A climatologist is conducting a study to determine the effect of reforestation on local summer maximum temperatures in a semi-arid region. Extensive climate simulations and historical data from similar regions consistently show that increased tree cover reduces local temperatures through evapotranspiration.
State whether the hypothesis for this study should be directional or non-directional, and explain your answer.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.