An increasing number of studies are finding that teenagers simply aren’t getting enough sleep, with some suggesting that up to a half of all teens are now suffering from sleep deprivation. But what exactly is it to be sleep deprived and what impact does it have on the body? Three A-level Psychology students attempt to unpick some of the evidence and discover that the situation is more complicated than many might at first believe.
Looking at the evidence – Florence Roberts-Graham
Sleep deprivation is the condition of not having enough sleep. A few studies into sleep deprivation have been conducted to find the effects of sleep deprivation on the body and how long you can be deprived of sleep.
Randy Gardner holds the scientifically documented record for the longest period a human being has intentionally gone without sleep not using stimulants of any kind. Gardner (18years old) was a high school student at the time and stayed awake for a total of 264 hours (eleven days) as part of a school science project. At a press conference, on the final day he said, “I wanted to prove that bad things didn’t happen if you went without sleep,” said Gardner. “I thought, I can break that record and I don’t think it would be a negative experience.” Stanford University’s sleep researcher William Dement observed Gardner’s ‘science project’.
After the experiment Gardner slept for 14 hours 40 minutes, which isn’t a huge amount of sleep after the 11 days he’d been awake for! Overall Gardner only made up 11 hours of the 90 hours he lost. Surely his body would have needed to catch up on all the sleep he had missed to follow the restoration theory. The restoration theory (Ian Oswald, 1966) is the theory that the purpose of sleep is to restore the body during inactivity. However the sleep that he did make up, made up a disproportionate amount of SWS4 and REM.
* 68% Stage 4
* 53% REM
This therefore supports Oswald’s restoration theory of sleep.
The picture of results from the sleep deprivation is confusing. It is often claimed that Gardner’s experiment demonstrated that extreme sleep deprivation has little effect, other than the mood changes associated with tiredness. Dement claims that there was very little in terms of cognitive dysfunction to Gardner. This is primarily due to a report by researcher William Dement, who stated that on the tenth day of the experiment, Gardner had been, among other things, able to beat Dement at pinball. However, John J. Ross, who monitored his health, reported serious cognitive and behavioral changes. These included moodiness, problems with concentration and short term memory, paranoia, and hallucinations.
No long-term psychological or physical effects have been observed since Garners ‘school project’ took place.
Another study into sleep deprivation is a study of Peter Tripp who was a radio DJ. He did the experiment as part of a radio program to raise money for charity. Tripp stayed awake for 201 hours and 10 minutes (8 days). Although unlike Gardner, Tripp was under the influence of drugs for the last 66 hours. This means that the study isn’t as reliable as Gardner’s study. He used drugs to get through the experiment as he was doing it in the face of the public.
After the experiment Tripp slept for 13 hours and 13 minutes, this also isn’t a lot of sleep compared to the amount he had missed.
The results from Tripp’s experiment aren’t as reliable as Gardner’s as Tripp also experienced hallucinations but as Tripp was using drugs, it isn’t clear whether it was the sleep deprivation or the drugs causing the hallucinations. Tripp also started seeing things that weren’t there after just a few days. After watching his brain waves, doctors found that even though Tripp was awake, his brain waves and hallucinations shadowed the 90minute REM cycle, and he was having hallucinations instead of dreams. Also over the time, Tripp’s mean body temperature declined and he because abusive to everyone around him including people who he had known for years.
Weeks later after the experiment was all over, Tripp himself believed he had completely recovered back to his normal self and was suffering no effects from the experiment, although close people around him including his wife didn’t agree with him and they soon after got a divorce. As well as his divorce, Tripp’s career nose-dived after becoming embroiled in a scandal. Tripp had hoped that the experiment would boost his career but found the opposite happening. Tripp blamed the sleep deprivation for his fall from grace.
With both these experiments you can’t generalize the results over the whole population for the results of sleep deprivation, as they are both single person experiments and these case studies aren’t very reliable to generalize. But they have given us some valuable points and results about some cases of sleep deprivation.
