A major release that tailors the package to the 4th edition of Maxwell, Delaney, and Kelley, Designing Experiments and Analyzing Data: A Model Comparison Perspective (2026, Routledge).
chapter_1_table_1) and its short alias (e.g., C1T1), and the
numeric coding of variables is preserved so the book's model-comparison
and contrast examples reproduce exactly.chapter_7_table_15 becomes chapter_7_table_16, chapter_7_table_23
becomes chapter_7_table_24, chapter_9_table_11 becomes
chapter_9_table_12, chapter_12_table_21 becomes chapter_12_table_29,
chapter_13_table_5 becomes chapter_13_table_6, chapter_13_table_12
becomes chapter_13_table_10, and the split-plot
reaction-time tables chapter_14_table_8 and chapter_14_table_10
become chapter_14_table_7 and chapter_14_table_9. Only the names
changed; the data values are identical. The short aliases were renamed to
match (for example, C7T15 becomes C7T16).chapter_14_table_8 (the M and D scores for
the data in Table 14.7) and chapter_14_table_10 (the M, D1, and
D2 scores for the data in Table 14.9), each also under its short alias
(C14T8, C14T10).chapter_13_table_14 (and its alias C13T14). Its slope and
linear-trend scores correspond to a 3rd-edition table that is not part of the
4th edition; the linear-trend values it tabulated remain available as the
Linear column of chapter_13_table_10.chapter_4_table_7 (and its alias C4T7). It held data for a
3rd-edition demonstration that the sums of squares of orthogonal contrasts are
additive while those of nonorthogonal contrasts are not; in the 4th edition
that demonstration moved to the online supplement
(designingexperiments.com/supplements), so the data set no longer corresponds
to a printed table. The 4th edition's printed Table 4.7 is the Exercise 11
data, which is already shipped as chapter_4_exercise_11.chapter_7_table_9 (and its alias C7T9). It had
held a 36-row combined data set (the Table 7.5 blood-pressure data with a
sixth observation appended to each cell). The 4th edition's Table 7.9 is
instead the six additional observations themselves (one per cell), so the
data set now holds those six rows. Stacking them onto chapter_7_table_5
with rbind() recreates the six-per-cell data whose cell and marginal means
are reported in Table 7.10.remotes::install_version("AMCP", "1.0.2").Variables lists in several help pages that had been
copied from the wrong data set, so the documented variables now match
the shipped columns: chapter_3_table_3, chapter_7_table_11,
chapter_10_table_9, chapter_11_table_20, and chapter_13_table_10.inst/WORDLIST for the package's domain vocabulary.chapter_13_table_10 examples now show how its linear and quadratic D
variables are formed from the raw three-level data of chapter_13_table_2
using the orthogonal-polynomial coefficients of Appendix Table A.10.chapter_7_table_9 examples now show how its six additional observations
combine with chapter_7_table_5 to reproduce the cell and marginal means of
Table 7.10.Feedback and Drug variables of chapter_7_table_5 and
chapter_7_table_9 informative level labels (Feedback: 1 = biofeedback
present, 2 = absent; Drug: 1 = X, 2 = Y, 3 = Z), matching the labels used in
the book's Table 7.10.Note on its help page identifying the change (and,
for a renumbered or reused name, the corresponding 3rd-edition name), so
readers coming from the 3rd edition are not misled by a shifted or reused
table number.testthat (edition 3) test suite that loads every data set,
checks that the long and short aliases agree, and reproduces several
numeric results reported in the book (the Chapter 3 one-sample
t test, the Chapter 13 trend-contrast omnibus F, and the Chapter 9
Pygmalion heterogeneity-of-regression slopes).factors-and-coding, with recipes for attaching
factor labels to the numerically coded variables without changing the
canonical data, including a worked example confirming that relabeling
reproduces the book's results.CITATION file.news(package = "AMCP") for the
list of changed tables, and directing 3rd-edition (2018) users to the archived
remotes::install_version("AMCP", "1.0.2").URL field.