research in consumer behavior dealing with affect has exploded, making it one of the field's central research topics. Within psychology more generally, Schimmack and Crites (2005) located 923 references to affect between 1960 and 1980 and 4,170 between 1980 and 2000. Since research on affect has become more specialized, this chapter will concentrate on the various ways affect influences judgment and choice rather than on broader and historical perspectives.These will include the role of affect in information retrieval, differential processing of affectively colored information (including the role of affect in strengthening mental associations and memory consolidation), how and when affect provides information that influences judgments and decisions, and the motivational role of affect in guiding behavior and signaling the need for changes in vigilance, intensity, and direction. We begin, however, with some essential definitions.
THE NATURE AND STRUCTURE OF AFFECT On Affect: Feelings, Emotions, and Moods
What Affect MeansThere is still some carryover from the use of the term "affect" to also refer to what is, in essence, the evaluative aspect of attitudes. This stems from the classic tri-partite depiction of attitudes: cognitive, affective, and conative (see Eagly & Chaiken, 1993) and a failure to adequately differentiate between evaluative measures (e.g., favorable/unfavorable) and antecedent or subsequent processes, which might be feeling-based. Consistent with most recent 3 scholarly discussions, we reserve the term "affect" to describe an internal feeling state. One's explicit or implicit "liking" for some object, person, or position is viewed as an evaluative judgment rather than an internal feeling state. As Russell and Carroll (1999a) put it:"By affect, we have in mind genuine subjective feelings and moods (as when someone says, 'I'm feeling sad'), rather than thoughts about specific objects or events (as when someone calmly says, 'The crusades were a sad chapter in human history')." This chapter maintains the separation of affect as a feeling state that is distinct from either liking or purely descriptive cognition. So when we use the term "affect" to describe stimuli, internal and overt responses, it is only in relation to evoked feeling states. Imagine, in contrast, an advertisement whose words or images connote a happy (i.e., successful) outcome.Affective processes cannot merely be assumed. Alternative explanations (e.g., the advertised product seems likely to produce favorable outcomes) for so-called "affective" influences on subsequent evaluations and behavior must be ruled out before implicating affect. These include semantically associated changes in object meaning or construct accessibility.This definition also raises both philosophical and empirical questions about whether such a feeling state must be consciously experienced or whether we can be unaware that we are experiencing affect. Research where subliminally presented smiling or frowning faces were used to prime affect (outside of awarenes...