Randy Gardner and Peter Tripp- The truth behind sleep deprivation – Tom Acaster
For a long time people have argued about the effects of the deprivation of sleep, both cognitively and physically. Some argue that, without sleep, our bodies cannot cope with hassles of everyday life. Others argue that, whilst the deprivation of sleep has an effect, it is not significant enough to affect the functions of everyday life.
The truth behind this debate lies, as always, with evidence. More specifically, case studies have the answer as to how humans react to sleep deprivation, while experiments from the minds of Rechtschaffen and Jouvet tell us how animals behave when confronted with sleep deprivation.
An important study into the effects of sleep deprivation comes from Huber-Weidman, who performed a meta-analysis to find out the effects of sleep loss on humans. He came up with a table, which showed the varying effects of nights without sleep. He came to the conclusion that it would only take 6 days for someone to be contracted with “sleep deprivation psychosis” which essentially means that the person becomes depersonalised, and loses they’re sense of self identity. There are also case studies showing the effects of a lack of sleep.
Peter Tripp was a radio DJ who, as a publicity stunt, decided to see how long he could go for without sleep. He lasted 201 hours and 10 minutes, before succumbing to sleep. After a few days, he began to hallucinate, seeing cobwebs, mice, and kittens; looking through drawers for money that wasn’t there and insisting that a technician had dropped a hot electrode into his shoe. Randy Gardner also did something similar as part of a science project. He stayed up for 11 days, during which time it was said that he hallucinated, had blurred vision and extreme paranoia.
There are also several animal studies that show the effects of sleep deprivation. These are Jouvet and Rechtschaffen. Rechtschaffen et al placed rats on a metal disc in water. Every time its EEG suggested it was falling asleep, the disc began to spin. A second rat was used as control, but was allowed to sleep. After 33 days the rats died. Jouvet also did a similar experiment that later became known as the “upturned flowerpot” experiment. Kittens were kept on an upturned flowerpot, and when they began to fall asleep, they fell off. They soon realised they had to stay awake to not fall off. The cats died after 35 days.
However, there are obviously some issues when considering these results as definite proof. The problem with Randy Gardner comes from the witness accounts. The man who observed him claimed that there was no real difference between him and his normal functions, whereas the paramedic claimed that he was suffering with extreme paranoia and slurred speech as well as hallucinations. Therefore the accuracy of the accounts can question the reliability of the study. Peter Tripp was also on drugs for the last 60 hours of his experiment, so we don’t know if his hallucinations and such were because of the effects of drugs. It also hard to generalise the studies on a larger scale, when only one participant was involved. There also clear problems with generalisability in the animal studies, and the animal studies have ethical issues associated with them as well.
In conclusion, it’s incredibly hard to successfully pinpoint the exact effects of sleep deprivation. The animal studies show that sleep deprivation is undeniably bad… for cats and rats. As for humans, it isn’t so easy. The evidence we do have is tainted by drugs and inaccurate witnesses, which makes it increasingly hard to successfully decide the true effects of sleep deprivation. We may have some understanding, but we don’t have anywhere near enough.
The Sad Case of Peter Tripp – Rachel Gilby
Sleep deprivation is an ever growing problem with over half of all teenagers sleep deprived according to experts.
Not only is lack of sleep evident in young people and having a negative impact on their achievements, but many adults also aren’t getting enough sleep. Many car accidents in fact (around 3,000 deaths and serious injuries on UK roads each according to the AA) are caused by overly tired drivers at the wheel. But why is sleep so important and what are the true risks of sleep deprivation?
Sleep is an altered state of consciousness. It is a naturally occurring process of many stages including different stages of slow wave sleep and REM sleep. There are a number of different theories as to why sleep is needed. It is said that a good theory of sleep needs to: provide a plausible explanation as to why sleep is found in such a variety of different animals, explain the findings of research studies into sleep deprivation and be able to explain the differences that exist in sleep patterns between different species. The 2 main theories of sleep are the restoration theory and the evolutionary theory. The restoration theory by Oswald suggests that sleep is needed to restore our brain and body to help them function properly. His research suggests that slow wave sleep may restore the biological processes in our body and REM restores the brain. The opposing theory is the evolutionary theory, including the hibernation theory by Webb. In this it is suggested that humans and animals need to sleep to conserve energy. The theory is very much based on what is needed for survival, with diet predators and food availability all being factors influencing the amount of sleep an animal can have.
