Preface
For almost as long as I can remember, I have always been interested in the
causes of political, economic, and other social behaviors, though it took me a
long time to realize that what I was most interested in had a name and formed
an academic field in its own right: “political psychology.” In fact, it was not
until I moved to the United States as a graduate student that I found what I was
looking for. I was raised in the British university system, and cannot recall the
term ever being used during my undergraduate years at Sheffield University
(though thankfully it is now widely taught in Britain). I had begun my higher
education as a student of economics. Rather naively believing that I would learn
something about the causes of human economic behavior from microeconom-
ics, I was dismayed to find that many economists simply assumed various things
to be true about human behavior—treating them as “givens”—and then used
these assumptions to build models of various sorts.
There is a very old joke about an engineer, a priest, and an economist who
have fallen down a cavernous hole. Naturally, they begin debating a way to get
out of this predicament, and after a little thought each comes up with a pro-
posal. The engineer says “let’s make footholds at various points by climbing on
one another’s shoulders, which will enable us to clamber out of the hole.” The
priest goes next, and not unexpectedly offers a more spiritual solution. “Let us
all join hands and pray to God. He will find an answer to our problem.” Then it
is the economist’s turn. He thinks a bit more for a moment, and then simply
says to the others, “assume a ladder!” The microeconomics teachers tried in
vain to fill my head with preference curves and shifting lines on graphs, based on
assumptions about human behavior (perfect information, the non-existence of
advertising, and so on) which they admitted were manifestly untrue. They
nevertheless recommended proceeding (after Milton Friedman) “as if” they
were true. This was definitely not what I was looking for, and I didn’t last long
at it. I didn’t want to assume anything about human behavior. I wanted to know
how people actually thought in the real world, and why.