Clinician guide
How to Calculate an Exact Single-Case Randomization p Value
Calculate an exact single-case randomization p value by scoring every permissible assignment, applying a declared tail rule, and reporting discrete resolution.
Clinician Resources
Clinical guides, tools, and evidence-informed resources for thoughtful, high-quality ABA care.
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Clinician guide
How to Define Permissible Randomizations Before a Single-Case Study
Define permissible single-case assignments before a study by recording clinical constraints, candidate schedules, probabilities, the random draw, and exclusions.
Clinician guide
How to Run a Randomization Test for a Single-Case Design
Learn the design prerequisite, assignment set, statistic, exact p value, visual-analysis role, and inference limits for a single-case randomization test.
Clinician guide
How to Report Single-Case Effect Metrics Without Universal Cutoffs
Learn how to report single-case metrics without universal cutoffs using formula versions, phase sizes, raw values, uncertainty, design evidence, and priorities.
Clinician guide
How to Run a Sensitivity Analysis Across Single-Case Metrics
Run a single-case metric sensitivity analysis on one locked dataset, preserving formulas, tie rules, divergent values, design context, and planned interpretation.
Clinician guide
How to Handle Unequal Phase Lengths in Single-Case Metrics
Handle unequal phase lengths in single-case metrics by reporting actual point and pair denominators, score increments, missingness, and design-specific limits.
Clinician guide
How to Compare Rank Nonoverlap With Mean Level Change
Compare rank nonoverlap versus mean level change using one locked dataset, with pair scores, outlier sensitivity, original-unit distance, and visual context.
Clinician guide
How to Interpret 0% PND When Phase Levels Still Differ
Interpret zero PND with a phase-level change by tracing the baseline extreme, preserving the outlier, comparing distributions, and integrating visual evidence.
Clinician guide
How to Interpret 100 Percent Nonoverlap in a Small Sample
Interpret 100 percent nonoverlap in a small sample by reporting phase sizes, possible score increments, pair counts, variability, replication, and uncertainty.
Clinician guide
How to Handle Zero Baseline Variability in a Two-SD Band
Handle zero baseline variability in a two-SD band by verifying precision and repeated values, documenting the collapsed band, and selecting other evidence.
Clinician guide
How to Calculate a Two-Standard-Deviation Band
Calculate a two-standard-deviation band with a declared SD convention, baseline mean, upper and lower limits, later points, raw data, and assumption checks.
Clinician guide
How to Decide Whether to Correct Tau for Baseline Trend
Make a Tau baseline-trend correction decision with a predeclared direction, threshold, exact method, corrected and uncorrected values, and reproducibility checks.
