How does intensive musical training affect the brain's ability to filter out background noise in complex auditory environments? Are there distinct differences in speech-in-noise perception among teenagers who have undergone formal training compared to those who have not? To investigate this, cognitive neuroscientists plan to conduct an experimental study using speech-in-noise tests. The researchers decide to select a stratified sample of 80 teenagers aged 13 to 16 from five different regional youth orchestras and secondary schools, ensuring equal representation of age, musical experience (none, 1–3 years, 4+ years), and socio-economic background.
Justify the choice of this sample for this investigation.
201 exam-style questions on OCR A Level Psychology Planning and conducting research. Each one has a worked solution and a mark scheme showing where the marks go.