Studies into sleep deprivation provide much of the evidence as to why we really need sleep; if we know whathappens if we don’t sleep, we are able to piece together why we need it in the first place. The 2 main human studies used are those of Randy Gardener, a school boy who stayed awake for 264 hours as part of a school project, and Peter Tripp, a radio DJ who stayed awake for 201 hours as part of a record breaking wakeathon publicity stunt. Randy Gardener, who was observed by Stanford university sleep research William Dement, was claimed to have not suffered cognitively during the exercise, though medical staff did disagree with this claim. Afterwards he slept for 14 hours and 40 minutes with the total sleep he made up only accounting for 11 hours of the 90 he lost. This showed that it is not important to make up sleep lost. However it was found that he did make up a disproportionate amount of Slow wave sleep 4 and REM suggesting that these forms of sleep may be the most important to the body, also supporting the restoration theory of sleep. Peter Tripp on the other hand was seen to have suffered cognitively as a result of his sleep deprivation. During his stunt, which involved him staying in a glass box in Times Square for much of the time, Tripp experienced hallucinations within the first 6 days, worsened further by the fact his last 66 hours were spent under the influence of drugs to keep him awake. After the stunt he slept for 13 hours and 13 minutes suggesting again that you do not need to fully catch up on the hours of sleep that you have lost. After the event Tripp’s career nose dived with him being involved in many scandals, his involvement of which he put a strong emphasis of blame on the wakeathon stunt and its psychological impact.
Many other studies into the impact of sleep deprivation have also been conducted. A meta analysis (study of studies) by Huber-Weidman provides us with a better picture of overall what symptoms a lack of sleep appears to bring. Below is a table of their results.
As you can see the impacts of sleep deprivation show that sleep really is something that is needed, even if it isn’t something that needs to be caught up on. Whichever way you look at it, sleep is clearly important and the ability to concentrate it brings, needed especially for the tasks we do in day to day life such as driving, as well as for the learning of the many sleep deprived teens in the UK.
Research conducted over many years by psychologists investigating student motivation, have come up with the following list of habits. Most or all of these are found in the most successful students.
Effort: If you don’t put the work in, you’re not going to get much out.
With six weeks free of school I’m sure you will all be looking for something productive to do. So, I’ve compiled a little list of psychology and sociology related films that might interest. If you have any fovourites you’d like to add, just use the comments button.
(All descriptions from Amazon.co.uk)
Films about memory:
Memento (2000) Guy Pearce, Carrie-Anne Moss
An absolute stunner of a movie, Memento combines a bold, mind-bending script with compelling action and virtuoso performances. Guy Pearce plays Leonard Shelby, hunting down the man who raped and murdered his wife. The problem is that “the incident” that robbed Leonard of his wife also stole his ability to make new memories. Unable to retain a location, a face, or a new clue on his own, Leonard continues his search with the help of notes, Polaroids, and even homemade tattoos for vital information. Because of his condition, Leonard essentially lives his life in short, present-tense segments, with no clear idea of what’s just happened to him. That’s where Memento gets really interesting; the story begins at the end, and the movie jumps backward in 10-minute segments. The suspense of the movie lies not in discovering what happens, but in finding out why it happened. Amazingly, the movie achieves edge-of-your-seat excitement even as it moves backward in time! , and it keeps the mind hopping as cause and effect are pieced together.
Total Recall (2012) Colin Farrell, Kate Beckensale
Welcome to Rekall, the company that can turn your dreams into real memories. For a factory worker named Douglas Quaid (Colin Farrell), even though he’s got a beautiful wife (Kate Beckinsale) whom he loves, the mind-trip sounds like the perfect vacation from his frustrating life – real memories of life as a super-spy might be just what he needs. But when the procedure goes horribly wrong, Quaid becomes a hunted man. Finding himself on the run from the police – controlled by Chancellor Cohaagen (Bryan Cranston), the leader of the free world – Quaid teams up with a rebel fighter (Jessica Biel) to find the head of the underground resistance (Bill Nighy) and stop Cohaagen. The line between fantasy and reality gets blurred and the fate of his world hangs in the balance as Quaid discovers his true identity, his true love, and his true fate.
