Author Archives: ktb1@cornell.edu

 

Traditionally, scholars viewed intelligence as a set of basic mental skills to be assessed by an IQ test, in much the same way that a yardstick measures height—but Robert Sternberg, professor of human development in Cornell's College of Human Ecology, believes this approach shortchanges people who perform poorly on tests and harms society by leaving their talents unrecognized and undeveloped. He has traveled to remote locations in Africa, Asia, Alaska, and elsewhere to develop alternatives to conventional measures of intelligence. Read more

 

Why do our eyes open wide when we feel fear or narrow to slits when we express disgust? According to new research, it has to do with survival.

Cornell neuroscientist Adam Anderson and colleagues concluded that expressions of fear and disgust altered the way human eyes gather and focus light.

They argued that these changes were the result of evolutionary development and were intended to help humans survive, or at least detect, very different threats. Read more

 

Breakthroughs in how we understand the human brain's structure and internal communication networks are helping scientists track neurological changes over time.

Nathan Spreng, assistant professor at Cornell University's Department of Human Development, is using advancement in neuroimaging to better understand how the brain functions and changes as we age. His research currently focuses on large scale brain dynamics and their function in cognition.

One of the most exciting frontiers in this regard is the reconceptualization of the brain as a complex system of many large and constantly interacting networks of brain regions. Read more

By Bill Steele
Reprinted from Cornell Chronicle, May 1, 2014

 To find food and evade predators you have to evolve. Learning how to do that is the key to the computer game "Cellvival," set in a world of single-celled organisms.

To find food and evade predators you have to evolve. Learning how to do that is the key to the computer game "Cellvival," set in a world of single-celled organisms.

As in many computer games, the goal of “Cellvival” is to survive in a hostile environment. Unlike most others, though, this game teaches some basic science. And unlike a lot of educational games, it’s fun to play.

You play as Tetrahymena thermophila, a single-celled organism that lives in fresh water, trying to catch food and avoid being eaten, and ultimately to reproduce and survive as a species. When you get enough food, you can reproduce, and when you reproduce you can adapt. The trick is to choose traits that will make you better equipped to survive. There are trade-offs: Speed makes your organism less maneuverable, and vice versa. Instead of levels, the game puts you in different environments, and the traits that make you best fitted to survive will be different in each one.

Ithaca-area high school students have been playing – and enjoying – the game, and whether they realize it or not, learning how evolution works, how the characteristics an organism inherits interact with its environment. “In order to play a game, you have to learn how to play the game, so kids are used to getting information from games,” explained Andrew Jefferson, a graduate student in the field of human development, who spearheaded development of the game. “One reason we went with evolution is that it involves abstract things that are hard to visualize. In a game you can take something abstract and make it concrete and play with it and experiment. Even if they die [lose the game], that’s still teaching them something about how it works.”

The project grew out of Jefferson’s conversations with Walker White, director of the Game Design Initiative at Cornell (GDIAC). Coincidentally, White had just been approached by members of the College of Veterinary Medicine’s ASSET (Advancing Secondary Science Education with Tetrahymena) program, who were interested in creating educational games to go with laboratory modules they provide to biology teachers. Jefferson works with Steven Ceci, the Helen L. Carr Professor of Human Development, and human development professor Wendy Williams, and has recruited a team of computer science students as programmers. He will describe the project at the Games, Learning and Society conference in Madison, Wisconsin, June 11-14. You can try out the game yourself at the GDIAC showcase, May 16 in Carpenter Hall.

After some polishing, the game will be distributed free to teachers through the ASSET program, along with lab modules that let students work in the classroom with the real Tetrahymena organism. Several teachers around New York state have already expressed interest, Jefferson said. The game is available in PC and Mac versions, with an accompanying lesson plan to guide classroom discussion.

The challenge, Jefferson said, is to satisfy both kids and teachers. “Educational games get a bad rap,” he noted. “Kids compare it with the games they paid for. Often in educational games you’re just answering quiz questions. … But if you don’t have those questions, teachers ask if kids are learning the game but not learning the content. It’s a balancing act.” But so far, he said, reception has been favorable. When he demos the game to adults the response is often, “That looks a lot better than I was expecting from an educational game.”

Testing will soon move to Ithaca middle schools, and Jefferson plans to create more games, in particular one that teaches critical thinking skills. The work so far has been funded by the National Institutes of Health.

