There has been a time gap in what I have published in monograph form,
during which some very important and profound shifts have developed in
the way we can represent and analyse the sorts of data that human organisms
generate as they progress through their lives. In that gap I have been
fortunate enough to make contact with and exchange ideas with some people
who have chosen to explore nonlinear dynamics, and to see if the ideas
that are either pure mathematics or applications in various disciplines
other than psychology can be usefully explored as filters of behavioural
time series