Regardless of culture, most adult humans report experiencing similar
feelings such as anger, fear, humor, and joy. Such subjective emotional
states, however, are not universal. Members of some cultures deny
experiencing specific emo- tions such as fear or grief. Moreover, within
any culture, individuals differ widely in their self-reports of both the
variety and intensity of their emotions. Some people report a vivid
tapestry of positive and negative emotional experi- ences. Other people
report that a single emotion such as depression or fear totally
dominates their existences. Still others report flat and barren
emotional lives. Over the past 100 years, scientists have proposed
numerous rival explana- tions of why such large individual differences
in emotions occur. Various authors have offered anthropological,
biochemical, ethological, neurological, psycholog- ical, and
sociological models of human emotions. Indeed, the sheer number of
competing theories precludes a comprehensive review in a single volume.
Ac- cordingly, only a representative sample of models are discussed in
this book, and many equally important theories have been omitted. These
omissions were not intended to prejudice the reader in favor of any
particular conceptual frame- work. Rather, this selective coverage was
intended to focus attention upon the empirical findings that
contemporary theories attempt to explain.