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ScientificAmerican: Kognitiva funktioner varierar med säsongerna

This research is particularly relevant as it relates to groups of people who are susceptible to the seasons, including those who suffer from SAD (and mental illnesses such as bipolar disorder and schizophrenia, which sometimes have shown seasonal fluctuations as well), a link that has recently come under contention. Last month in Clinical Psychological Science researchers from Auburn University at Montgomery published the results of a population-based study questioning whether there is any validity to linking major depression with seasonal variation.

“It’s difficult to establish seasonality,” Vandewalle says, “but here in our study we had the chance to strictly control protocol for almost five days, so I’m really confident in our results.”