The idea of bringing emotions of the user as an input for
computer devices is not new, e.g. [4]. The notion
important for understanding this relation is the
information reduction. Emotions select the information
that comes to peoples perceptual system and thus limit
the options among which attention will choose.
Consequently, one may say that aect directs attention
toward some information and suppress those which are
incongruent with current emotional state, e.g. [6].
Moreover, positive aect broadens visual eld resulting in
better recognition of stimuli presented in peripheral
regions [19]. In the context of HCI Broaden and Build
theory [3] claims that positive emotions enhance creative,
exible, ecient thinking, and work productivity [15