H. Bless et al., MOOD AND THE USE OF SCRIPTS - DOES A HAPPY MOOD REALLY LEAD TO MINDLESSNESS, Journal of personality and social psychology, 71(4), 1996, pp. 665-679
The authors tested whether happy moods increase, and sad moods decreas
e, reliance on general knowledge structures. Participants in happy, ne
utral, or sad moods listened to a ''going-out-for-dinner'' story. Happ
y participants made more intrusion errors in recognition than did sad
participants, with neutral mood participants falling in between (Exper
iments 1 and 2). Happy participants outperformed sad ones when they pe
rformed a secondary task while listening to the story (Experiment 2),
but only when the amount of script-inconsistent information was small
(Experiment 3). This pattern of findings indicates higher reliance on
general knowledge structures under happy rather than sad moods. It is
incompatible with the assumption that happy moods decrease either cogn
itive capacity or processing motivation in general, which would predic
t impaired secondary-task performance.