What Your Sleep Reveals About Your Personality

Introverts and extraverts react differently to sleep deprivation.

Introverts and extraverts react differently to sleep deprivation.

Introverts are naturally better at dealing with sleep deprivation after a busy day of social interactions, research finds.

Despite being kept awake for 22 hours, introverts remained more alert than extroverts when tested the next day.

It may be because introverts generally have higher cortical arousal.

In contrast, extraverts are vulnerable to sleep loss after interacting with many people during the day.

After being kept awake all night, they were more sleepy the next day than introverts.

Dr Tracy L. Rupp, who led the study, said:

“Extroverts exposed to socially enriched environments showed greater vulnerability to subsequent sleep deprivation than did extroverts exposed to an identical but socially impoverished environment

The ability of introverts to resist sleep loss was relatively unaffected by the social environment.

Overall, the present results might also be interpreted more generally to suggest that waking experiences, along with their interaction with individual characteristics, influence vulnerability to subsequent sleep loss.”

The study included 48 people who did a series of tasks for 12 hours either on their own or in a group.

Everyone was then kept awake for 22 hours and given periodic tests of alertness.

Although introverts and extroverts usually slept about the same on a normal night, it was the introverts who did better on the tests after being sleep deprived.

The introvert’s ability to resist sleep loss could be down to genetic factors.

Social interactions are often complex and require people to regulate their attention and alertness.

As a result, more sleep may be required to recover.

Dr Rupp said:

“These data have practical relevance for occupational shift work and military operational assignments, and theoretical implications for understanding individual-difference factors influencing vulnerability or resiliency to sleep loss.”

The study was published in the journal Sleep (Rupp et al., 2010).

The Personality Disorder Linked To Social Media Use

The modern way to develop a personality disorder.

The modern way to develop a personality disorder.

Posting too many pictures to social media can turn you into a narcissist, new research reveals.

People posting pictures heavily to social media became 25% more narcissistic in the four months of the study.

The increase pushed many across the cut-off for having a narcissistic personality disorder.

However, those posting mostly text to social media, such as Twitter, did not see a rise in narcissism.

There has been much debate about whether social media can increase narcissism, explained Professor Phil Reed, who led the study:

“There have been suggestions of links between narcissism and the use of visual postings on social media, such as Facebook, but, until this study, it was not known if narcissists use this form of social media more, or whether using such platforms is associated with the subsequent growth in narcissism.

The results of this study suggest that both occur, but show that posting selfies can increase narcissism.”

The study followed 74 people aged 18 to 34 for four months.

Their social media use was tracked, along with narcissistic personality traits.

People used social media for an average of three hours per day, although some used it for up to 8 hours per day.

Professor Reed said:

“Taking our sample as representative of the population, which there is no reason to doubt, this means that about 20% of people may be at risk of developing such narcissistic traits associated with their excessive visual social media use.

That the predominant usage of social media for the participants was visual, mainly through Facebook, suggests the growth of this personality problem could be seen increasingly more often, unless we recognise the dangers in this form of communication.”

Professor Roberto Truzoli. study co-author, said:

“The use of visual social media may emphasise the perception of narcissistic individuals that they are the main focus of attention.

The lack of immediate ‘direct’ social censure, may offer them the opportunity to inflict aspects of their narcissistic personality, present themselves in a grandiose manner, and realise fantasies of omnipotence.”

The study was published in The Open Psychology Journal (Reed et al., 2018).

This Personality Trait Linked To Higher Income

This personality trait encourages persistence, cooperation and ambition.

This personality trait encourages persistence, cooperation and ambition.

Optimists in paid employment earn more than pessimists, new research finds.

Around 80% of people are optimistic, which tends to encourage persistence, cooperation and ambition.

However, being an optimist may not be as good for those starting their own business.

For entrepreneurs, pessimism is a more beneficial personality trait, the research also finds.

Pessimistic business owners earn 30% more than optimists.

Entrepreneurs typically earn less, work longer hours and take on more risk than those in paid employment.

Optimists, though, are more likely to face these issues without realising the dangers.

Dr Chris Dawson, the study’s first author, said:

“Our results suggest that too many people are starting business ventures, at least as far as personal returns are concerned.

As a society we celebrate optimism and entrepreneurial thinking but when the two combine it pays to take a reality check.

Every episode of the BBC’s Dragon’s Den provides examples of such wishful thinking.

Pessimism may not generally be seen as a desirable trait but it does protect people from taking on poor entrepreneurial projects.”

The conclusions come from data covering 18 years taken from a major longitudinal survey.

