A Constructivist Grounded Theory Study Protocol: What works for whom? Therapists and adolescents perspectives on indication criteria for schema therapy

This constructivist Grounded Theory study protocol outlines a qualitative investigation to develop evidence-based indication criteria for selecting between individual and group Schema Therapy for adolescents with Adverse Childhood Experiences by integrating the perspectives of experienced therapists and the lived experiences of the adolescents themselves.

The Gist

The Big Question: "Which Seat Fits Best?"

Imagine Schema Therapy (ST) as a specialized tool designed to fix deep emotional wounds caused by bad experiences in childhood (like neglect or abuse). Think of these wounds as "cracks" in a young person's foundation.

For a long time, therapists have had two ways to use this tool:

1. Individual Therapy: One-on-one sessions, like a private tutoring session.
2. Group Therapy: Sessions with other teens, like a study group.

Both methods have proven they work well in general. However, there is a big mystery: We don't know which method works best for which specific teenager.

Currently, it's a bit like a doctor prescribing medicine without a clear rulebook. Sometimes a teen gets put in a group, sometimes alone, but the decision is often based on a therapist's "gut feeling" rather than a clear guide. This study wants to write that rulebook.

The Goal: Building a "Recipe Book" from Experience

The researchers (a team of experts and a mental health organization) want to create a practical guide to help decide: When should a teen go to the "private tutoring" (individual) and when should they join the "study group" (group therapy)?

They aren't just guessing. They plan to build this guide by combining two types of wisdom:

1. The Chefs (Therapists): Experts who have cooked this meal for years. They know the ingredients and the techniques.
2. The Diners (Adolescents): The teens who have actually eaten the meal. They know what tasted good, what was hard to swallow, and what helped them feel better.

The Plan: How They Will Cook Up the Answer

This is a protocol, which means it is the plan for the study, not the final result yet. The study is currently in the "shopping for ingredients" phase. Here is how they will do it:

1. Gathering the Stories (Data Collection)

• The Chefs: The researchers will hold focus groups with experienced therapists. Imagine a roundtable discussion where therapists share their stories: "I sent this kid to a group, and it was a disaster. But that other kid? The group saved them."
• The Diners: They will interview teenagers (ages 16–23) who have already finished at least 20 sessions of therapy. They will ask: "Did you prefer being alone or with others? What made you feel safe? What made you want to quit?"

2. The Detective Work (Analysis)
The researchers are using a method called Constructivist Grounded Theory.

• The Analogy: Imagine they are building a puzzle, but they don't have the picture on the box. They have to look at every single piece (every interview and conversation) and figure out how they fit together as they go.
• They won't start with a list of answers to prove. Instead, they will let the answers emerge from the stories. They will keep asking questions until the picture becomes clear and no new pieces add anything new to the image (this is called "theoretical sufficiency").

3. The Safety Net
To make sure they aren't just hearing what they want to hear (confirmation bias), they have a few safety rules:

• They won't start with a hypothesis.
• They will double-check their findings with the participants (asking the teens and therapists, "Did we get this right?").
• They will have a team of different experts review the work to keep it honest.

What They Expect to Find (The "Recipe")

By the time they finish (expected around early 2027), they hope to have a theoretical model.

• What it is: A framework that explains why a therapist might choose one format over another for a specific teen.
• What it is NOT: It is not a magic crystal ball that guarantees a cure. It is a compass to help doctors make better decisions.

Why This Matters

Right now, if a teen is in the wrong format (e.g., a very shy kid forced into a loud group, or a kid who needs peer support stuck in a silent room), they might drop out of therapy or not get better.

This study aims to:

• Bridge the gap: Connect the "real world" experience of therapists with the "real world" feelings of teens.
• Personalize care: Move away from "one size fits all" to "what works for you."
• Lay the groundwork: This study is the first step. Once they have this "recipe," future scientists can test it with numbers and statistics to prove it works.

A Note on Timing

Important: This paper is a plan, not a report of finished results. The data collection is still happening. The researchers are currently talking to people, but they haven't analyzed the answers yet. The final "recipe book" is still being written.

