How do you get full marks for evaluation in the 16 or 24 mark questions?

To gain full evaluation marks in a psychology essay you have to have A02 and A03 marks. A02 marks would be other studies that you have learnt about in psychology that contradict or support your original (factual, A01) point. To gain the elusive A03 marks you have to say how this has affected the orignial study (reducing internal or external validity) or what this means for future studies. You could also include points such as the research or study is deterministic and explain how that would reduce its internal validity or replicability. These extra points are what my school knew as IAD points. These IAD points included wholism vs reductionism, nature vs nurture, alpha or beta bias, free will vs determinism. To gain full marks in an essay you would have to include 3 of these debates interlinked into your evaluation.