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People who throw temper tantrums are more likely to have been born in summer, scientists have claimed. 

Researchers studied 400 people and matched their personality type to the season when they were born. 

The scientists claim people born at particular times of the year have a greater chance of developing certain personality traits. 

Jamie Oliver and David Beckham are both spring babies, which may explain their excessively positive attitudes

Cricketer Kevin Pietersen and former footballer Roy Keane were both born in summer where people are more likely to develop rapid, frequent mood swings according to a study 

The Duchess of Cambridge and broadcaster Clare Balding are both winter babies, which according to scientists, means they are less likely to be irritable 

They said this was because the seasons had an affect on certain chemical substances in the brain, such as dopamine and serotonin, which control mood. 

They discovered that babies born in the summer were much more likely to suffer mood swings when they grow up. 

In contrast, those born in spring tended to be excessively positive, upbeat and optimistic. 

They also found that those born in the autumn were less likely to be depressive, while winter babies were less likely to be irritable. 

The study, conducted by scientists in Budapest, may explain why some well-known personalities are good-natured, while others have a fiery temper. 

The study claims spring babies, such as Sue Barker and Mary Berry, were more cheerful

Summer babies Roy Keane and cricketer Kevin Pietersen both attracted controversy this month for blasting former team-mates and coaches in their eye-raising autobiographies. 

In his book, the former Manchester United captain also revealed having a bust-up with goalkeeper Peter Schmeichel during a pre-season trip to Hong Kong. 

Elsewhere, celebrities such as Mary Berry, Sue Barker, David Beckham and Jamie Oliver were all born in spring which matches the description in the study of having a cheerful persona. 

The Duchess of Cambridge was born in winter, on January 9, which means that she is less irritable according to the research.

Lead researcher Professor Xenia Gonda told the Sunday Telegraph: 'Our work looked at over 400 subjects and matched their birth season to personality types in later life.

'Basically, it seems that when you are born may increase or decrease your chance of developing certain mood disorders.

'We are now looking at is to see if there are genetic markers which are related to season of birth and mood disorder.' 

The study is being presented today at the annual conference of the European College of Neuropsychopharmacology (ECNP) in Berlin, Germany, on Sunday.