 

By Blaine Freedlander
Reprinted from Cornell Chronicle, April 24, 2014

Beyond the buds and the daffodils, another spring rite emerges: undergraduate research presentations.About 140 students presenting 115 individual pieces of research gathered for the 29th annual Cornell Undergraduate Research Forum April 16 at Duffield Hall, while 45 seniors convened for the Hunter R. Rawlings III Cornell Presidential Research Scholars Senior Expo 2014, April 17 at the Biotechnology Building.

Ranging from cancer research and possible pharmaceuticals for diabetics to cooking a better steak, almost 200 undergraduates conveyed their academic prowess.

Hunter R. Rawlings III Cornell Presidential Research Scholars presentations in the Biotech Building April 17. Photo by Lindsay France/University Photography

Hunter R. Rawlings III Cornell Presidential Research Scholars presentations in the Biotech Building April 17. Photo by Lindsay France/University Photography

Cornell Undergraduate Research Board

Michelle Duong ’14 showed that an environment influences food intake. In two focus groups – each before a bowl of chocolates – the people who discussed gym memberships ate fewer sweets than those who discussed a nonhealth topic.In her research, Shanique Alabi ’14 learned that Canada goldenrod (Solidago canadensis), which she found at the Cornell Plantations, may offer promise as a carbohydrate digestion blocker for diabetics.

Jessica Lebovits ’14, Nolan Reese ’15, Janet Kim ’15 and Olivia Roche ’15 studied the culinary learning process of off-campus college students to ascertain nutrition among young adults. Louis Levine ’16, Rachel DeMel ’14, Camille Kapaun ’14 and Paige Mintz ’15 learned how off-campus students manage their time in preparing meals with the aim of improving their meal choices.

Conor Gruber ’15 studied the early detection of circulating tumor cells in pancreatic cancer, working toward an assay that ascertains cellular nuances; and Karen Martin ’15 examined the process of RAC1 proteins as it relates to metastatic cancer.

While Marissa Tranquilli ’15, Simeon Markind ’14, Katherine Bruce ’14 and Benjamin Catanese ’14 characterized the carbohydrate content of the Ithaca Beer Company’s Apricot Wheat and Green Trail beers with high performance liquid chromatography-refractive index detection, other student chemists Janette Guijosa ’14, Sarah Goodnow ’14, Daniel C. Lee ’14, Harrison Specht ’14 and Ashley-Lauren Mighty ’14 provided an aroma profile of Ithaca Beer’s Flower Power IPA in various stages of production.

Rawlings Cornell Presidential Research Scholars

Rachel Lumish ’14 correlated pica behavior (consuming non-food items like chalk, ice, powder, soap and dirt) and its relationship with iron deficiency among pregnant teens. And Quinn Kelly ’14 analyzed bicycling policies in major American cities, with an eye toward improving sustainable transportation. He found that cities with the strongest bicycling organizations had the strongest cycling infrastructure and policies, and the largest amount of cyclists.

James Zen Yui ’14 showed how to save energy and grill a better steak by pre-cooking the meat in a vacuum-sealed plastic and storing it in water, which keeps the meat tender. When ordered in a restaurant, the juicy so-called sous vide steak is grilled for a few minutes.

To create equity in discrimination lawsuits (based on Title VII of the Civil Rights Act of 1964), Hannah Clark ’14 assembled a database of factors that correlate with larger settlements and relief clauses in settlement documents.

Spenser Reed  ’14 evaluated chicken as a potential model for an inexpensive and sensitive zinc biomarker to quickly assess human nutritional needs, while Joseph Edwards ’14 explained how he used electrospinning and electrospraying to create membranes that use biochar to trap volatile organic compounds, for possible use as a smokestack filter.

****

Department of Human Development well-represented!

Of the students involved in the presentations, 21 were Human Development majors or worked with a professor from the department: Victoria Atzl ’14, Martina Azar ’14, Olivia Butkowski ’16, Morgan Drucker ’14, Lara Gentilini ’14, Jeanie Gribben ’15, Amauri Gomez ’14, Azraa Janmohamed ’16, Corey Keane ’15, Kyle Kurkela ’14, Wei-Feng Lee ’16, Samantha Marfurt ’14, Meghan McDarby ’14, Nicole Meyers ’14, Hye Eon Park ’15, Carly Schuller ’16,  Leah Shabo ’16, Victoria Silverman ’15, Colleen Sullivan ’16, Masrai Williams ’15, Lilly Zhang ’14.

