Worksheet · Workplace

Intelligible speech cuts staff attention most on an open floor

Verbal short-term memory begins to fall at a speech transmission index of 0.21 to 0.44, on a staff bill that a 2006 REHVA guidebook puts at 100 to 200 times the energy bill.

Corporate real estate manager · V10 · checked 2026-08 · member

Members only

Read the full worksheet

This worksheet is for members. Membership includes everything The Built Review publishes.

What membership includes

Reports
Scientifically grounded analysis of the topics that move the market.
Worksheets
Working documents for practice, with the science behind every point.
Factorsheets
A statement on one cause and its effect, supported by the studies in the collection that measure both.
Studysheets
The relevant findings from current research.
Trends
Trend analysis of the market and the science in the built environment.
Downloads
Every report and Trends issue as Markdown, and a printable version.

€490 a year

Everything included. Minimum term 12 months, then one month's notice.

Your account works with a one-time email code. No password.

Secure checkout via Stripe · Right of withdrawal

Want to see the work first?

Free to read: a report, a worksheet, a factorsheet and a studysheet →

Or take the free newsletter: one email when there is something worth saying.

The evidence behind this sheet

19 factorsheets carry the studies for and against, each with how firm that evidence is.