Michael Scullin, Ph.D.

Associate Professor of Psychology and Neuroscience

  • Waco TX UNITED STATES

Professor Scullin’s research investigates how sleep physiology impacts memory, education, health, and aging.

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4 min

Sleep Better, Live Better: Improving Sleep Quality Can Lead to Less Stress and Improved Cognition

Research has demonstrated that increased stress and all-night study sessions can lead to lower cognitive functioning and test scores, adding even more pressure on college students. Baylor sleep expert Michael K. Scullin, Ph.D., director of Baylor University’s Sleep Neuroscience and Cognition Laboratory and associate professor of psychology and neuroscience, studies how cognitive and behavioral processes are affected by sleep.“Sleep deprivation makes life worse. And it makes the person not getting enough sleep worse at life,” Scullin said. “However, if we focus on improving our sleep, life will get better, and we will get better at life.”Poor sleep is particularly common when students are studying for exams or working on major projects for classes. The combination of staying up late, cramming for tests, increased stress and bright light exposure late at night can lead to variable sleep durations and higher stress levels. “We know that as you accumulate sleep debt, whether it's from a single all-nighter or from weeks of variable sleep durations, it can exacerbate any pre-existing vulnerability a person may have to stress,” Scullin said. “For instance, if someone has a predisposition to panic attack disorder, sleep deprivation can increase panic attacks by about 40%. This applies to virtually any clinical or subclinical condition, whether it’s stress-related or not – sleep deprivation makes it worse.”Scullin added that even with a slight sleep deficit, any sort of negative event, such as a bad grade on a test, will feel much worse than it would for someone who is well-rested.“It becomes a cycle, and the individual begins to focus on what is worse instead of calming down at night and getting ready to fall asleep,” Scullin said.So how can a student – or any individual – break this cycle? It all starts with developing healthy sleep habits, which reduce stress and improve academic performance.Scullin suggests students try three Challenges to improve their sleep, mood and stress regulation.1. Illuminate! ChallengeOne class activity that Scullin has used with students for years is called the Illuminate! Challenge, which focuses on students adding more natural sunlight to their lives in the morning hours.“About 90% of students do not know that we need natural sunlight daily in the morning to tell our internal biological clock when to start ticking. When our biological clock knows it's time to start ticking, it will make us feel more alert, which helps improve our mood,” Scullin said.Specifically, he suggests:Spending 20 minutes daily outdoors in natural daylight during the morning hours.Be intentional with this time as something aside from walking to class or other daily routines.Take the time when you would normally be inside studying or eating breakfast to go outside instead.“Almost every one of my students who has taken this challenge has said their mood and alertness improved,” Scullin said.2. Deluminator ChallengeThe Deluminator Challenge eliminates light in your bedroom for a night of better sleep. Scullin said this challenge works by:Turning off all the lights and counting the number of artificial lights that exist in your environment. How many of your plugs have lights? How much light is coming in through your curtains?Cover up every light source (except fire alarms and other safety devices), including any light coming through windows. Blackout curtains are a good investment, or even using blankets to cover windows will help reduce light at night.It’s easy to adopt this challenge as it is sustainable once it is set. You will find that you can fall asleep easier and enjoy sleeping later in the morning because of the darker environment.“What normally happens is students see their devices are emitting unnatural light, and it is not nearly as dark as it should be,” Scullin said. “A lot of students in my classes report that this is their favorite challenge because it led to the biggest impact on sleep quality.”3. Anti-Rumination ChallengeLying in bed thinking about everything you need to do the next day can increase stress levels and interrupt sleep. In a recent study, Scullin found that taking five minutes to write a “to-do” list at bedtime helped student participants fall asleep about 10 minutes faster than others who used that time to chronicle completed activities:Take five minutes to write down a to-do list of everything that needs to be done the next day.The to-do list offloads stress, gives you a good action plan for the next day and helps you feel accomplished as you check off the goals.When people get more sleep – even just one more hour of sleep per night – “they literally become happier,” Scullin said. That extra hour of sleep can improve social relationships, emotional reactions and cognitive functioning. With improved cognitive functioning comes improved academic performance.“Adding more sleep to your life makes life better, and it's going to make you better at life. It's going to resolve some of the stress, and you're going to better handle events that are inherently stressful. You're going to enjoy life while you're also taking classes. And you know what? Your grades are probably going to improve.”

