Method and materials
Participants
There were 48 participants (24 women). None of these healthy
women and men was currently dieting or had a history of disor-
dered eating. They were recruited via advertisements placed on
noticeboards around the University of Bristol and by word of mouth.
The advertisements were headlined ‘Your liking for pizza’ and the
incentives offered for participation were free pizza to eat and the
opportunity to win up to £5. All participants who started the study
completed it.
Design
The participants were randomised to a group of 32 (meal con-
sumed) and a group of 16 (no meal consumed), with the constraint
that within each group there would be equal numbers of women
and men. The groups differed as to whether or not they received a pizza meal between the first and second set of hunger, liking and reward measures (see below).