Your own case
What else could explain it
What you learn hereFor a change you noticed in your own log, name what else could explain it —starting from your worst point, the natural course, and the effect of measuring— and say what the log is missing before you can believe it.
This page summarises the lesson and cites its sources. The full lesson —animated, narrated, with its practice— opens with the Lifetime Pass, along with the rest of the course and everything to come.
See the Pass — CA$39 →SourcesBarnett, van der Pols & Dobson, 2005 — regression to the mean is arithmetic, not a finding · Whiteford et al., 2013 (primary care, mostly mild-to-moderate cases) · McCambridge, Witton & Elbourne, 2014 and Levitt & List, 2011 — the Hawthorne effect is real and poorly characterised, with no figure to quote · CENT, 2015 · SCRIBE, 2016 · WWC single-case design standards, 2010 (three data points per phase minimum, five for the top rating) — none of them can tell you why your number changed · Updated 2026-07-25