Technical Summary

Technical Summary: A Constructivist Grounded Theory Study Protocol on Schema Therapy Indication Criteria for Adolescents

Problem Statement
Schema Therapy (ST) is an established, evidence-based treatment for complex mental health issues rooted in Adverse Childhood Experiences (ACEs). While ST has demonstrated effectiveness in both individual and group formats across various age groups, a significant gap exists in determining "what works for whom." Specifically, there is a lack of clear, research-based guidelines for selecting between individual and group ST for adolescents. This demographic presents unique developmental challenges, including heightened sensitivity to peer relationships, difficulties in trust-building, and emotion regulation issues, which may differentially impact their response to therapy formats.

Currently, the allocation of adolescents to specific ST formats relies heavily on therapist intuition and tacit knowledge rather than explicit criteria. This "practice–research gap" potentially leads to suboptimal treatment matching, increased dropout rates, and stagnating treatment outcomes for adolescents. Despite over a decade of clinical application of ST with traumatized adolescents, the specific factors influencing treatment selection and success in this population remain underexplored in the literature.

Methodology
This study employs a Constructivist Grounded Theory (CGT) approach, as developed by Charmaz, to generate a theoretical model based on practice-based evidence. The study is currently in the data collection phase, with recruitment ongoing until theoretical sufficiency is reached.

• Participants: Two distinct groups are being purposively sampled:
  1. Therapists: Certified senior schema therapists with experience in both individual and group ST and recent experience (within five years) treating traumatized adolescents.
  2. Adolescents: Individuals aged 16–23 who have experienced one or more ACEs and have completed at least 20 sessions of individual or group ST.
• Data Collection:
  • Focus Groups: 3–8 therapists per session, lasting approximately 90 minutes, conducted in-person or online to elicit expert clinical reasoning.
  • Semi-structured Interviews: Individual sessions with adolescents (approx. 60 minutes) to explore lived experiences, preferences, and perceptions of treatment effectiveness.
  • Recruitment utilizes multiple channels (mental health institutions, social media) and snowball sampling.
• Data Analysis:
  • Analysis is conducted collaboratively by a research team comprising three ST experts and one qualitative research specialist.
  • The process follows the iterative CGT cycle: open coding (using ATLAS.ti), focused coding, and theoretical sampling.
  • Data collection and analysis occur simultaneously to refine emerging categories.
  • Rigor is maintained through constant comparison, peer debriefing, reflexivity, field notes, and member checking (participant validation).
• Reporting: The study adheres to the Consolidated Criteria for Reporting Qualitative Research (COREQ) checklist.

Key Contributions and Expected Results
As a study protocol, this paper does not present final empirical results but outlines the framework for developing a practice-based indication framework. The anticipated contribution is a theoretical model that integrates:

1. Therapists' clinical reasoning regarding the selection of individual versus group formats.
2. Adolescents' lived experiences, preferences, and perceptions of what constitutes effective treatment.

The analysis aims to identify specific criteria that influence the suitability of a therapy format for individual adolescents, moving beyond group-level outcome data to address personalized treatment needs.

Significance and Claims
The authors position this study as a necessary first step in bridging the gap between clinical practice and empirical research in adolescent psychotherapy.

• Personalization: The study seeks to make implicit clinical reasoning explicit, supporting more personalized care and informed clinical decision-making.
• Foundation for Future Research: The authors explicitly state that the resulting framework is descriptive and exploratory, not prescriptive. It is intended to serve as a conceptual tool for clinical reflection and a foundation for generating hypotheses.
• Validation: The identified criteria are designed to be operationalized in future quantitative studies to validate their association with treatment engagement, outcomes, and dropout rates.
• Addressing Clinical Challenges: By improving treatment matching, the study aims to address key challenges in adolescent mental health, specifically suboptimal outcomes and high dropout rates.

The paper maintains a modest stance, acknowledging that the findings will be co-constructed and context-dependent, reflecting perceived suitability and professional judgment rather than empirically established predictors of outcome at this stage.