Aim - To investigate if young people are more sarcastic than old people?
Identify the independent and dependent variables and fully operationalise? (4 marks)
You'd identify the IV and DV in the method of how the aim is tested and explain them in context
Unless you're supposed to be creating your own study, in that case decide how you'd test it, then explain the IV and DV in the context of your own method, e.g. the DV would be a difference in scores on a sarcasm questionnaire etc.
I'm pretty awful at research methods myself though
IV= Age (Put into categories. For example, Young is someone who is 25 or younger. Old is someone who is 60 or older.)
DV= How sarcastic they are (Operationalising it by looking for behavioral categories related to sarcasm)
I wouldn't take my word for it though, haha.