To analyze whether stock-market prices follow a random walk, the algebraic sign of their returns has been compared with a coin toss, which is a prominent example for a Bernoulli trial with equiprobable outcomes. Like coin tosses, signed returns lend themselves for a simple runs test for...

To analyze whether stock-market prices follow a random walk, the algebraic sign of their returns has been compared with a coin toss, which is a prominent example for a Bernoulli trial with equiprobable outcomes. Like coin tosses, signed returns lend themselves for a simple runs test for...

Consider two independent random walks. By chance, there will be spells of association between them where the two processes move in the same direction, or in opposite direction. We compute the probabilities of the length of the longest spell of such random association for a given sample size, and...

Increasing the share of women in politics is regularly promoted as a means of reducing corruption. In this paper, we look for evidence of a gender gap in dishonesty among elected representatives, as well as how this changes with time in office. Based on a sample of 356 inexperienced and...

Increasing the share of women in politics is regularly promoted as a means of reducing corruption. In this paper, we look for evidence of a gender gap in dishonesty among elected representatives, as well as how this changes with time in office. Based on a sample of 356 inexperienced and...