In this article, we review recent developments in the study of emotional expression within a
basic emotion framework. Dozens of new studies find that upwards of 20 emotions are …

Much emotion research has focused on the end result of the emotion process, categorical
emotions, as reported by the protagonist or diagnosed by the researcher, with the aim of …

Summary Designed by biological [1, 2] and social [3] evolutionary pressures, facial
expressions of emotion comprise specific facial movements [4–8] to support a near-optimal …

As a highly social species, humans frequently exchange social information to support almost
all facets of life. One of the richest and most powerful tools in social communication is the …

The demands of both mental and physical activity are integrated with the dynamic control of
internal bodily states. The set of neural interactions that supports autonomic regulation …

The human smile is highly variable in both its form and the social contexts in which it is
displayed. A social-functional account identifies three distinct smile expressions defined in …

Since the turn of the twenty-first century, the psychology of emotion has grown to become its
own field of study. Because the study of emotion draws inspiration from areas of science …

Observation of newborn infants reveals a rather narrow range of emotional behavior. They
cry and show distress when pained, lonely, or in need of food and attention. They look …

Humans and great apes are highly social species, and encounter conspecifics throughout
their daily lives. During social interactions, they exchange information about their emotional …

Mimicry-based emotion contagion and social appraisal currently provide the most popular
explanations for interpersonal emotional convergence. However, neither process fully …