What does this research mean for the field?

Polynomial regression and response surface analysis reveal nuanced, nonlinear associations in narrative identity research that are obscured by conventional unidimensional analytic approaches like difference scores. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To demonstrate how polynomial regression and response surface analysis overcome the restrictive assumptions of conventional difference scores when evaluating multidimensional narrative identity data.

September 3, 2026Identity

Plotting the Whole Story: The Use of Polynomial Regression in Narrative Identity Research

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Authors

GWGrace WasingerIowa State University KCKristi A. CostabileIowa State University LSLukas K. SotolaPace University

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Implication

Methodological demonstration reveals nonlinear emotional associations with negative self-image in adults with ADHD, highlighting the utility of response surface analysis.

Key Points

To demonstrate how polynomial regression and response surface analysis overcome the restrictive assumptions of conventional difference scores when evaluating multidimensional narrative identity data.
Conducted a methodological tutorial and demonstration using written diagnostic narratives from a sample of adults with Attention-Deficit/Hyperactivity Disorder (ADHD).
Coded narrative texts for initial and concluding affective components to predict negative self-image using polynomial regression, response surface analysis, and traditional difference scores.
Response surface analysis identified complex, nonlinear associations between initial and concluding affect and negative self-image.
Traditional unidimensional metrics, including difference scores and single measures of redemption, obscured significant joint affective patterns.

Cite This Study

Wasinger et al. (2026) studied this question.

synapsesocial.com/papers/6a9934cf636c6408cfa7c85f https://doi.org/10.1080/15283488.2026.2715510

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Implication

Methodological demonstration reveals nonlinear emotional associations with negative self-image in adults with ADHD, highlighting the utility of response surface analysis.

Plotting the Whole Story: The Use of Polynomial Regression in Narrative Identity Research

Discussion

Member takes

Implication

Key Points

Cite This Study

Plotting the Whole Story: The Use of Polynomial Regression in Narrative Identity Research

Discussion

Member takes

Implication

Key Points

Cite This Study

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