1 Several psychological studies of sleep have employed the diary method. This is pretty self-explanatory, but look it up if you are not sure. I am sure you would find it interesting to keep a diary of daily (or evening) entries of your sleep patterns over a period of, say, 1 month. When did you sleep well; when did you sleep badly? Can you discern any consistent characteristics of the good and bad periods — for example, stress, success, tobacco or alcohol consumption (if these are relevant to you)? Use the table below to get you started.
2 The author states ‘The purpose of stages 1 and 2 (of sleep) remain largely a mystery’. Check through your textbooks or do an online search and see if you can find any suggestions for what these two stages might be for.
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