Which of the following is a main heading under the EAQ?

In the context of the Evidence Act Queensland (EAQ), the main heading "Discrediting own witness" refers specifically to the legal principles and rules that govern how a party may challenge the credibility of a witness they have called to testify. This heading is significant because it addresses the conditions under which a party can undermine the testimony of their own witnesses, which is generally more restricted than discrediting the opposing party's witnesses.

The focus on this heading illustrates fundamental evidentiary principles in trial practice regarding witness credibility and reliability. It covers aspects such as the circumstances that allow for contradiction or impeachment of one's own witness, and the impact this may have on the party's case. Understanding this concept is crucial for practitioners in the field as it directly affects trial strategy and witness management.

In contrast, the other options pertain to important areas of law but do not fall under the same classification in the EAQ. "Documentary evidence," while relevant, pertains more broadly to the admissibility and use of written or recorded materials. "Criminal Procedure" encompasses a range of procedural rules governing criminal cases, not specifically related to evidentiary headings. "Expert Testimony" relates to the admissibility and role of expert witnesses, which, although significant, is