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Single-case effect size & analysis

nap()
Nonoverlap of All Pairs (NAP)
interpret_nap()
Interpret a NAP value (Parker & Vannest 2009 bands)
nonoverlap_analyze()
Single-case A-vs-B analysis: NAP + threshold verdict + decision band

Reasoning & plot

combine_verdicts()
Combine per-item verdicts into an honest overall (supported/partial/refuted)
phase_plot()
Generic single-case phase plot (A vs B, decision band, threshold line)

Ordinal to interval (Rasch)

rasch_measure()
Fit a dichotomous Rasch model by JMLE (ordinal -> interval)
raw_score_measure()
Raw-score -> Rasch-measure conversion table for a calibrated item set

Utilities

rbind_fill()
Row-bind two data.frames with differing columns (fill missing with NA)
first_last()
First and last non-NA of a vector