A need is something that is necessary for organisms to live a healthy life. Needs are distinguished from wants because a deficiency would cause a clear negative outcome, such as dysfunction or death. Needs can be objective and physical, such as food, or they can be subjective and psychological, such as the need for self-esteem. On a social level, needs are sometimes controversial. Understanding needs and wants is an issue in the fields of politics, social science, and philosophy.

To most psychologists, need is a psychological feature that arouses an organism to action toward a goal, giving purpose and direction to behavior.

The most widely known academic model of needs was proposed by psychologist Abraham Maslow. In his theory, he proposed that people have a hierarchy of psychological needs, which range from security to self-actualization. However, while this model is intuitively appealing, it has been difficult to operationalize it experimentally. It was further developed by Clayton Alderfer.

Aaron Michael Paul (born August 27, 1979) is an Emmy Award winning American actor and singer. After appearing in several roles in American television, including a recurring role on the HBO series Big Love, Paul came to prominence in 2008 for his critically acclaimed role in the AMC series Breaking Bad as Jesse Pinkman. Paul won an Emmy Award for Outstanding Supporting Actor in a Drama Series for his role in the series.

Paul was born Aaron Paul Sturtevant in Emmett, Idaho. He attended Centennial High School in Boise, Idaho.

Early in his career, Paul starred in videos for the band Korn, for their song "Thoughtless", and Everlast, for his song "White Trash Beautiful". He was also featured in television commercials for Juicy Fruit and Corn Pops.

Paul has appeared in the films Whatever It Takes (2000), Help! I'm a Fish (2001) (voice only), K-PAX (2001), MTV's TV Movie Wasted (2002), National Lampoon's Van Wilder (2002), Perfect Opposites (2004), Bad Girls From Valley High (2005), Choking Man (2006), Mission: Impossible III (2006), The Last House on the Left (2009) among others. He also starred in the 2010 web released Funny or Die short Weird: The Al Yankovic Story as "Weird Al" Yankovic.Smashed, a film in which Paul stars, will be one of the official selections for the 2012 Sundance Film Festival.

Adam Richard Wiles (born 17 January 1984), better known by his stage name Calvin Harris, is a Scottish DJ, singer, songwriter, and record producer. His gold-selling debut album, I Created Disco, was released in 2007 and contained the top ten singles "Acceptable in the 80s" and "The Girls". His second studio album, Ready for the Weekend (2009), reached number one in the UK Album Chart and includes the chart-topper "I'm Not Alone", the UK top five hit "Ready for the Weekend", and the singles "Flashback" and "You Used to Hold Me".

A remix album titled L.E.D. Festival was released in July 2010 as a free album in the August issue of Mixmag. Harris is currently working on his third studio album—due for release in 2012—which has produced the singles "Awooga", "Bounce", "Feel So Close", and "Let's Go". He has written and produced records for other recording artists including Kylie Minogue, Sophie Ellis-Bextor, Dizzee Rascal, Rihanna (on the international chart topper "We Found Love"), and Kesha.

Elena Jane Goulding (born 30 December 1986), known professionally as Ellie Goulding, is an English singer-songwriter. In 2010 she became the second artist to both top the BBC's annual Sound of... poll and win the Critics' Choice Award at the BRIT Awards in the same year, following Adele's win of both in 2008. After signing to Polydor Records in 2009, she released her first EP in 2009, An Introduction to Ellie Goulding, followed by her debut studio album Lights in 2010. Her album debuted at number one on the UK Albums Chart and has sold over 650,000 copies in the UK. "Lights" was released in America March 8th 2011, where the title track has been certified platinum by the RIAA (excess of 1 million units sold) .

Goulding is a soprano, and her musical style has been compared to that of Kate Nash, Meiko, Lykke Li and Tracey Thorn.

Goulding was born and brought up in a small town near Hereford, Herefordshire, the second of four children. She began playing the clarinet at the age of nine, and at 14 began learning guitar. She attended Lady Hawkins' School in Kington, where she won a main part in a school production, the Wizard Of Oz, as the scarecrow. She started songwriting at the age of 15 and while in college she won a singing competition.

Ken Block (born November 21, 1967, in Long Beach, California) is a professional rally driver with the Monster World Rally Team. Block is also one of the co-founders and recently appointed Chief Brand Officer of DC Shoes. Block has also competed in many action sports events including skateboarding, snowboarding, and motocross.

In 2005, Ken Block began his national rallying career with the Vermont SportsCar team. Vermont SportsCar prepared a 2005 Subaru WRX STi for Block to compete. His first event of the rallying season was Sno*Drift, where he ended up finishing seventh overall and fifth in the Group N class. During the 2005 season, Block had five top five finishes and placed third overall in the Group N class and fourth overall in the Rally America National Championship. At the end of his first rallying year, Ken Block had won the Rally America Rookie of the Year award.

In 2006, Ken Block along with his DC rally teammate Travis Pastrana signed a new sponsorship deal with Subaru. Through this deal with Subaru, the teammates became known as "Subaru Rally Team USA." With the new rally season, Block also got a brand new Vermont SportsCar prepped 2006 Subaru WRX STi. He competed in the first ever X Games rally event at X Games XII. In the competition, Block ended up finishing third to take the bronze. He went on to compete in the 2006 Rally America National Championship, where he finished second overall.