Elena investigated the effectiveness of a new mindfulness application on reducing short-term stress levels. She gathered her participants from her university campus using an opportunity sampling technique.
Elena compared two different interventions. She used an independent groups design with two conditions. In Condition A, participants used a guided-breathing mindfulness app for 10 minutes, and in Condition B, participants spent 10 minutes reading a quiet article about stress theory.
Explain one strength of Elena using an independent groups design in her investigation.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.