You're estimating, so treat this as a rough figure
Step 3 of 5
People are bad at this in both directions. Across 106 studies, only about 6% of people's average guesses landed within 5% of what their device actually recorded, and roughly as many people guessed too high as guessed too low.
So we're not going to apply a correction and pretend it's science. If you think your guess is off, nudge it. Otherwise leave it.
Parry et al., 2021 · meta-analysis, 106 effect sizes
What the research says
Self-reported media use correlates only moderately with what devices log: r = 0.38, below what researchers treat as adequate agreement. Which is why we'd rather you read the real number.
Parry et al., 2021 · meta-analysis, 106 effect sizes, Nature Human Behaviour
Sources