Girls Get Higher Grades Than Boys In All Subjects

Data from one million students in over 30 countries reveals whether or not there is a ‘boy-crisis’ in schools.

Data from one million students in over 30 countries reveals whether or not there is a ‘boy-crisis’ in schools.

Girls get better grades in all subjects, including math and science, and have done for almost a century, according to research from 30 different countries, including the US.

Recent reports of a so-called ‘boy-crisis’ — reports that boy’s performance is dropping further behind girls — are not supported by the wide-ranging data.

There has been no change in the difference between girls and boys across all subjects: girls have always done better.

The findings come from a new analysis of data collected between 1914 and 2011 in over 30 countries around the world (Voyer & Voyer, 2014).

Rather than aptitude tests, the study’s results are based on school grades. The study’s lead author, Daniel Voyer, explained the reasoning:

“School marks reflect learning in the larger social context of the classroom and require effort and persistence over long periods of time, whereas standardized tests assess basic or specialized academic abilities and aptitudes at one point in time without social influences.”

Girls had better grades, on average, in all subjects, than boys, but the gap was largest in the languages and smallest in math and science.

The study’s co-author, Susan Voyer, said:

“The fact that females generally perform better than their male counterparts throughout what is essentially mandatory schooling in most countries seems to be a well-kept secret, considering how little attention it has received as a global phenomenon.”

The study, published in the journal Psychological Bulletin, gathered together data from 308 studies into children’s mandatory schooling.

The authors speculate on a few reasons for the gap between girls and boys:

  • Girls pushed harder in science: Since boys are assumed to do better at science and maths, girls may be pushed harder by their parents in these subjects.
  • Different learning styles: Boys tend to focus more on the grade they get and girls more on understanding the materials. Since mastering the subject-matter actually produces better marks, this may partly explain the difference.

Image credit: Bart

Why Preschoolers Can Outsmart College Students

Simple test of logic produces surprising win for 4 and 5-year-olds over college students.

Simple test of logic produces surprising win for 4 and 5-year-olds over college students.

Preschoolers can outsmart college students because they are less biased and more flexible than adults, a new study finds.

The conclusion comes from research published in the journal, Cognition, which put 170 college undergrads up against 106 four and five-year-olds in a test of learning and reasoning (Lucas et al., 2014).

Both groups had to try and figure out a game called ‘Blickets’, which was invented for the study.

The game was simple enough for the preschoolers to understand and only involved watching researchers put simple clay objects, like cylinders, pyramids and cubes, onto a box.

Then the box either lit up and played some music or didn’t.

From the object, or combination of objects, that were put on the box, participants had to work out which objects were ‘blickets’: in other words which objects or combinations had the power to make the box light up.

Open to new ideas

The difference between the young adults and the preschoolers was that young children were quicker to pick up on changing evidence.

Preschoolers were much more likely to notice that sometimes unusual combinations of objects would make the box light up.

One of the study’s authors, Alison Gopnik writes:

“The kids got it. They figured out that the machine might work in this unusual way and so that you should put both blocks on together. But the best and brightest students acted as if the machine would always follow the common and obvious rule, even when we showed them that it might work differently.”

Unlike preschoolers, even the smartest young adults were less likely to entertain new theories, even in the face of new evidence.

In contrast, the young children unconsciously followed a model of statistical reasoning called Bayesian logic, which is all about updating predictions on the basis of new data.

Flexible learners

The question now is: how come children are such flexible learners and how can we learn from how they learn?

The researchers conclude that:

“The very fact that children know less to begin with may, paradoxically, make them better, or at least more open-minded, learners. The plasticity of early beliefs may help to explain the bold exploration and breathtaking innovation that characterizes children’s learning.” (Lucas et al., 2014).

The following video from UC Berkeley shows the study in action and Alison Gopnik explaining the results:

Image credit: Monica H.

Free Play: Simple Items More Fun For Children

Study finds children play more intensely and vigorously with crates, pipes and buckets than with monkey bars and slides.

Study finds children play more intensely and vigorously with crates, pipes and buckets than with monkey bars and slides.

A new long-term study has found that traditional playgrounds may be stifling children’s play.

The researchers found that relatively cheap items such as buckets and crates were more effective at encouraging children’s play than expensive equipment.

The two-year study, published in BMC Public Health, followed 120 students at a newly built Australian primary school (Hyndman et al., 2014).

In their playground there were exercise mats, hay bales, pipes and buckets, along with other cheap, everyday items.

The behaviour of these children was compared with another local school which had a more traditional playground, containing slides and monkey bars.

The results of the study were striking: the cheaper items reduced sedentary behaviour by a half from 61.5% down to 30.5%.

Children played more vigorously and intensively with the everyday objects in comparison to the other school.

