This dissertation consists of three essays that have a common focus on the econometrics of survey expectations data. Such data play a crucial role in economics. First, as most decisions depend on expectations, these data facilitate a better understanding of economic dynamics. Second, survey data...

Multifractal processes have recently been proposed as a new formalism for modelling the time series of returns in finance. The major attraction of these processes is their ability to generate various degrees of long memory in different powers of returns - a feature that has been found in...