A researcher investigated the effect of different white noise levels on concentration. Two groups of participants, younger adults (N=200N = 200N=200) and older adults (N=200N = 200N=200), were asked to complete a complex concentration task under different background noise conditions ranging from 30 dB to 90 dB.
The results are shown in Table 1 below.
Table 1: Decibel level of background white noise and task success
| 30 dB | 40 dB | 50 dB | 60 dB | 70 dB | 80 dB | 90 dB | |
|---|---|---|---|---|---|---|---|
| Number of younger adults who successfully completed the task (N=200N = 200N=200) | 10 | 45 | 135 | 180 | 140 | 55 | 5 |
| Number of older adults who successfully completed the task (N=200N = 200N=200) | 12 | 48 | 140 | 175 | 125 | 42 | 2 |
Explain one conclusion you can make using the data in Table 1.
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.