Overall Score: 12/22
IB Grade: 5
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Criteria A: Introduction
4/6
0
3
6
Criteria Strands
Excellent
Investigation aim and relevance
Excellent
Theory/model description and connection
Excellent
Hypothesis and variables
Criteria Feedback
- Clear and relevant investigation aim with explicit explanation of relevance to Grade-11 learners
- Accurate description of the multi-store memory model establishing theoretical foundation
- Fully operationalised hypotheses with clear identification of IV and DV
- Theoretical model description could be more deeply integrated with the hypothesis to improve logical flow
- Limited critical context—expansion on alternative memory frameworks would strengthen depth
Criteria B: Exploration
3/4
0
2
4
Criteria Strands
Excellent
Research design
Excellent
Sampling and participants
Excellent
Variables and materials
Criteria Feedback
- Use of an independent-measures design is well explained and justified (reducing order effects)
- Sampling technique and participant characteristics are clearly described and rationalised
- Controlled variables and materials are explicitly justified to isolate the IV
- Discussion of volunteer bias and its effect on internal validity is limited
- Ethical procedures (e.g., debriefing) lack full detail
Criteria C: Analysis
3/6
0
3
6
Criteria Strands
Excellent
Statistical analysis
Moderate
Graphical presentation
Excellent
Findings interpretation
Criteria Feedback
- Appropriate and accurate use of median, IQR, and Mann-Whitney U test with correct reporting
- Interpretation of statistical findings is linked to the hypothesis and conceptualised in terms of interference
- Graphical presentation has technical weaknesses (minimal axis labels, bar median not ideal for IQR data)
- Omitted effect-size calculation and outlier-identification criteria
Criteria D: Evaluation
2/6
0
3
6
Criteria Strands
Moderate
Findings discussion
Excellent
Strengths and limitations
Excellent
Modifications
Criteria Feedback
- Strengths and limitations are clearly stated, explained, and directly linked to internal/external validity
- Modifications are explicitly linked to identified limitations and justified
- Findings discussion is largely descriptive with limited critical analysis of theoretical implications
- Alternative models (e.g., working memory framework) are not considered in the evaluation