Michael Scullin, Ph.D.

4 min

Baylor Researchers Share Sleep and Memory Recall Tips to Help Tackle College Finals

It’s final exam season for college students across the country. And final exams often come with all-night study sessions and gallons of coffee. But do such things really help?In recent years, Baylor University researchers have identified a few practices that could help students get enough sleep and retain information for their exams.Here are some tips pulled from their research.Say No to All-NightersPoor sleep during finals is common as students sacrifice bedtime for study time. Students are under more stress, use more caffeine to stay awake and are exposed to more bright light. Fewer than 10 percent of undergraduates maintain the recommended average of 8 hours per night of sleep or even the recommended minimum of 7 hours of sleep per night.Baylor researchers Michael Scullin, Ph.D., assistant professor of psychology and neuroscience in Baylor’s College of Arts & Sciences and director of Baylor’s Sleep Neuroscience and Cognition Laboratory, and Elise King, M.I.D., M.A., assistant professor of interior design in Baylor’s Robbins College of Health and Human Sciences teamed together to find out if more sleep equaled better success.Their December 2018 study found that students who succeeded in averaging eight hours of sleep for five nights during final exams week did better than those who did not. Sleeping for eight hours was associated with a four-point grade boost.“Better sleep helped rather than harmed final exam performance, which is contrary to most college students’ perceptions that they have to sacrifice either studying or sleeping. And you don’t have to be an ‘A’ student or have detailed education on sleep for this to work,” Scullin said.King said students know that sacrificing sleep to complete school work is not a healthy choice, but they assume they don't have a choice, often remarking that there aren't enough hours in the day for coursework, extracurriculars, jobs, etc.“This removes that excuse,” King said.Sleep Consistency is KeyIn a study of sleep and creativity done in 2017, King and Scullin found that interior design students with highly variable sleep habits — cycling between “all-nighters” and “catch-up” nights — had decreased cognition in attention and creativity, especially with major projects.“Whether or not they ‘pull an all-nighter,’ when students cut their sleep, the effects are obvious,” King said. “They have trouble paying attention during class, and they aren't as productive during studio time.”To be successful at the challenge, students need to manage their time better during the day. Getting more sleep at night then allows them to be more efficient the next day.“By training students in their first year of college, if not earlier, that they can sleep well during finals week without sacrificing performance, we may help to resolve the ‘global sleep epidemic’ that plagues students in America and abroad,” Scullin said.Looking for Better Recall? Tell a Friend What You LearnedStudents who are given information and tell someone about it immediately recall the details better and longer, according to a 2017 study led by Baylor psychologist Melanie Sekeres, Ph.D., assistant professor of psychology and neuroscience in Baylor’s College of Arts & Sciences.She said this “replaying” method takes a lot of effort but is worth it in the long run.“A week later, the memory was just as good,” Sekeres said. “Telling someone else about what you’ve learned is a really effective way for students to study instead of just re-reading the textbook or class notes.”In the study, students were shown 24-second clips from 40 films over a period of about half an hour. The study focused on their retention of both the general plot of the films as well as such details as sounds, colors, gestures, background details and other peripheral information that allow a person to re-experience an event in rich and vivid detail, said Sekeres.“We tell students to test yourself, force yourself to tell someone about the lecture,” Sekeres said. “Even by writing out some question for yourself about the information, then later answering them yourself, you are more likely to remember the information. Unfortunately, simply re-reading or passively listening to a recording of your lecture in hopes of remembering the information isn’t a great study strategy by comparison.”ABOUT BAYLOR UNIVERSITYBaylor University is a private Christian University and a nationally ranked research institution. The University provides a vibrant campus community for more than 17,000 students by blending interdisciplinary research with an international reputation for educational excellence and a faculty commitment to teaching and scholarship. Chartered in 1845 by the Republic of Texas through the efforts of Baptist pioneers, Baylor is the oldest continually operating University in Texas. Located in Waco, Baylor welcomes students from all 50 states and more than 90 countries to study a broad range of degrees among its 12 nationally recognized academic divisions.

Michael Scullin, Ph.D.Elise  King, MID, M.A.