This was perhaps a result of them enjoying the everyday items more:

“Movable/recycled materials are suggested to stimulate creativity and diversity to children’s play and provide active play experiences by facilitating pushing, pulling and lifting and the construction of structures (e.g. cubby houses, rockets, ships) whilst engaging in social interaction and problem-solving.” (Hyndman et al., 2014).

The study’s lead author, Dr Brendon Hyndman, said:

“Conventional playgrounds are designed by adults — they don’t actually take into consideration how the children want to play. At a time when childhood obesity is growing and playgrounds are shrinking, we need a creative approach to stimulate physical activity among schoolchildren.”

The study’s authors continue:

“Unstructured, active play allows children to understand their world and develop skills, therefore school playground environments should be developed in a manner that enhances development and physical functioning of children.”  (Hyndman et al., 2014).

Image credit: Lars Ploughman

Why Breastfed Babies Are So Smart

Study of 7,500 babies finds two parenting skills that are crucial to IQ boosts at four years of age.

Study of 7,500 babies finds two parenting skills that are crucial to IQ boosts at four years of age.

Many studies over the years have shown that children who are breastfed score higher on IQ tests, but until now the exact cause has been a mystery.

Some scientists said it was something in the milk, others that it’s about the bonding between mother and baby and others still that these and other factors all contributed.

A new study, though, suggests that it’s the parenting behaviours that make the difference (Gibbs & Forste, 2014).

Researchers at Brigham Young University examined data from 7,500 mothers and children collected from birth to four years of age.

They found that two crucial parenting skills were responsible for the boost to cognition. Mothers who breastfed were more likely to:

  • respond to children’s emotional cues,
  • and read to children at 9 months of age.

Together these factors were enough to put children two or three months ahead when they reached four-years-old.

Lead author Ben Gibbs explained:

“Because these are four-year-olds, a month or two represents a non-trivial chunk of time. And if a child is on the edge of needing special education, even a small boost across some eligibility line could shape a child’s educational trajectory.”

The results came from a group of children followed from birth through to five-years-old.

Researchers included all kinds of data about the home environment including:

  • how early and often parents read to children.
  • how supportive and sensitive mothers were to their child’s emotional cues.

It was better educated mothers who were more likely to breastfeed and at the same time also more likely to read to their children and be emotionally responsive.

School readiness

None of this means that breastfeeding doesn’t confer other advantages, it does: for example, breast milk has considerable health benefits.

The suggestion is that breastfeeding doesn’t directly affect IQ, rather it is reading to their children and the high emotional responsiveness of mothers which boosts intellectual development.

The authors conclude:

“Although breastfeeding has important benefits in other settings, the encouragement of breastfeeding to promote school readiness does not appear to be a key intervention point. Promoting parenting behaviors that improve child cognitive development may be a more effective and direct strategy for practitioners to adopt, especially for disadvantaged children.”

Image credit: Harald Groven

Gifted Children Get Ignored in School Despite Huge Future Contribution to Society

Are exceptionally gifted children being failed by the education system?

Are exceptionally gifted children being failed by the education system?

The authors of the largest ever study of the profoundly gifted question whether the education system is providing enough support for highly talented young people.

The US study, published in the journal Psychological Science, identified gifted children by their SAT scores, which placed them in the top 0.01% of the population, either in maths or verbal scores (Hill et al., 2013).

The 320 children were tracked from the age of 13, until they were 38, to see how they did in their chosen professions.

Notable careers

As you might expect, the exceptionally gifted children were more likely to gain Master’s degrees and PhDs, compared with less gifted children.

Many also went on to have notable careers: they wrote books, composed music, started companies, conducted scientific research, became senior business leaders, and excelled in other worthy occupations.

Even at age 13 it was possible to see in which direction exceptionally children might head:

“…mathematically more able individuals tended to focus on achievement in inorganic fields [e.g. computer science, engineering], whereas verbally more able individuals tended to invest their talent in organic fields [e.g. the arts, social sciences, education]; incorporating motivational dimensions, such as interests in people versus things…” (Hill et al., 2013)

Nurturing talent

However, the thing which stood out for the authors, based on previous research, is the roadblocks which gifted students often face in the education system.

Instead of flourishing, they argue, extra skills are often wasted as educators automatically move their focus to other less talented pupils.

The study’s lead author, Harrison Kell, explained:

“There’s this idea that gifted students don’t really need any help. This study shows that’s not the case. These people with very high IQs–what some have called the ‘scary smart’–will do well in regular classrooms, but they still won’t meet their full potential unless they’re given access to accelerated coursework, AP classes and educational programs that place talented students with their intellectual peers…”

They argue that talented children need to be placed in environments that challenge them, so that they can fulfil their true potential:

“…adolescents with extraordinary talent in mathematical and verbal reasoning profit from learning environments that present abstract-symbolic material at a level and pace commensurate with the atypical rates at which these students learn.” (Hill et al., 2013).

