An educational psychologist is investigating whether a new interactive mobile application improves algebraic problem-solving skills in Year 12 students.
To ensure that their research hypothesis is scientifically testable, which of the following is an essential requirement?
The hypothesis must be directional, predicting that the interactive learning application will cause a positive change in student performance.
The independent and dependent variables must be operationalised to be clearly and objectively measurable.
The hypothesis must specify the chosen significance level (e.g., α=0.05\alpha = 0.05α=0.05) and the exact statistical test to be performed.
The hypothesis must be derived from an existing scientific theory that has already been proven to be true.
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.