A man claiming to be Dr Martin Harris awakes in Berlin hospital with severe head injuries and very little knowledge as to how he got there. The doctors inform him that he has been in a coma for four days after surviving a near fatal car crash. Attempting to piece together the incidents leading up to the accident, he discovers that his wife no longer recognises him and another man has assumed his identity. Now the only thing standing in the way of him and the truth is a deadly team of trained assassins who will stop at nothing to have him killed. It’s time for Dr Harris to face his identity, his sanity and take back his life… by force.
Films about psychopathology:
Urban fairytale set between modern-day London and the religion-dominated future metropolis of Meanwhile City. The film follows four lost souls divided between the two worlds: Jonathan Preest (Ryan Phillippe), a masked vigilante detective who has vowed revenge on Meanwhile City’s leader, Emilia (Eva Green), a beautiful young art student whose difficult relationship with her mother fuels her cynicism and suicidal tendencies, Milo (Sam Riley), a heartbroken thirty-something who remains fixated on his first love, and Peter (Bernard Hill), a deeply religious man who has come to London to search the streets for his missing son.
Donnie Darko (2002) Jake Gyllenhaal, Maggie Gyllenhall
It’s 1988 in small-town America and Donnie, a disturbed teenager on medication and undergoing psychoanalysis for his blackouts and personality disorders, is being visited by a being in a rabbit suit whom he calls Frank. It’s this anti-Harvey that saves Donnie from being crushed to death when an airplane engine falls from the sky onto his house. This is the beginning of their escalating relationship, which, as Donnie follows Frank’s instructions, becomes increasingly violent and destructive. Added to this is Frank’s warning of the impending apocalypse and Donnie’s realisation that he can manipulate time, leading to a startling denouement where nearly everything becomes clear.
Jack Nicholson is Randle P McMurphy, a livewire troublemaker who unwisely cons his way out of prison and into a mental institution without realising he has switched from serving a sentence with a release date to being committed until adjudged sane by the same people he is winding up on a daily basis.
Girl, Interrupted (1999) Winona Ryder, Angelina Jolie, Jared Leto
New England, the 1960s. 17-year-old Susanna (Winona Ryder) is diagnosed as suffering a borderline personality disorder and sent to Claymore psychiatric hospital. Once there, she rejects the treatment of psychiatrist Dr Wick (Vanessa Redgrave) and nurse Valerie (Whoopi Goldberg), turning instead to her fellow inmates – the disruptive Lisa (Angelina Jolie), compulsive liar Georgina (Clea DuVall), and spoilt rich girl Daisy (Brittany Murphy), who suffers from an eating disorder.
Films about Addiction:
The film that effectively launched the star careers of Robert Carlyle, Ewan McGregor and Jonny Lee Miller is a hard, barbed picaresque, culled from the bestseller by Irvine Welsh and thrown down against the heroin hinterlands of Edinburgh. Directed with abandon by Danny Boyle, Trainspotting conspires to be at once a hip youth flick and a grim cautionary fable.
Films about Juvenile Delinquency (Sociology – Crime and Deviance)
Set against the soundtrack of The Who’s 1973 mighty concept album ‘Quadrophenia’, Phil Daniels plays working-class Jimmy, the drug-induced Mod, who hates his job and is misunderstood by his parents. But by night, he comes alive, with the all-nighters, his pills and his scooter-riding friends. Always on a high, life can’t get any better. Then there’s the Brighton scooter run, where both Mods and Rockers converge, ending in the battle of the cults on Brighton Beach. What goes up must come down, and with Jimmy’s come-down, his life is turned around, and so begins his downward spiral into paranoia and isolation, and the four-faceted mindset: Quadrophenia.