These types of environments are much more likely to increase the psychological well-being of exceptional students and help them achieve more in the future.

If exceptional students are our future, why do many societies automatically provide extra help for those with learning difficulties, but not for those with exceptional learning facilities?

Image credit: Thomas Hawk

The Baby Illusion: Mothers Underestimate the Height of Their Youngest Child

Youngest children appear three inches smaller to their mothers than they really are.

Youngest children appear three inches smaller to their mothers than they really are.

A new study published in Current Biology finds that mothers underestimate the height of their youngest child; no matter how many children they have (Kaufman et al., 2013).

The study found that mothers underestimated their youngest child’s height by an average of 3 inches (7.5cm). This finding held even for only children.

This is set against the fact that mothers were pretty accurate when asked to indicate the height of their other children, and of everyday objects.

The lead author Jordy Kaufman, explained:

“Contrary to what many may think, this isn’t happening just because the older child just looks so big compared to a baby. It actually happens because all along the parents were under an illusion that their first child was smaller than he or she really was. When the new baby is born, the spell is broken and parents now see their older child as he or she really is.”

To reach this conclusion, 70 mothers were asked to place a mark on the wall estimating the height of each child.  Across the mothers, the youngest child’s height was consistently underestimated.

The authors argue that this is an evolutionary adaptive mechanism that encourages mothers to nurture the youngest child.

Growth spurt

The researcher’s interest was piqued when they surveyed 747 mothers, asking if they had noticed a spurt in the height of their ‘erstwhile-youngest’ child, when their next was born.

More than 70% of mothers said they had noticed this growth spurt and many agreed that it seemed to happen overnight.

Whether or not an evolutionary explanation is valid, this study certainly shows the effect of our knowledge and feelings on our perceptions. Kaufman continued:

“The key implication is that we may treat our youngest children as if they are actually younger than they really are. In other words, our research potentially explains why the ‘baby of the family’ never outgrows that label. To the parents, the baby of the family may always be ‘the baby.'”

[Note: children whose height was estimated were between 2 and 6 years of age–the findings may not hold for older age-groups.]

Image credit: Sergiu Bacioiu

Spanking Children Promotes Antisocial Behaviour and Slows Mental Development

90% of studies on spanking agree that it’s bad for children.

90% of studies on spanking agree that it’s bad for children.

A new book which includes research on over 7,000 US families plus data from 32 different countries, has found that spanking is ultimately detrimental to children.

The book, by Professor Murray Straus of the University of New Hampshire and colleagues, finds that four decades of research is heavily against the use of spanking for children (Straus et al., 2013; The primordial violence: spanking children, psychological development, violence, and crime).

While it may work to correct their behaviour, it doesn’t have any advantages over other methods, and also has significant disadvantages.

Professor Straus explained:

“Research shows that spanking corrects misbehavior. But it also shows that spanking does not work better than other modes of correction, such as time out, explaining, and depriving a child of privileges. Moreover, the research clearly shows that the gains from spanking come at a big cost.”

According to the research, more than 90% of the studies agree that spanking is not good for children.

The problem is that spanking children is associated with:

  • Poorer mental development.
  • Weaker emotional ties between parents and children.
  • Increased risk the child will hit other children
  • Increased risk the child will later hit their partner.

The authors of the book say there is probably no other area of childcare in which the research evidence is so clear.

Professor Straus added:

“More than 20 nations now prohibit spanking by parents. There is an emerging consensus that this is a fundamental human right for children. The United Nations is asking all nations to prohibit spanking. Never spanking will not only reduce the risk of delinquency and mental health problems, it also will bring to children the right to be free of physical attacks in the name of discipline, just as wives gained that human right a century and a quarter ago.”

→ Read on: 10 Current Psychology Studies Every Parent Should Know (you’ll recognise number 4)

Image credit: Lotus Carroll

How to Teach Children to Share

Don’t force them: when given a choice, children’s sharing behaviour increases in the future.

Don’t force them: when given a choice, children’s sharing behaviour increases in the future.

It can be difficult to get young children to share their toys with others.

Some parents’ first instinct is to bribe or even order them to share, but this may be a mistake in the long-run, according to a recent study published in Psychological Science (Chernyak & Kushnir, 2013).

The study found that when 3- and 4-year-old children were given a free choice about whether to share, this encouraged them to share more in the future, in comparison with when they were instructed to share.

Building a sharing personality

While directing children to share seems like a good idea, it can backfire.

That’s because unconsciously children assume if they have to be told or bribed to share, then sharing must not be something they would do willingly. In other words: they learn that they are not naturally ‘sharing people’.

However, if children are given the choice to share or not share, then those who share will come to believe they are ‘sharing people’.

This is based on the well-established idea that people work out who they are, at least partly, by observing what they do.

