Mental disorders include anxiety-, mood-, substance abuse-, and personality disorders, each of which affects only up to a few per cent of the population in industrialised countries.
The serious personality disorder which affected Steven flickered into his parents' consciousness when he became gripped by paranoia at the age of 10.
This is something which affects your personality.
The team has mapped differences in the brain chemistry of adolescents diagnosed with conduct disorder, which affects 5% of teenagers and is a marker for the development of incurable personality disorders in later life.
Researchers have found that hypochondria, which affects men and women equally, seems more likely to develop in people who have certain personality traits.
However, individuals often differ consistently from one another in how they cope with their environment, a phenomenon known as animal personality, which may affect how individuals use coordination rules and requiring them to compromise.
It did not set out to investigate specific factors relating to particular aspects of postnatal care; however it highlights general areas relating to communication, feeding, mental wellbeing, and personality which potentially affect mothers' satisfaction levels with postnatal care and the potential routes of impact, see Figure 3.
Each of their fly-halves - Ruaridh Jackson, Duncan Weir and Tom Heathcote - all have different personalities and skill-sets which affect the way they play and in turn the way the team plays because a 10 directs the team.
Katie Ghose, its chief executive, said: "It seems like young people haven't been engaged in a debate which has so far focused on personalities rather than the real issues which affect them.
This model depicts SQOL as the outcome from a combination of personality, which is proposed to provide affect balance, cognition involving the 'second order determinants' of self-esteem, optimism, and control, and interaction with the environment.
