disorders. By providing a comprehensive, standardized, and multi-informant approach, it helps clinicians and researchers alike. It leads to more accurate diagnoses, better-tailored treatments, and ultimately, healthier and happier lives for children and adolescents struggling with these conditions. As research continues, the PARDI promises to be an invaluable tool in unraveling the complexities of feeding disorders.

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Why Prevalence Estimates Vary

Reported estimates of ARFID vary substantially depending on the population and assessment method. One review cites an estimate of 0.3% from clinical interviews in an epidemiological study of Australian adults. It also cites 3.2% from a self-report survey of Swiss schoolchildren ages 8–13. The difference illustrates why prevalence figures should be interpreted in context rather than treated as directly interchangeable.

What the initial PARDI findings show

In this initial sample, the interview’s ratings distinguished participants with ARFID from healthy controls on severity and profile measures. That supports its potential to capture meaningful differences, but does not by itself establish how well it performs in other settings or groups.[1]

What limits confidence in the early evidence

  • The authors describe the psychometric results as preliminary and specifically frame them in relation to ARFID.[1]

The PARDI pilot: a multi-informant interview study

PopulationParticipants aged 10–22 years with ARFID, clinically significant avoidant/restrictive eating, and healthy controls[1]
Sample size39 with ARFID, 8 with clinically significant avoidant/restrictive eating, and 10 healthy controls[1]
Settingclinical and research settings[1]
Comparisonhealthy controls[1]
Main outcomeFeasibility, acceptability, reliability, and validity of the PARDI in relation to ARFID[1]
Effect sizeInter-rater reliability for the ARFID diagnosis was moderate (κ = 0.75)[1]
Times cited230[1]

How later work has used and assessed the PARDI

Later researchers have used the PARDI to confirm ARFID diagnoses and assess symptom severity, showing its role as a measurement tool in subsequent studies rather than only as a newly developed interview.[2]

A later validation study examined factor structure and validity in a larger sample that included ARFID, subclinical ARFID, and healthy-control groups, extending the initial pilot’s psychometric focus.[3]

A 2023 report describes administration to parents by a trained assessor who was not the treating clinician, illustrating one way the interview has been used in case assessment.[4]

Sources

  1. Development of the Pica, ARFID, and Rumination Disorder Interview, a multi‐informant, semi‐structured interview of feeding disorders across the lifespan: A pilot study for ages 10–22 (Wiley, 2018)
  2. Anticipatory and consummatory pleasure in avoidant/restrictive food intake disorder (2023)
  3. The factor structure and validity of a diagnostic interview for avoidant/restrictive food intake disorder in a sample of children, adolescents, and young adults (pmc.ncbi.nlm.nih.gov)
  4. Psychoeducational and motivational treatment for low-weight Avoidant/Restrictive Food Intake Disorder (ARFID): Three case reports in school-aged children (2023)

About this Article -

Written with AI assistance from published research, and reviewed by the Mystum team. See our About page for more information.

This article is based on research published under:

DOI-LINK: 10.1002/eat.22958, Alternate LINK

Title: Development Of The Pica, Arfid, And Rumination Disorder Interview, A Multi‐Informant, Semi‐Structured Interview Of Feeding Disorders Across The Lifespan: A Pilot Study For Ages 10–22

Subject: Psychiatry and Mental health

Journal: International Journal of Eating Disorders

Publisher: Wiley

Authors: Rachel Bryant‐Waugh, Nadia Micali, Lucy Cooke, Elizabeth A. Lawson, Kamryn T. Eddy, Jennifer J. Thomas

Published: 2018-10-12

Everything You Need To Know

1

What exactly is the Pica, ARFID, and Rumination Disorder Interview (PARDI)?

The Pica, ARFID, and Rumination Disorder Interview (PARDI) is a structured interview created to help diagnose and assess the severity of feeding disorders in children and adolescents. It focuses on three specific conditions: Avoidant/Restrictive Food Intake Disorder (ARFID), pica (eating non-food items), and rumination disorder (RD). The PARDI uses specific criteria and questions to gather detailed information, helping clinicians differentiate between typical picky eating and more serious disorders that need intervention. It helps provide a complete picture of the individual's feeding behaviors and challenges.

2

Why is the Pica, ARFID, and Rumination Disorder Interview (PARDI) so important?

The PARDI is important because it offers a standardized, multi-informant approach to diagnosing feeding disorders. This is crucial as it helps to ensure more accurate diagnoses, which in turn leads to more effective, tailored treatment plans. The structured nature of the PARDI ensures that no critical areas are overlooked during the evaluation of conditions like ARFID, pica, and RD, improving the potential for better outcomes for those affected.

3

What does it mean that the Pica, ARFID, and Rumination Disorder Interview (PARDI) uses a multi-informant approach?

The PARDI is a multi-informant tool, gathering insights from the child or adolescent and their parents or caregivers. This approach is significant because it provides a more complete and accurate understanding of the individual's eating behaviors and challenges. This comprehensive method allows the clinicians to gather a wide range of information to ensure no key information is missed, which improves diagnosis and treatment outcomes.

4

Can you explain Avoidant/Restrictive Food Intake Disorder (ARFID) and how it is related to the Pica, ARFID, and Rumination Disorder Interview (PARDI)?

Avoidant/Restrictive Food Intake Disorder (ARFID) is one of the feeding disorders assessed by the PARDI. ARFID involves avoiding certain foods or restricting intake based on sensory sensitivities, lack of interest in eating, or fear of aversive consequences. The PARDI assesses these specific aspects of ARFID, which allows clinicians to understand the underlying causes of a child's eating difficulties and develop targeted interventions to address these issues. For example a child may have sensory sensitivity to the texture of certain food, leading them to restrict food.

5

What are the real-world implications of using the Pica, ARFID, and Rumination Disorder Interview (PARDI)?

The implications of using the PARDI are far-reaching. By using the PARDI, clinicians and researchers can better understand and address feeding disorders like ARFID, pica, and rumination disorder (RD). This leads to more accurate diagnoses, which supports better-targeted treatment strategies, resulting in healthier and happier lives for children and adolescents. It also facilitates research, allowing for comparisons across different studies and populations, advancing the understanding and treatment of feeding disorders as a whole.

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