8 min

Considering a New Year's Resolution for 2019? Baylor Experts Can Help

WACO, Texas (Dec. 17, 2018) – As 2019 approaches, many Americans are considering ways to improve themselves via New Year’s resolutions.Whether it’s personal, like losing weight or clearing clutter, or it’s professional, such as being a better manager or breaking away from smartphones, the options are wide-ranging. Here is a listing of Baylor University research that might help advise those seeking positive change in the coming year.First and Foremost, Resolve not to Over-resolveOnly 10 to 20 percent of people keep their resolutions, says Sara Dolan, Ph.D., associate professor and graduate program director of clinical psychology. She advises setting “bite-sized goals instead of a massive behavior change.”Rather than giving up sugar completely or going all out at the gym, she advises achieving small successes before moving on.Ask Yourself: “Do I really want to work from home?”Many U.S. employees believe working from home – or at least away from the office – can bring freedom and stress-free job satisfaction. A 2018 Baylor University study says, “Not so fast.”The research, led by Sara Perry, Ph.D., assistant professor of management in Baylor University’s Hankamer School of Business, found that:Autonomy is critical to protecting remote employees’ well-being and helping them avoid strain.Employees reporting high levels of autonomy and emotional stability appear to be the most able to thrive in remote-work positions.Employees reporting high levels of job autonomy with lower levels of emotional stability appear to be more susceptible to strain.“Any organization, regardless of the extent to which people work remotely, needs to consider well-being of their employees as they implement more flexible working practices,” the researchers wrote.Read more here.Save Money by being a Better NegotiatorIn today’s retail climate, where stores struggle to keep up with online competition and customers can compare prices with the ease of their smartphones, the price tag is just a starting point for negotiations, said negotiation expert Emily Hunter, Ph.D., associate professor of management in Baylor’s Hankamer School of Business.“No longer do you need to pay sticker price for everything you buy. The customer is now empowered to have a say in pricing, and even hourly retail workers are often empowered to give price discounts when requested,” Hunter said.Hunter said negotiations – whether in a retail setting or in the workplace – require confidence.“Many people are hesitant to negotiate because they don’t know how or they are worried about the other person’s reaction (Will they think I’m greedy?),” she said. “But practice can increase your confidence in your ability to negotiate. Rejection is less common than you fear, and retail stores especially are often willing to work with you.”She offered the following tips to increase the chances of greater deals at the check-out counter.Resolving to Be More Generous in the New YearMany Americans already have enough “stuff,” and the gift-giving season sometimes adds to that collection of things we really don’t need. Instead of always receiving, how can we resolve to be more generous in the New Year?“Whatever our station, however much money or resources we have, we all have something to share and something to give,” says Andy Hogue, Ph.D., senior lecturer in Baylor’s Honors College who teaches a course on philanthropy and the public good. “I like the idea of thinking in terms of a New Year’s resolution, sort of resolving to be more generous and helping people to think in those ways.”Hogue offers individuals and families four ways to develop a spirit of generosity in the New Year.Home Cooking Saves Money, Encourages Better DietThe more home-prepared foods used, the less risk there is of eating too many calories and fat calories, says Baylor University nutrition expert Janelle Walter, Ph.D., professor of family and consumer sciences and Nutrition Sciences Program coordinator. Home cooking also saves money and allows for more fruits, vegetables and dairy products — which often are missing when pre-prepared products are used — as well as less fat, sugar and salt.Some tips for prepping at home are making a precise list, lining up recipes and lists of ingredients, shopping when you aren’t hungry and preparing five main dishes at a time to see you through a few days. Involve your family in choosing foods, shopping and preparing foods, Walter says. Many simple and quick recipes are on online sites, she said, referencing these from Southern Living.Consider a New Approach to DietingMeredith David, Ph.D., assistant professor of marketing in Baylor’s Hankamer School of Business, researched successful dieters and how they were different from others. Her research results have received national attention.“Our research shows that instead of creating rules to avoid one’s favorite treats, dieters should focus on eating healthy foods that they enjoy,” David said. “Dieters who restrict themselves from consuming the foods they love most may be setting themselves up for failure. Instead, they may be better off by allowing occasional ‘treats’ and focusing attention on healthy foods that they enjoy and making it a point to include those tasty but healthy foods in their diet.”Read the full article.Be Humble and HelpfulIn hard times, you know how much a helping hand means — and how humbling those times can be. So it might be good to resolve to look for opportunities to assist in 2019, while remembering not to pat yourself on the back for doing so.A decision to help someone else is influenced by time pressure, number of bystanders, empathy or a person's own distress — but that’s not all, says Baylor researcher Wade Rowatt, Ph.D., professor of psychology and neuroscience.