Biological validity of information in the public domain (internal)
Internal 3 credits Validity Evidence Sources Claims Socio-scientificAS 91154, 3 credits. Take a claim from the media or advertising and judge whether the biology behind it stands up. The skill is separating what the evidence supports from what the source asserts.
1 Reading the notation
Three separate things at Merit — reasons, consequences, vested interest — and a two-part definition of validity itself.📖 Terms the schedule grades you on
4 terms- Analyse (Achieved)
- Recognise/describe features as accurate, inaccurate or biased; identify the purpose of the information.
- Analyse in-depth (Merit)
- Give reasons why/how each feature is accurate, inaccurate or biased; name consequences; explain how vested interest is conveyed.
- Comprehensively analyse (Excellence)
- Prioritise aspects by significance in context; evaluate the overall impact on the public.
- Biological validity
- Scientifically accurate information used in an unbiased way to convey a biological idea.
2 Judging the source
Who produced it, for whom, and what interest they have in the conclusion.What to check about a source
- Peer review, or an identified author with relevant expertise.
- Evidence actually cited, not just asserted.
- A declared funding source, and whether it is selling something.
- How the vested interest is conveyed — language, omission, or testimonial.
3 Finding the flaw
The recurring patterns behind most invalid public-domain biology claims.| Ask | What a weak claim looks like |
|---|---|
| What exactly is claimed? | Vague — "supports wellness", "boosts immunity" |
| What biological mechanism would make it true? | None stated, or one that contradicts known biology |
| What evidence is offered? | A testimonial, or a study that measured something else |
| Was there a control group? | No comparison, so change cannot be attributed |
| Who is the source, and who funded it? | The seller, with no independent evidence |
| Does the evidence support THAT claim? | A cell-culture result presented as a human outcome |
The three-part test that catches most invalid claims: which substance, by what pathway, with what evidence? A claim failing any one of those is not biologically valid.
4 Reaching a prioritised verdict
Excellence is a synthesis judgement, not a longer list. ✕Treating every flaw as equally important
Achieved and Merit answers can list flaws one after another with equal weight. Excellence PRIORITISES — say which inaccuracy or bias does the most damage to the public's understanding, and why, before evaluating the piece's overall impact.Practice
Recall it first, then use it — testing yourself builds the memory, where rereading the notes above only feels easier.
Recall and application shuffled together — you have to work out what each item wants before you can answer it, which is the part the exam actually tests. Both kinds feed the same spacing schedule, so anything you miss comes back sooner.
Say the answer out loud before flipping — that attempt is where the learning happens, even when you get it wrong.
Exam-style only. Instant feedback, shuffled each attempt, best score saved on this device.