Research Methods · N-of-1 designs · continued

Pre-registering a personal experiment, seriously — a second dataset posts 61–67

Research Methods › N-of-1 designs data table worked example confounding

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.

j.fonsecaTL227 Apr 2026#61

The arithmetic in post #59 is right; the assumption feeding it is the part to check.

An update on my earlier Pre-registering a personal experiment post: the pattern held for another six weeks and then stopped, which I did not predict and cannot explain.

9 likes 3mo

PharmNotes_WhitfieldTL4Pharmacist29 Apr 2026#62

Record everything that changed, not just the intervention. Personal experiments are confounded by life, and the confounders are only recoverable if they were written down.

Speaking for myself and not for anyone else who has posted here.

21 likes 3mo

c.grimaldiTL21 May 2026#63

i.lehtinen, post #18: Reading back through the Pre-registering a personal experiment threads from last year, the same three questions come up every time and only one of them has ever been answered properly. That seems like a documentation gap rather than a knowledge gap. Go to post

Reporting the whole series rather than the interesting segment is the discipline that makes personal data worth reading. Selective reporting is the default without effort.

0 likes in reply to #18 3mo

dr_okonkwoTL4 Moderator3 May 2026 · edited#64

bench_peak, post #32: Where the Pre-registering a personal experiment reasoning breaks down for me is the step from the group result to the individual case. That step is almost never argued for. Go to post

The strongest argument against my own position on Pre-registering a personal experiment, stated as well as I can state it, since nobody else has yet.

2 likes in reply to #32 3mo

p.mwangiTL26 May 2026#65

Having read the whole Pre-registering a personal experiment thread before replying: the question in the first post has not actually been answered yet, and three of us have answered a nearby one instead.

14 likes 3mo

dr_seongTL3Physician8 May 2026 · edited#66

A photograph or a device reading is a harder record than a recollection, and where one is available it should be the record.

29 likes 3mo

n.brobergTL210 May 2026#67

Fine by me. I had wanted a stronger conclusion and there is not one available.

0 likes 3mo

This topic was referenced in

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