As an owner of a factory you may have noticed silly but costly mistakes made by your employees, you may believe this is just due to lack of concentration but this could be due to the shifts they are having to work. Shift work can dramatically disrupt workers sleep making them unable to concentrate and focus on important work. Amy Allsopp looks at why mistakes are more common amongst shift-workers and how employers can help to reduce these costly errors.
People who work shifts are prone to lack of sleep due to the hours they have to work, the time they work is often the time they want to be asleep while the time in the day when they do not want to sleep is often when they are not at work. This can cause massive disruption of biological rhythms such as the sleep wake cycle and could lead to long term sleep deprivation. Although night workers are vital to the smooth running of the factory they are more often than not the cause of big mistakes and accidents that can often have a costly effect on the business. This is because of the decreased alertness because of their lack of sleep.
As well as the shift work causing potential accidents within the workplace studies have shown that shift work can also cause major health problems. In 2008 MM Martino discovered a strong correlation between shift work and a range of different organ diseases. He found that workers who have been working shift work for the around 15 years are at greater risk of developing heart or kidney disease. He believed that this is because of the constant desynchronisation of biological rhythms which would often lead to major sleep deprivation.
Many researchers have looked into how you could reduce the risk of mistakes and sleep deprivation for shift workers. One of the most common suggestions is to enforce the rotation of shifts where the shifts would alternate around every three days. Also forward rotating shifts have been considered where for example an employee may have a morning shift one week followed by afternoon shifts the second week and then finally a night shift on the third week, this would then be repeated. This is believed to be much more beneficial causing much less damage to the workers health, also lessening the chance of mistakes. A final suggestion is the use of artificial lighting in the workplace. Our biological rhythms (particularly the circadian rhythm) are massively influenced by the light, for example when there is bright lighting we feel much more awake compared to if we are somewhere dark. The use of artificial lighting has been proven to make the circadian rhythm last longer meaning people were less tired and will be more able to focus on the work they have to do.
Who knows the costly mistakes that could be caused by unfocused and tired employees but there are successful ways that have been proven to be effective ways to make sure shift workers are always on high alert, preventing anything from going wrong.
With the holiday season upon us, many Brits will be jetting off in search of adventure. Florence Roberts-Graham has been looking into how the body reacts to traveling long distances and what holidaymakers can do to lessen the impact.
What is jet lag?
Jet lag is the effect of a sudden switch of time zones in air travel. This often results in an unpleasant feeling of extreme tiredness, depression and slowed mental and physical reactions and sometimes sickness.
Why might people suffer from Jet Lag?
Jet lag occurs when you fly east to west (easier to adjust) or west to east (harder to adjust). You don’t get jet lag when you fly north to south or vice-versa. This is because you only switch time zones when flying horizontally across the globe. The actual jet lag is caused by the dislocation between the body clock and local zeitgebers (external or environmental cue of time and date e.g. watches). Our biological rhythms are not equipped to cope with sudden and large changes.
Other factors affecting the severity of Jet Lag
Firstly the number of times zones crossed can have an effect as the more you pass the more dislocation your body will feel between the body clock and local zeitgebers. Secondly age. Sack et al (2007) found that jet lag decreases with age.
Individual differences mean some people might suffer awfully with jet lag even just crossing one time zone, but others might not be affected them at all, this is called “phase tolerance”.
Reducing jet lag
Even though we can’t do a lot to avoid jet lag, there are a few things that might help to reduce it.
- Sleeping well before your flight is always a good idea as you might struggle to sleep at a different time once the time zone has changed.
- Adjust flight behaviour to time zone of destination this is to slowly prepare yourself as much as you can so it’s not such a sudden change.
- Avoid caffeine or alcohol
- On arrival, use and adjust to local zeitgebers
- Go out in the morning daylight as soon as possible, sunlight is very effective at resynchronising body clock.
Evidence found that also reduces jet lag
Beaumont et al (2004) found that melatonin given at bedtime three days before travel and for five days after arrival significantly reduced the symptoms of jet lag.
