17. Inferences from Silence and Other Conduct
Lies, failure to mention facts, account for objects or presence, and failure to testify.
How to study for BSB Criminal Litigation
Prepare for a closed-book assessment by linking every power, gateway, burden, procedure and appellate route to its place in the criminal case.
Core concepts
Concept 1
A lie may support guilt only through a properly reasoned route and an appropriate Lucas direction where the prosecution relies on it as evidence of guilt.
Exam cue: Identify the precise silence provision and the occasion on which the defendant was questioned or invited to account.
Concept 2
Statutory inferences may arise from failure to mention later-relied facts or to account for objects, marks or presence when the legal safeguards are satisfied.
Exam cue: Check caution, legal advice, special warning and whether an answer could reasonably have been expected.
Concept 3
The defendant's failure to testify may support an inference only through the section 35 framework and after proper advice about the consequences.
Exam cue: Distinguish using a lie to reject an explanation from using it as positive support for guilt.
Risk pitfalls and guardrails
Treating silence alone as capable of proving guilt.
Guardrail: Do not import a current-law change into the assessment merely because it post-dates the syllabus cut-off; use the latest BSB-issued syllabus or amendment for exam scope.
Drawing an inference where the statutory warning or other safeguard was missing.
Guardrail: Do not import a current-law change into the assessment merely because it post-dates the syllabus cut-off; use the latest BSB-issued syllabus or amendment for exam scope.
Giving a Lucas direction whenever a defendant says something the jury might disbelieve.
Guardrail: Do not import a current-law change into the assessment merely because it post-dates the syllabus cut-off; use the latest BSB-issued syllabus or amendment for exam scope.
Memory anchors
Lucas lie
Before using a lie as support for guilt, exclude innocent reasons and ensure it is deliberate and material.
Section 34
A later-relied fact omitted when questioned may support an inference if the statutory conditions are met.
Sections 36 and 37
Special warnings govern failures to account for objects, marks or presence.
Section 35
Failure to testify may support an inference after the defendant is properly advised and fit to give evidence.
No conviction on silence alone
An inference can support other evidence but cannot replace a prosecution case.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
During a cautioned police interview, a suspect fails to mention an alibi later relied on at trial. Which provision may permit an inference?
For section 34, is it enough that the defendant remained silent about any topic?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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