The investigators recognised an event that affects everyone's sleep: when the clocks go forward for Daylight Saving Time. Prior evidence suggests we lose on average 40 minutes of sleep per night following the switch, as our body rhythms struggle to adjust.
Good parenting requires psychic resources. Complex decisions must be made. Sacrifices must be made in the moment. This is hard for anyone, whatever their income: we all have limited reserves of self-control, and attention and other psychic resources. ...
Q. Is willpower a single commodity (so to speak), or is there, as I suspect, a one type of willpower for, say, dieting, another one for academic study, another for this, another for that? -AaronS
A. No, there’s just one single resource (or commodity). There’s one source of mental energy for resisting temptation and performing other acts of self-control, and this willpower is also depleted by making decisions. What you experience may reflect the fact that willpower is limited and so people have to allocate it: they use it at the office to work effectively and diligently, but have messy homes and are short-tempered in the evening. Or people who show wonderful self-control at dealing with personal relationships but can’t seem to meet their deadlines.