Security, Integrity, and Fairness
This domain covers protecting the exam's meaning and ensuring fair treatment of all candidates. Test security has three fronts: item security (protecting item content from exposure and memorization), test-administration security (proctoring, identity verification, secure delivery environments), and data security (protecting candidate records). Concepts to know: item exposure (how often an item is seen), item harvesting/braindumping (candidates publishing recalled items), and compromise (an item that has leaked and must be retired). A confidentiality agreement is the candidate's contractual obligation; violating it is an integrity issue, not merely a courtesy breach.
Test integrity concerns the validity of results: cheating, impersonation, unauthorized materials, and collusion. Detection includes proctor observation, response-time analysis, and answer-pattern analysis (e.g., unusual similarity between candidates' responses). Sanctions typically follow a due-process sequence: allegation, notice, opportunity to respond, decision, appeal.
Fairness has two meanings: equitable access (accommodations, accessible formats, clear communication) and absence of bias (items that don't advantage or disadvantage groups for construct-irrelevant reasons). Differential item functioning is the statistical flag; fairness review is the judgment step. Note that fairness does not mean identical treatment - accommodations deliberately differ to preserve equal opportunity.
Traps: (1) Treating a security violation as automatically a fairness violation - they are distinct. (2) Assuming accommodations give an advantage; they remove a barrier. (3) Skipping due process - sanctions without notice and appeal are themselves a policy violation. (4) Confusing exposure (an item is seen often) with compromise (an item has leaked).
Rule of thumb: security protects the exam; fairness protects the candidate; integrity is the bridge. Worked example: a candidate reports recalled items online - that's an item-security breach and a confidentiality violation, handled through the integrity process.