Professor David de Meza, study co-author, said:

“Governments frequently talk about the role of entrepreneurs in creating economic growth, but there is a downside.

The personal and societal fall-out of failed businesses shouldn’t be underestimated, which is exactly what optimists do.

Policy makers should not encourage the wrong sort of start-up.”

The study was published in the journal European Economic Review (Dawson et al., 2018).

The Personality Trait Linked To Bankruptcy

People with this trait are 50% more likely to be declared bankrupt.

People with this trait are 50% more likely to be declared bankrupt.

Being kind and trusting is linked to financial hardship, especially for the poor, new research finds.

In general, people who are more agreeable are at greater risk of bankruptcy and lower credit ratings.

The reason is that people who are agreeable tend to care less about money.

For those who have an adequate income, caring little about money is not as big a problem.

With greater financial resources to fall back on, richer people can afford to give money a low priority.

For those at the lower end of society, though, being nice and trusting can be financially problematic.

Dr Sandra Matz, the study’s first author, said:

“We were interested in understanding whether having a nice and warm personality, what academics in personality research describe as agreeableness, was related to negative financial outcomes.

Previous research suggested that agreeableness was associated with lower credit scores and income.

We wanted to see if that association held true for other financial indicators and, if so, better understand why nice guys seem to finish last.”

The study analysed data from over 3 million people.

It used bank account data, a national survey, two online panels and publicly available data.

Dr Joe Gladstone, study co-author, explained the results:

“Not every agreeable person is at equal risk of experiencing financial hardship.

The relationship was much stronger for lower-income individuals, who don’t have the financial means to compensate for the detrimental impact of their agreeable personality.”

The results also revealed that agreeableness in childhood predicted financial problems 25 years later.

Dr Matz said:

“Our results help us to understand one potential factor underlying financial hardship, which can have serious implications for people’s well-being.

Being kind and trusting has financial costs, especially for those who do not have the means to compensate for their personalities.”

The study was published in the Journal of Personality and Social Psychology (Matz & Gladstone, 2018).

The Personality Trait Linked To Infidelity

Infidelity is linked to low self-esteem, distress and divorce.

Infidelity is linked to low self-esteem, distress and divorce.

People high on the personality trait of ‘sexual narcissism’ are more likely to cheat on their partner, research finds.

Narcissists of this type are not just full of themselves in general, but full of themselves in the bedroom.

They are people who will do whatever it takes to sleep with whoever they like, as they feel they deserve it.

This sense of entitlement is one of the strongest signs of cheating behaviour.

They also tend to have an over-inflated idea of their skills in the bedroom.

However, they have little interest in what their partner wants and do not mind exploiting others.

The conclusions come from a study of 123 newlyweds who were tracked for between one and four years.

They were asked about their satisfaction with the relationship, narcissism and whether they had cheated on their partner.

The authors describe narcissism as…

“…a multifaceted personality style characterized by tendencies toward exploiting others, a general lack of empathy for others, and a pervasive confidence in one’s abilities”

The results revealed that 5% of couples experienced extramarital affairs in this period — half of the cheaters were husbands, half were wives.

Factors that predicted cheating, along with this type of narcissism, were low relationship satisfaction and the overall amount of narcissism of the couple together.

The authors confirm the damaging consequences of infidelity for a relationship:

“…infidelity can have serious negative consequences for those involved.

Not only is infidelity associated with decreased relationship satisfaction in both partners, it is has been identified as one of the most common predictors of divorce.

Further, those who commit infidelity and their partners also frequently experience negative intrapersonal outcomes, such as decreased self-esteem and increased psychological distress.”

The study was published in the journal ASB (McNulty & Widman, 2014).

Obsessive People Have This Personality Trait

Obsessional people often have recurring thoughts or fears.

Obsessional people often have recurring thoughts or fears.

The personality trait of perfectionism is strongly linked to developing obsessive-compulsive disorder, new research finds.

Young children who have excessive self-control and perfectionist tendencies have double the chance of developing obsessive-compulsive disorder (OCD), psychologists have found.

For the study, children were asked to draw a perfect circle over three and a half minutes while researchers encouraged them to do better.

Those that concentrated more intensely were deemed to have perfectionist tendencies.

Scans also found that perfectionists had smaller brain volumes in an area linked to OCD, the anterior cingulate cortex.

OCD often involves recurring thoughts or obsessions, like having things in order or a fear of germs.

Dr Kirsten E. Gilbert, the study’s first author, said:

“Having a lot of self-control and striving for perfection often are considered by parents and society as good because they can eliminate mistakes, but excessive self-control and perfectionism raise a red flag.

In adolescents and adults, these characteristics are associated with OCD and other disorders, such as anorexia and social anxiety.

