Measuring perception · The instrument · Element

The questions

What is asked, in the exact wording used.

The part

What it is

Open questions before closed ones, so that the closed list does not prime the open answers.

Wording held identical between waves. Small improvements are the most common cause of a broken trend.

The smallest level

The attributes it carries

Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.