Tom Acaster isn’t convinced that a later start to the school day is the best way to improve educational outcomes. The science, he argues, might be sound – but is society ready?
Evidence supporting an earlier start to the school day is based on research conducted into the circadian rhythm, a biological rhythm that lasts about 24 hours, and is associated with things such as the sleep-wake cycle. This cycle works when external factors (known as exogenous zeitgeibers) affect the SCN (or supercharismatic nucleus) in the brain, which then sends information to the pineal gland, which releases the hormone melatonin, the hormone that, when released into the bloodstream, makes us feel tired. Because this feeling of tiredness is associated with these external factors, we then know when to feel tired based on these triggers. Whilst an adult’s circadian rhythm is more accustomed to earlier starts, teenagers often work better with a later start.
Paul Kelley (formally headteacher at Monksheaton High School) has argued that by starting the day later, the body’s cognitive functions are improved, and the students at the school can function better. The fact is, there is both evidence for and against the effectiveness of starting the school day later on. Kelley himself found that, after applying the research of Russell Foster of Oxford University to his own school, found that students improved they’re performance after this research was put in place. This obviously shows great benefit for the future of education, as this research can lead to a brighter, enthusiastic future for the next generation. This argument can be justified through a variety of reasons. Insufficient sleep causes lowered ability to think, learn, and remember. We know this because in a multitude of studies, adults have voluntarily deprived themselves of sleep and had their cognitive functioning tested. Moreover, sleep deprivation results in irregular emotional control. Also, although experimental studies of extreme sleep deprivation are not ethically possible, in a few studies, children whose sleep was restricted by an hour or so showed some degree of dysfunction similar to those seen in adults. It’s also worth noting that a much larger number of studies have established a correlational association between reduced sleep quantity and quality and poorer performance on a wide variety of tasks including attention, learning, and academic performance.
However, if this theory works so well, why is not compulsory for all schools across the country. One large problem resulted in some negative problems with the teachers; they declined in performance as they were accustomed to the early starts, and their circadian rhythm was accustomed to the typical daily ritual. Whilst this proves that it would be more beneficial to teach the students later in the day, it would also cause problems for the staff as well. Also, if the school hours start later and end later, this will cause problems with the rest of society, as they would also have to change the way they work around the kids. As most of modern society is dominated by adults, this would cause problems for they’re circadian rhythms as well. After school activities would also take a fall, as there would be no time to engage in extra curricular activities, which could train the brain in ways the school cannot, for example sports outside of school.
And what about the children? This may sound cliché, but high school students aren’t exactly clamouring for change. Teens, much like the adults in their lives, will be resistant to change and will worry about the impact on their after-school activities. Therefore, it is equally important to educate the students themselves about the benefits and disadvantages of a later start time. A change will also affect the younger kids. If a change is made, chances are it will affect both primary and secondary education. Whilst this may be advantageous to the high school students, the younger kids will not have the same mindset as teenagers. Consequently, the younger children may not perform as well whilst the older kids thrive.
The main issue I have is that society will change to adapt around the needs of education if the school times are changed. People assume that because of the better grades, unemployment would decrease. However, this is assuming the companies do not change their hiring policies, or university’s not changing their entry requirements. Everything in society will have to adapt or perish should the school times change, but the adaptations may not be for the better.
It may seem like the change of school start times may be something wonderful, but there are a lot of factors that go unanswered. Truthfully, there is no definitive evidence backing either side of the argument, making it hard to justify one way or the other. Also, any evidence that is recorded cannot be taken at face value. There are always issues with validity and reliability of studies, so nothing can really be taken as true. It may appear as though this is the breakthrough the country has been looking for in terms of education, but when you scratch the surface, not all is as it appears.
(Postscript: A later start to the school day was only one of the ‘experiments’ conducted by headteacher Dr Paul Kelley, leading some to claim that he was using his school as some kind of laboratory. In early 2012 Dr Kelley resigned from his position following a highly critical report by the local council. It appears that despite the many revolutionary interventions, he was unable to ensure high exam results. MS)