Although we tend to think of our actions flowing from who we are–which they do, partly–that’s not the whole story.

That’s because we aren’t always sure what causes our actions; we also get feedback about who we are from noticing what we do and why.

When you help an old lady across the street, it reinforces the idea in your mind that you are the kind of person who helps old ladies across the street.

It’s a self-fulfilling prophecy.

And so it is for children: if they notice that they share without being coerced or bribed, then they are more likely to decide that they are the kind of people who share.

The study’s lead author, Nadia Chernyak, said:

“You might imagine that making difficult, costly choices is taxing for young children or even that once children share, they don’t feel the need to do so again. But this wasn’t the case: Once children made a difficult decision to give up something for someone else, they were more generous, not less, later on.”

Image credit: David Robert Bliwas

Soda Consumption Connected to Behavioural Problems in Children

A new study of 2,929 5-year-old children has found a link between consuming sodas and bad behaviour.

A new study of 2,929 5-year-old children has found a link between consuming sodas and bad behaviour.

The US researchers found that children who drank more soda were more likely to be aggressive, to have attention problems, to get into fights and to destroy other people’s belongings (Suglia et al., 2013).

This backs up findings in adolescents that have linked drinking more soda to self-harm, aggression, depression and even suicidal thoughts (Lien et al., 2006Solnick & Hemenway, 2013).

Among the 5-year-olds, 43% consumed at least one soda per day and 4% had 4+ servings per day. Those consuming four or more sodas a day were twice as likely to be involved in bad behaviours as those who drank none.

Is soda causing bad behaviour?

Since the study was based on associations, it doesn’t necessarily tell us that drinking soft drinks caused the behavioural problems, but this study does support the possibility.

For example, you might think that drinking more soda was a signal that a child had a troubled background. And it was the troubled background that was the real cause of the behavioural problems.

The researchers found evidence against this possibility by measuring the following factors and taking them into account:

  • socio-demographic factors,
  • maternal depression,
  • intimate partner violence,
  • and paternal incarceration,

The link between drinking soda and behavioural problems persisted with these variables factored in.

One factor the authors didn’t control for, though, is blood sugar level. It may be that some children with lower blood sugar consume more soda, and it’s the lower blood sugar that causes the bad behaviour.

Nevertheless the link still needs explaining. So perhaps it is the soda after all, given that:

“Caffeine has been linked to insufficient sleep, nervousness and jitters, impulsivity, and risk-taking in children and adolescents, and a study of 9- to 12-year-old children in Brazil found that those with depression were more likely to consume caffeine.” (Suglia et al., 2013).

Apart from caffeine, the other possible causative factors in sodas are:

  • high-fructose corn syrup,
  • aspartame,
  • sodium benzoate, and
  • phosphoric or citric acid.

Since sodas are hardly a healthy choice for children or adults–they have been associated with obesity, heart disease, asthma and more–it makes sense for parents to limit their intake for both physiological and psychological reasons.

Image credit: Ally Mauro

One Extra Hour of TV Reduces Toddlers’ Kindergarten Chances

Each extra hour of TV damages toddlers’ vocab, math and class engagement 3 years later.

Each hour of TV above recommendations damages toddlers’ vocab, math and class engagement 3 years later.

A new study that followed almost 2,000 Canadian children from birth found that an extra hour’s TV viewing at 2.5-years-old predicted worse performance later when they attended kindergarten (Pagani et al., 2013).

The American Academy of Pediatrics recommends that children should watch no more than two hours of TV per day after two years of age, and none before that age.

The study backs up this recommendation, finding that the more children exceeded this recommendation at 2.5 years old, the worse their vocabulary, math and motor skills were at 5-years-old.

On average the children watched 1.5 hours of TV every day but increasing this by just one hour was enough to put a dent in their psychological scores three years later. Not only that, but they also had weaker attention and were more likely to be bullied by classmates.

The study’s lead author, Professor Linda Pagani of the University of Montreal explained:

“This is the first time ever that a stringently controlled associational birth cohort study has looked at and found a relationship between too much toddler screen time and kindergarten risks for poor motor skills and psychosocial difficulties, like victimization by classmates.”

Although this is the best study available linking TV watching with cognitive performance amongst toddlers, there have been hints of the dangers:

  • One study found that just 9 minutes of watching fast-paced cartoons had an immediate negative effect on 4-year-old’s executive function, such as their ability to delay gratification (Lillard & Peterson, 2011).
  • Another study found that watching noneducational programmes at age 3 was associated with attentional problems at age 4-5 (Zimmerman et al., 2007).

The first three years of life are a critical period in brain development, a fact of which some parents seem to be unaware. After 3-years of age, there’s evidence that the right kind of preschool TV can be beneficial. Before that, though, many scientists think TV is best avoided or severely limited.

Image credit: tOmsk

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