An agricultural scientist wants to conduct a field study to investigate whether smallholder farms using organic pest-management systems differ from those using conventional synthetic pesticide systems in relation to their soil-ecosystem health. In order to do this, he needs to consider how to measure his dependent variable and how to analyze the data that he collects.
Explain how the scientist might measure the dependent variable in this study.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.