Thus, the calculator-abacus was invented. In Chinese history, the origin of the abacus can be traced back to the Spring and Autumn Period, 600 B.C., and it was widely used before the invention of Arabic numerals appeared in the world. The abacus has proven to be one of ancient Chinaâs greatest inventions. Before the abacus was invented, people used small wooden sticks as calculation chips to make calculations. (Image: Derrick Coetzee via Flickr/ CC0 1.0))
Social anxiety disorder, also called social phobia, is an anxiety disorder in which a person has an excessive and unreasonable fear of social situations. Anxiety (intense nervousness) and self-consciousness arise from a fear of being closely watched, judged, and criticized by others.
Social anxiety disorder (social phobia) is a persistent and overwhelming fear of social situations. It's one of the most common anxiety disorders. Social anxiety disorder is much more than shyness. It can be intense fear and anxiety over simple everyday activities, such as shopping or speaking on the phone.s with many mental health conditions, social anxiety disorder is most probably the result of a combination of genetic and environmental factors. Anxiety disorders often run in families, so you're more likely to have social anxiety disorder if a close family member is affected.