Google is currently testing displaying six "People Also Ask" (PAA) results by default, an increase from the usual four. This change was observed and shared on a SERP Alerts channel, highlighting that while testing the number of PAA results shown by default isn't new, this is the first time in recent memory that six results are being tested.
Typically, Google dynamically expands to show more PAA results after clicking on one. However, the standard has been to display only four results initially, and now Google is testing a default of six.
