Assessment Overview & Difficulty Verdict

The examination series demonstrates standard Cambridge 9990 rigor, maintaining a moderate-to-high difficulty level (3.4 / 5.0). The distribution of marks demands equal proficiency in direct factual recall, scenario application, and balanced methodological critique. Strong candidates excel not by providing generic textbook summaries, but by anchoring their answers firmly within the precise procedural parameters and data findings of the named studies.

Where the Marks Are Won and Lost

  • Procedural Precision in Core Studies: In Paper 1 and Paper 2, precise knowledge of apparatus, sampling characteristics (such as the exact carriage demographics in Piliavin et al. or EEG operational parameters in Dement & Kleitman), and quantitative metrics distinguishes top-band scripts from mediocre responses.
  • Evaluation with Contextual Depth (AO3): High-tariff 8-mark comparison questions (e.g., comparing Milgram and Piliavin) and 10-mark evaluation essays (such as evaluating Andrade or Becker et al.) require thorough contextualisation. Examiners explicitly penalise isolated methodological points that lack direct integration with the specific procedures under review.
  • Applied Study Design (AO2): In Paper 2 (Question 9) and Paper 4 (Section B), full marks in the 10-mark planning tasks require comprehensive coverage of all four syllabus-mandated design features (IV/DV operationalisation, experimental controls, design structure, and ethical safeguards).

Examiner Pitfalls & Critical Advice

Examiners consistently note several common traps across papers:

  • Conflating Methodology with Ethics: When asked for methodological strengths or weaknesses, introducing ethical commentary (e.g., lack of informed consent) yields zero marks.
  • Superficial Evaluation Points: Assertions such as 'quantitative data is easy to analyse' or 'it lacks generalisability' without reference to sample composition or measurement scales fail to reach beyond Level 2.
  • Overlooking Named Issues in Section B Essays: Omitting mandatory named issues (e.g., psychometrics, reductionism vs. holism) caps essay marks at a maximum of 4 out of 10.

Preparation Strategy & Predictive Focus

Candidates should focus revision on dual-feature evaluations and structured 10-mark planning templates. With significant emphasis placed on clinical, consumer, and organisational applications across Papers 3 and 4, students must practise writing operationalised hypotheses, identifying specific confounding variables in applied settings, and contrasting individual versus situational determinants.