For each of the core studies, you should be able to show an understanding of:
• the psychology that is being investigated
• the background to that particular study
• the aim(s) of the study
• the procedure of the study, including as appropriate, the research methods used, sample size and
demographics [if known] and sampling technique [if known]), experimental design, controls, question types,
tasks, measured and manipulated variables
• ethical issues regarding the study
• the results of the study, including key quantitative and qualitative findings
• the conclusion(s) the psychologist(s) drew from the study
• the strengths and weaknesses of all elements of the study.
Candidates should be able to:
• describe and evaluate the research methods used
• apply the findings of the study to the real world
• consider how the study relates to psychological issues and debates

The issues and debates considered at AS Level are:
• the application of psychology to everyday life
• individual and situational explanations
• nature versus nurture
• the use of children in psychological research
• the use of animals in psychological research.

Source: https://www.cambridgeinternational.org/Images/254186-2018-2020-syllabus.pdf