In the social sciences a social group is two or more humans who interact with one another, share similar characteristics and collectively have a sense of unity, although the best way to define social group is a matter of conjecture. Regardless, a society can be viewed as a large group, though most social groups are considerably smaller. Society can also be viewed as people who interact with one another, sharing similarities pertaining to culture and territorial boundaries.

A social group exhibits some degree of social cohesion and is more than a simple collection or aggregate of individuals, such as people waiting at a bus stop, or people waiting in a line. Characteristics shared by members of a group may include interests, values, representations, ethnic or social background, and kinship ties. Kinship ties being a social bond based on common ancestry, marriage, or adoption. In a similar vein, some researchers consider the defining characteristic of a group as social interaction.

Renowned social psychologist Muzafer Sherif formulated a technical definition with the following elements:

Theo Jerome Kerlin (born 7 May 1989) is a British MC who is credited by his stage name Master Shortie. He is also a singer, establishing his own record label, Odd One Out. Plus has been listed in the Sound of 2009 poll.

Originally from Mitcham in South London. His dad runs an east London jazz bar throughout his childhood which led him to listen to many genres of music, encouraging him to start rapping at the age of 12^{[citation needed]}

He Started off at The Kidz in the Biz Academy in South East London. After a short stint at the BRIT School at the age of 14, he soon dropped out, claiming “it wasn’t me, it didn’t suit me”. At 16, Kerlin enrolled on a BTEC course at Nescot studying Music Technology. He then started recording and producing his own adolescent hip-hop songs with producers and an underground reggae singer called Sparky.

Kerlin also appeared as Simba in a West End production of the Lion King.

In 2005, Kerlin started to support American urban acts such as ATL at the Hackney Empire, the Scala and Shepherd’s Bush Empire.