IB Biology SL Internal Assessment Example

The investigation is framed in a specific biological context with a clear population, variables, and outcome measure.

The hypothesis is linked to sensory and motor pathways, giving the study a relevant scientific rationale.

Several important controls are considered, including age range, testing environment, instructions, practice trials, and screening for sensory impairment.

The overall procedure is sequenced well enough that another reader can mostly follow how the study was carried out.

The repeated-measures structure should be stated more explicitly so the design is unambiguous.

Some design choices are not fully resolved, especially the fixed order of conditions and the use of different devices and software.

The justification for the tactile method is not described in enough detail to fully support replication.

Key technical details such as randomization, timing logic, and device settings are missing.

The raw data are presented in a clear table and organized consistently across participants and conditions.

The student processes the data beyond simple recording by calculating means, standard deviations, and inferential statistics.

The student includes uncertainty-related information and shows awareness that different measurements may have different timing limitations.

The processed tables and graph help the reader follow the progression from raw data to summarized results.

The analysis does not fully match the repeated-measures design, since the same participants were tested in all conditions.

Some calculations and formula presentation are not communicated precisely enough to verify confidently.

The treatment of uncertainty is only partly developed and does not clearly separate random variation, timing uncertainty, and systematic error.

The written interpretation of the pairwise comparisons is inconsistent with the table of results.