Fact · Dictation
39participants
The habit curve fitted 62 individuals in the 2010 study, and 39 of them showed a good fit.
Checked against its source on October 16, 2026
In the source's own words
“The model fitted for 62 individuals, of whom 39 showed a good fit.”
How are habits formed: Modelling habit formation in the real world, Phillippa Lally et al., European Journal of Social Psychology, 2010, Abstract.
Open the original (DOI 10.1002/ejsp.674)- What it measures
- A good fit means the person's daily automaticity ratings followed a levelling-off curve.
- What it does not show
- Fewer than two-thirds of the individual fits were good, so individual timings are uncertain.