Design
The study used a mixed design. Participants were randomly divided over 2 conditions: negative mood and neutral mood .Within these conditions, participants were divided into two groups for the post-conditioning saliva measurement and taste test. Half of the group in each mood condition received these measurements in presence of the CS+ (from here on called ‘Negative CS+’ and ‘Neutral CS+’), while the other half received them in presence of the CS− .Mood, expectancy to receive food and desire to eat were within-subject variables, measured 8 times for each participant .Saliva production was an additional within-subject variable, measured at baseline and at the end of the conditioning procedure (for half the participants in presence of the CS+, for the other half in presence of the CS−).