Drupal Research & Evidence-Based Practice 3

Question 1

What does a statistically significant result mean in the context of Drupal UX research?

Accepted Answer

There is a low probability that the observed difference occurred by chance

Answer

Statistical significance (typically p < 0.05) means the probability that results occurred randomly is below an accepted threshold, justifying evidence-based decisions.

Question 2

In Drupal, which module family is best suited for implementing multivariate testing scenarios on landing pages?

Accepted Answer

AB Test or similar experimentation modules

Answer

Dedicated A/B or multivariate testing modules allow Drupal sites to serve different content variants and track conversion differences systematically.

Question 3

When researching accessibility compliance on a Drupal site, which standard should guide evidence-based remediation?

Accepted Answer

WCAG 2.1 AA

Answer

WCAG 2.1 AA is the internationally recognized accessibility standard and the benchmark used by Drupal's own accessibility team.

Question 4

Which Drupal tool helps developers collect performance benchmarks to make evidence-based caching decisions?

Accepted Answer

Devel module's query log and XHProf integration

Answer

Devel combined with XHProf provides per-request query counts and timing data, giving measurable evidence for where caching improvements matter most.

Question 5

What is the recommended evidence-based approach before removing a Drupal contributed module from a production site?

Accepted Answer

Audit dependent modules, run tests, deploy to staging, verify functionality, then remove from production

Answer

Removing modules without a staged, tested process risks breaking dependent functionality; a methodical audit and staging test provides evidence that removal is safe.

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Drupal Research & Evidence-Based Practice 3