Five Factor Theory Of Personality

After many decades of research on the human personality, first hypothesized by Sir Francis Galton in 1884, the five-factor personality theory was finally published by Robert McCrae and Paul Costa in 1985.33 The theory determines the most important traits in a personality from thousands of traits, and it uses the factor analysis. These factors are believed to be the core of someone’s personality and they cannot be changed during the lifespan of a person. The five traits consistently emerge from factor-analytic studies. They are: 1) Extraversion vs. Introversion: distant and shy versus friendly and conversational, 2) Neuroticism vs. Emotional Stability: peaceful and secure versus nervousness and insecure, 3) Agreeableness vs. Antagonism: doubtful

The BFI explains different aspects of personality that are consistent, mostly with adults. A Gombor, author of the article Comparing Internet affinity and the Big Five Personality Factors Between Hungarian and Israeli Medical Students, believes that, “In the course of thirty years, most adults will have undergone radical changes in their life situations. They may have married, divorced, remarried. They have probably moved their residence several times…And yet, most will not have changed appreciably in their standing on any of the five dimensions.”34 The BFI is a widely accepted structure. Arguments were laid down by researchers that the structure of BFI is a ‘’biologically based human universal’’ that exceeds language and other cultural differences.35 Cross-cultural studies on the BFI in over 50 societies across six continents have aided the existence and universality of the BFI. A worldwide construct suggests uniform covariance within traits in human beings despite the enormous difference in culture, economy, social life, history ideology, and all other forms of cultural and behavioral

In terms of aliment, high openness and extraversion scores, and low neuroticism scores, were associated with a Mediterranean style diet.50 High conscientiousness and agreeableness scores were associated with a health-aware diet dimension.50 The convenience diet was associated with low openness and high neuroticism scores, and low openness scores were associated with preferring sweet foods.50 Also, a low conscientiousness score as well as a high BMI was associated with high scores on the convenience diet dimension.50 It was also found that high agreeableness and conscientiousness scores were associated with high fruit intake,51 and high agreeableness scores were associated with high vegetable intake.51 in another study it was found that weight loss from very low energy diet which consists of 717 Cals /day for 4 weeks to be positively associated with neuroticism while it was negatively associated with Conscientiousness 52 On the other hand, one study in Japanese students found neuroticism to be associated with intakes of sweet and salty foods,53 while a Scottish study found high neuroticism to be associated with a traditional convenience diet (eating more tinned vegetables, meat pies, pastries and sausage rolls, puddings, etc.) and low neuroticism to be associated with a Mediterranean-style