Extraversion
Patik would likely score high on the extraversion factor as he is sociable, outgoing, and enjoys interacting with others.
Sociable
They are VERY sociable animals. So they can get depressed.
It can be correct to say you are always welcomes. It is correct when finished with "in my home or at my place of business."
welcome to my home
In the sentence "your cousin is always a welcome visitor," the word "welcome" is being used as an adjective to describe the type of visitor your cousin is.
Friendship is always a sweet responsibility, never an opportunity
to welcome them inside.
always welcome (here)
no
A pleasing personality is a personality of a person who is pleasant to be in company of. Characteristics of a pleasing personality include good manors and good morals. A person with a pleasing personality is selfless, and is always nice to other people.
Sometimes but no always because you don't want to be going out with someone who is really good looking but has the personality of a door handle.