Dr. Aris Thorne is conducting an investigation to compare the impact of biophilic acoustic environments (natural forest soundscapes) and standard synthetic white noise on the selective attention of air traffic control trainees during simulated shifts. After a 4-hour simulated shift, he measures the trainees' focus using the d2 Test of Attention, which yields a concentration performance (CP) score.
State a fully operationalised non-directional (two-tailed) alternative hypothesis for Dr. Thorne's 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.