“While several factors influence whether people will volunteer to help, it appears that humble people, on average, are more helpful than individuals who are egotistical or conceited.”Cultivate Patience — and Better Mental HealthPeople who are more patient toward others also tend to be more hopeful, grateful and satisfied with life, says Sara Schnitker, Ph.D., associate professor of psychology and neuroscience. And there is more than one type of patience, including interpersonal patience — dealing with annoying people without losing your cool; handling life hardships — such as illness or unemployment — without frustration or despair; and coping with such daily hassles as traffic jams, computer woes and long lines.In her research, Schnitker invited undergraduates to two weeks of patience training, where they learned to identify feelings and their triggers, regulate their emotions, empathize and meditate. If you want to build your own patience, she recommends following three steps: identify, imagine and sync.First, take a moment to slow down an identify how you are feeling and why you might be feeling that way. Second, try to imagine or reappraise the situation from a different perspective or in a new way that helps you to be calm. Finally, sync with your purpose. Try to connect how what you are doing or enduring helps you pursue larger goals or your life purpose.When Ailing, Talk to A Doctor Instead of Searching the Internet for AnswersRather than heading to the doctor — or even the medicine cabinet — some people turn first to the Internet when they are ailing , according to a Baylor University researcher.Especially for folks who have trouble handling uncertainty, "cyberchondria" — the online counterpart to hypochondria — worsens as they seek answers, says Thomas Fergus, Ph.D., an associate professor of psychology and neuroscience in Baylor's College of Arts & Sciences.“They may become more anxious. And the more they search, the more they consider the possibilities,” he says.Doubts about health also can trigger worries about medical bills, disability and job loss, he said. And that can lead to a Catch-22 of more Googling (sometimes of questionable sources). Rather than giving in to cyberchondria, resolve to call your doctor — and take what you read with a grain of salt.In Conflicts with your Significant Other, Relinquish PowerDuring spats with your spouse or significant other, the most common thing people want is not an apology, but a willingness to relinquish power, says Keith Sanford, Ph.D., professor of psychology and neuroscience in Baylor University's College of Arts & Sciences.That comes in many forms, among them giving a partner more independence, admitting faults, showing respect and being willing to compromise. Following closely behind the desire for shared control was the wish for the partner to show more of an investment in the relationship by such ways as sharing intimate thoughts or feelings, listening and sharing chores and activities, Sanford said.Sleep Better in the New YearWriting a “to-do” list at bedtime may aid in falling asleep, according to a Baylor University study by Michael K. Scullin, Ph.D., director of Baylor’s Sleep Neuroscience and Cognition Laboratory and assistant professor of psychology and neuroscience.Scullin's 2018 research compared sleep patterns of participants who took five minutes to write down upcoming duties versus participants who chronicled completed activities. Scullin suggests that writing a list may allow the brain to “offload” them instead of cycling through them repeatedly.Other hints: Use the bed for sleep rather than studying or entertainment; keep a regular sleep schedule; avoid electronics near bedtime; don’t take long day naps; and stay away from stimulants at least six hours before bedtime.Clear Out Clutter Without Getting Frazzled“Don’t try to organize the entire house in one weekend,” said Elise King, assistant professor in the department of family and consumer sciences. “You are much more likely to complete a task, especially one that you’ve probably been avoiding, if you break it into small goals. Don’t try to clean out an entire room over a weekend; instead, focus on the desk one week, the closet the next, and so forth.”Finally, involve your family, strive to make organization a routine — and reward yourself for your efforts.Break Away from the SmartphoneBaylor marketing researchers James Roberts and Meredith David, Ph.D. have conducted numerous studies on the effects of smartphone technology on relationships. Their studies on “phubbing” – phone snubbing – have garnered national and international interest, given the pervasiveness of smartphone technology and its impact on relationships.Their studies have found:Bosses Who “Phone Snub” Their Employees Risk Losing Trust and Engagement“Phubbing” can damage romantic relationships and lead to higher levels of depressionPeople who are phone snubbed by others are, themselves, often turning to their smartphones and social media to find acceptance“Although the stated purpose of technology like smartphones is to help us connect with others, in this particular instance, it does not,” David said. “Ironically, the very technology that was designed to bring humans closer together has isolated us from these very same people.”

