Explain how you would conduct a study using the experimental method to investigate if people perform better on a spatial reasoning task in a peppermint-scented room compared to an unscented room. Justify your decisions as part of your explanation. You must refer to:

• use of an independent groups design
• how you would operationalise the dependent variable (DV) in a way that would produce quantitative data
• the control of one specific environmental variable.

You should use your own experience of practical activities to inform your response.