Hmmmm … as a Psychologist, I’d have to say that a lot of what you write about is Psychology not Economics; the latter may be the empirical substrate but the subject of your pieces is frequently (if not exclusively) the former — Behavioural Economics indeed … or, is it really just Psychology with a focus on economic behaviour rather than neurolobiology or personality theory, for instance?
I think what I write is mostly about both disciplines, although they both cover many aspects that I never write about. Economics (especially microeconomics) seeks to describe how we choose between mutually exclusive options — how we make trade-offs. And that is not just a matter of cost-benefit analysis, but about weighing up material and non-material utility, acting in accordance with belief, using heuristics, and indeed making a-rational choices. Arguably this should belong to micro-economics (and to some extent it does), but it is also very much a matter of psychology.
And to what end do you study these economic behaviours? If it’s in order to understand human activity rather than simply how money flows then you’re primarily a Psychologist. :)
Perhaps, but it is the trading off that fascinates me most (and which I think helps understand and describe behaviour quite well) — have a look at We are all economists, my first Medium piece. Economics is not just about money flows, but also about time, attention, reputation, social status etc: they can all be traded, and your stock in each of them can be affected by your choices.