A cognitive psychologist is investigating whether environmental noise affects working memory capacity. One group of participants completes a digit span test while listening to loud cafe noise (75 dB75\text{ dB}75 dB), while another group completes the same digit span test in a silent room (0 dB0\text{ dB}0 dB).
Write a fully operationalised directional alternative hypothesis for this investigation.
186 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.