Facial expression responsible for controlling the expression differ in each case. Voluntary facial expressions are often socially conditioned and follow a cortical route in the brain. Conversely, involuntary facial expressions are believed to be innate and follow a subcortical route in the brain. Facial recognition is often an emotional experience for the brain and the amygdala is highly involved in the recognition process. The eyes are often viewed as important features of facial expressions. Aspects such as blinking rate can possibly be used to indicate whether a person is nervous or whether he or she is lying. Also, eye contact is considered
Emerging adulthood and early adulthood adolescence but not yet entered adulthood. A number of studies have shown that regarding people in their late teens and early twenties in the United States, demographic qualities such as completing their education, finding a career, getting married, and becoming parents are not the criteria used in determining whether they have reached adulthood. Rather, the criteria that determine whether adulthood has been reached are character qualities, such as being able to make independent decisions and taking responsibility for one's self. In America, these character qualities are usually experienced in the mid to late twenties, thus confirming that emerging adulthood is