Michael Scullin, Ph.D.Sara Perry, Ph.D.Emily Hunter, Ph.D.Meredith David, Ph.D.Elise  King, MID, M.A.Andy  Hogue
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Media

Biography

Dr. Scullin completed his doctorate in the Behavior, Brain, and Cognition program at Washington University in St. Louis and then a post-doctoral fellowship in the Neurology and Sleep Medicine program at Emory University School of Medicine. He is involved in service committees for the Sleep Research Society and the American Psychological Association and he co-founded the APA journal Translational Issues in Psychological Science.

Dr. Scullin’s research investigates how sleep physiology impacts memory, education, health, and aging. He is further interested in how we use memory to fulfill our daily intentions (a special kind of memory called “prospective" memory) as well as how lifestyle choices including exercise, diet, and medication adherence affect cognitive and neural functioning.

Areas of Expertise

Neuroscience
Sleep Physiology
Cognitive Neuroscience
Sleep Neuroscience and Cognition
Psychology
Sleep's Effect on Aging
Sleep's Effect on Memory
Sleep's Effect on Health

Accomplishments

Rising Star Award, Association for Psychological Science

2017

Brenda A. Milner Award, American Psychological Association

2015

Early Career Development Award, Sleep Research Society Foundation

2015

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Education

Washington University, St. Louis

Ph.D.

2011

Furman University

B.S.

2007

Media Appearances

Song Stuck in Your Head? What Earworms Reveal About Health

WebMD  online

2023-03-31

Michael Scullin, Ph.D., associate professor of psychology and neuroscience and director of the Sleep Neuroscience and Cognition Laboratory at Baylor, was quoted regarding earworms, a bit of music you can’t shake from your brain.

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Baylor sleep expert warns of cost of daylight saving time

Waco Tribune-Herald  online

2023-03-10

VIDEO: Michael Scullin, Ph.D., associate professor of psychology and neuroscience and director of the Sleep Neuroscience and Cognition Laboratory at Baylor, discusses the negative effect of spring daylight saving change on humans and why it can take up to a week to adjust to the change.

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Can Listening to Pop Music Help You Fall Asleep?

Verywell Health  online

2023-01-31

Baylor sleep researcher Michael K. Scullin, Ph.D., associate professor of psychology and neuroscience, says one of the main reasons music might help someone fall asleep is fairly simple: it can help you relax. However, if you’re experiencing insomnia, Scullin said listening to music shouldn’t necessarily be the first trick you try. Instead, it’s best to give stimulus control practices a shot.

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Articles

An implementation intention strategy can improve prospective memory in older adults with very mild Alzheimer's disease

British Journal of Clinical Psychology

2015

This study tested whether (1) very mild Alzheimer's disease (AD) is associated with impaired prospective memory (PM) for tasks that are supported by either spontaneous retrieval (focal PM) or strategic monitoring (non-focal PM) and (2) implementation intention (II) encoding could improve PM performance in very mild AD.

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Sleep, Cognition, and Normal Aging Integrating a Half Century of Multidisciplinary Research

Perspectives on Psychological Sciences

2015

Sleep is implicated in cognitive functioning in young adults. With increasing age, there are substantial changes to sleep quantity and quality, including changes to slow-wave sleep, spindle density, and sleep continuity/fragmentation. A provocative question for the field of cognitive aging is whether such changes in sleep physiology affect cognition (e.g., memory consolidation). We review nearly a half century of research across seven diverse correlational and experimental domains that historically have had little crosstalk. Broadly speaking, sleep and cognitive functions are often related in advancing age, though the prevalence of null effects in healthy older adults (including correlations in the unexpected, negative direction) indicates that age may be an effect modifier of these associations. We interpret the literature as suggesting that maintaining good sleep quality, at least in young adulthood and middle age, promotes better cognitive functioning and serves to protect against age-related cognitive declines.

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Cognitive correlates of hallucinations and delusions in Parkinson's disease

Journal of Neurological Sciences

2014

Hallucinations and delusions that complicate Parkinson's disease (PD) could lead to nursing home placement and are linked to increased mortality. Cognitive impairments are typically associated with the presence of hallucinations but there are no data regarding whether such a relationship exists with delusions.

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