IB Psychology SL Internal Assessment Example

The student stated a clear investigation aim and made the comparison between Mozart and EDM easy to follow.

The student's theoretical explanation of arousal and attention is coherent and clearly connected to the predicted outcome.

The student identified the main variables correctly and showed awareness of both the experimental and null hypotheses.

The relevance of the investigation could be explained more explicitly so the reader understands why this comparison matters.

The dependent variable should be operationalised more precisely in the hypothesis.

Duration and volume were treated as IVs even though they function as controlled variables.

The student clearly identified the independent-measures design and explained why it was suitable for avoiding carryover and order effects.

The student described the sampling method and participant group in enough detail for the reader to understand who took part.

The student included several relevant controls and materials, such as the tracks used, the classroom setting, and the fixed testing procedure.

The choice of materials is not fully justified in relation to the hypothesis.

The implications of class-based allocation and language fluency differences are not developed enough.

Some controls are described, but not all are convincingly explained as helping to isolate the intended variable.