The syllabus specifically asks for Bibb and Darley's
1968 model which has 3 stages. There is a very similar model which is 5 stage but this is the textbook's mistake not QCAA's.
The three stages are:
- noticing the situation
- interpreting the situation as requiring help
- taking responsibility for the situation
This is the model shown in the ATAR Notes courseguide if you've read that.
I'm guessing you used the
1970 5 stage model which is:
- recognising the situation
- interpreting it as an emergency
- taking responsibility
- deciding to act
- actually helping
(haven't checked the exact wording on this but that's the gist of it)
I imagine QCAA will make a note of this in the examiner's report. No guarantees, but I suspect that this year you would still get at least some of the marks, especially given how similar the models are.
The scenario they would be expecting students to discuss is the seizure recording one, as per the QCAA psychology teaching resources annotated bibliography.
Darley, JM & Latane, B 1968, ‘Bystander intervention in emergencies: Diffusion of responsibility’,
Journal of Personality and Social Psychology, vol. 8, no. 4, pp. 377–383, doi:10.1037/h0025589.
Even if you picked a different situation you may be able to gain marks provided that you discussed the experiment appropriately.
This might not be what you had wanted to hear but QCAA gave appropriate and clear instructions on what they were expecting and something has gone wrong with the textbook that they picked the wrong thing
In the past VCAA has been generous at times when textbooks have made mistakes and students have answered exams accordingly so fingers crossed that QCAA will be understanding for you.
Definitely don't give up hope for your marks
Edit: typo