We’ve now been able to link this to OCD risk in children.”

It is important to catch OCD as early as possible in life so treatment can help to reduce compulsions and obsessions.

Dr Gilbert said:

“Some kids were very self-critical.

The researcher would point out flaws, but the child was critical of the effort, too.

That excessive perfectionism was the strongest predictor of OCD later on.”

The conclusions come from a study of 292 children aged just 4 and 5-years-old.

They were followed for 12 years, during which time 35 developed OCD.

Perfectionists were twice as likely to go on and develop OCD.

Dr Joan L. Luby, study co-author, said:

“In its most severe forms, OCD is a highly disabling and intractable disorder.

Therefore, this first identification of tangible risk behaviors in early childhood opens exciting new opportunities for the design of preventive interventions.”

Dr Gilbert concluded:

“One of my interests, ideally, is to create therapies geared toward prevention.

We also want to look at the role of parenting because if one of these kids has a parent who’s always saying, ‘That’s not good enough!’ you can see how this problem could spiral.”

The study was published in the journal JAMA Psychiatry (Gilbert et al., 2018).

2 Personality Traits Linked To Negative Thoughts

The best strategy for getting rid of negative thoughts.

The best strategy for getting rid of negative thoughts.

People high in neuroticism are more likely to experience negative thoughts, research finds.

In addition, being introverted is linked to spontaneously remembering more negative life events.

Together, both personality traits — neuroticism and introversion — are linked to depression and anxiety.

On the other hand, people with stable emotions who are more extraverted are at lower risk of depression and anxiety.

Neuroticism and introversion are two of the ‘big 5’ personality traits, that also include agreeableness, conscientiousness and openness to experience.

The study included 71 people who were given personality tests and asked to recall some personal memories.

Dr Florin Dolcos, study co-author, explained:

“We’re looking at traits that are associated with the way that people process the emotional world and the way that they respond to it.

We wanted to look not only at how personality traits might influence what and how people remember, but also to examine how that impacts their (subsequent) emotional state.”

The results showed that both men and women who were more introverted tended to recall more negative memories.

Neurotic women had a tendency to repeatedly return to the same memories, the study revealed.

Psychologists call this rumination.

Dr Dolcos explained:

“Depressed people recollect those negative memories and as a result they feel sad.

And as a result of feeling sad, the tendency is to have more negative memories recollected.

It’s a kind of a vicious circle.”

Neurotic men, though, recalled a higher proportion of negative memories.

Getting rid of negative thoughts

To get rid of negative thoughts, people use a variety of strategies.

For women, trying to suppress negative thoughts did not work, as they returned stronger than before.

(See: the problem with thought suppression.)

Men who made an effort to think differently about their memories — what psychologists call ‘reappraisal’ — recalled more positive memories.

Suppression was not linked to any differences for men.

One of the best ways of getting rid of negative thoughts is using flexible emotional control strategies.

The study was published in the journal Emotion (Denkova et al., 2012).

The Thought Pattern That Reduces Pain (S)

The less the ‘default network’ is activated, the less pain people felt, the study showed.

The less the 'default network' is activated, the less pain people felt, the study showed.


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This Situation Reveals People’s True Personality

People reveal their true selves when in this situation.

People reveal their true selves when in this situation.

Being in hurry makes people reveal their true personalities even more clearly, new research finds.

Time pressure makes selfish people more selfish and it makes good-hearted people even nicer.

This is because, when in a rush, people tend to make the same choice they made before.

Dr Ian Krajbich, study co-author, said:

“People start off with a bias of whether it is best to be selfish or pro-social.

If they are rushed, they’ll tend to go with that bias.”

For the research, 102 people played an economic game, Dr Krajbich explained:

“The participants had to decide whether to give up some of their own money to increase the other person’s payoff and reduce the inequality between them.”

Sometimes people were given two seconds to decide, other times it was 10 seconds.

Dr Krajbich explained the results:

“We found that time pressure tends to magnify the predisposition that people already have, whether it is to be selfish or pro-social.

Under time pressure, when you have very little time to decide, you’re going to lean more heavily than usual on your predisposition or bias of how to act.”

Being forced to wait changed people’s decisions, said Dr Krajbich:

“People may still approach decisions with the expectation that they will act selfishly or pro-socially, depending on their predisposition.

But now they have time to consider the numbers and can think of reasons to go against their bias.

Maybe you’re predisposed to be selfish, but see that you only have to give up $1 and the other person is going to get $20.

That may be enough to get you to act more pro-socially.”

The study was published in the journal Nature Communications (Chen & Krajbich, 2018).

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