Follow a PEEL structure. For example, from my notes:
P: One strength of the multi-store model of memory is that there is naturalistic case study research evidence from patients with neurological damage that supports the model.
E: For example the patient HM (studied by Scoville and Milner in 1955), who underwent surgery to decrease the symptoms of his epilepsy where his hippocampus was removed, was still able to form new short term memories but was unable to form new long term memories (he thought the date was the same as when he had surgery: 1953).
E: This suggests that the short term memory store and the long term memory store are located in different parts of the brain since the stores were affected differently by the surgical removal of his hippocampus.
L: Therefore the multi-store model of memory is credible since the model claims that the short term memory store and long term memory store are separate stores, aligning in the findings from the case study of HM.
To get high marks you need specifc evidence (names, dates, quantitive data) that is fully elaborated on (in the explanation part of the peel). In explanation you fully explore what this evidence means, then in the therefore you show the implications of the explanation on the theory/study in question, while linking to your point at the start of the paragraph. To find the info for these evaluations use the pdf essays online from tutor 2u (however they have been wrong in the past e.g. the multi-store essay said that the duration of short term memory was 20-30 seconds when it’s 18-30 seconds). Also the green hair girl textbook is very helpful but some evaluations are lacking imo so I use a combo of both this and tutor 2u essays and it’s usually enough to get 4 full PEELs for each possible 16 marker.