Since the invention of Bitcoin in 2009 the global cryptocurrency market has grown from nothing to a value of around US$2 trillion. From a price of US$1 in 2011, Bitcoin rose to an all-time high of more than US$63,000 in April 2021, and now hovers around the US$42,000 mark. Large fluctuations in cryptocurrency prices are common, which makes them a highly speculative investment. What kind of people are willing to take the risk, and what motivates them? We conducted a survey to find out. In particular, we wanted to know about the relationship between the so-called “dark tetrad” personality traits…

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