Numerous studies demonstrate that the rhesus monkey is an excellent species with which to
investigate mechanisms underlying human emotion and psychopathology. To examine the …

The authors examined the hypothesis that rhesus monkeys with extreme right frontal
electroencephalographic activity would have higher cortisol levels and would be more fearful …

To survive, primates must detect danger in time to activate appropriate defensive behaviors.
In this study, the defensive behaviors of infant rhesus monkeys exposed to humans were …

Temperamentally anxious individuals can be identified in childhood and are at risk to
develop anxiety and depressive disorders. In addition, these individuals tend to have extreme …

Anxious temperament (AT) in human and non-human primates is a trait-like phenotype evident
early in life that is characterized by increased behavioural and physiological reactivity to …

Infant rhesus monkeys respond to separation from their mothers with a dramatic increase in
vocalizations and activation of autonomic and pituitary-adrenal systems. Using the mother-…

BACKGROUND: A key to successful adaptation is the ability to regulate emotional
responses in relation to changing environmental demands or contexts. METHODS: High-resolution …

In humans, and non-human primates, reunion following a separation results in a positive
emotional state, and an increase in affiliative behaviors. To examine the role of opiate systems, …

Some individuals are endowed with a biology that renders them more reactive to novelty and
potential threat. When extreme, this anxious temperament (AT) confers elevated risk for the …

Early theorists (Freud and Darwin) speculated that extremely shy children, or those with
anxious temperament, were likely to have anxiety problems as adults. More recent studies …