Related Links:
Hunter R. Rawlings III Cornell Presidential Research Scholars
Cornell University Research Board

Study: Facial expressions evolved from optical needs
The near-opposite facial expressions of fear and disgust are rooted in emotional responses that exploit how our eyes gather and focus light to detect an unknown threat, found a study by Cornell neuroscientist, Adam Anderson.
Low-income home strife drives earlier teen sex
Environmental influences – rather than genetic propensities – are more important in predicting the age when adolescents from stressful backgrounds become sexually active, reports a recent study by Jane Mendle.
Adapted arthritis program boosts participation
Enhancing an arthritis program’s content and delivery with help from community partners improved program attendance, while maintaining the same physical and mental health benefits as the original, reports a recent study by Cary Reid and Karl Pillemer.
Child abuse and neglect rise with income inequality
Income inequality increases the risk of child abuse and neglect according to a nationwide study by John Eckenrode and colleagues.
Book highlights memory’s role as social glue
Memory’s crucial impact on our ability to establish and maintain social bonds is the focus of Nathan Spreng’s new book.
New institute focuses on human brain research
The new Human Neuroscience Institute in Cornell’s College of Human Ecology, directed by Valerie Reyna, aims to advance research on the neural basis of human behavior.
Study: Ads can influence ‘smart’ false memories
Consumers who have a propensity to think more about decisions produce more false memories than those who process information at a more superficial level found a new study by Charles Brainerd and colleagues.
  New project to explore natural mentoring
Steve Hamilton has received funding from the William T. Grant Foundation for a study that aims to improve our understanding of natural mentoring relationships.
Young ‘pranksters’ skewed landmark sexuality study
A widely cited study in the mid-1990s appears to have misrepresented the number of homosexual and bisexual youth potentially because questions were answered incorrectly either on purpose or through misunderstanding, according to Ritch Savin-Williams.

Students in the News

Hooking up for the ‘wrong reasons’ tied to poorer health
College students’ intentions for engaging in casual sex influence how it affects their mental and physical health, reports a recent study by graduate student Zhana Vrangalova.

More Stories

‘Neurodinners’ offer smorgasbord of research ideas

The time is now to bring the fight to dementia

Ten money lessons from elderly Americans

Kids may suffer in gap between haves and have-nots

The ironic adverse effects of expertise

New Resources

Study reveals origins of facial expressions
Sternberg on culture, intelligence and education
Minority youth see science as a ticket up

 

By Ted Boscia
Reprinted from Cornell Chronicle, February 11, 2014

Vrangalova

Vrangalova

When college students have casual sex – “hooking up” – how it influences their mental and physical health depends in part on their intentions for doing it, finds a Cornell study.

Hooking up for the “wrong reasons” – peer pressure, to boost one’s self-esteem, hoping it will lead to a long-term relationship or coercion by intoxication or other means, according to examples given in the study – decreased students’ well-being compared to peers who refrained from casual sex. On the other hand, casual sex motivated by the “right reasons” – such as a self-directed desire for pleasure, intimacy or excitement – did not heighten these negative health effects.

“Why you engage in casual sex is more consequential for your physical and mental health than whether you do it,” said author Zhana Vrangalova, Ph.D. ’13 in the field of human development. Her paper, “Does Casual Sex Harm College Students’ Wellbeing? A Longitudinal Investigation of the Role of Motivation,” was published online Feb. 5 in the Archives of Sexual Behavior.

“There are a number of situational, personal, interpersonal and social factors that determine whether one’s casual sex experiences are good or bad for them,” Vrangalova said. “This study is one of the first to examine, and find evidence of, one such factor: motivation.”

At the start and end of an academic year, Vrangalova surveyed 528 Cornell undergraduates, recording their mental and physical well-being, number of casual sex partners, their motivations for hooking up and various demographic factors. Applying self-determination theory, a psychological measure of people’s intentions, she determined whether students hooked up for autonomous reasons – those that are self-directed and reflect one’s values – or non-autonomous factors, outside influences such as coercion or social pressure.

After controlling for demographics, personality traits, prior casual and romantic sex, and initial levels of well-being, hookups motivated by external forces were linked to lower self-esteem, higher depression and anxiety, and poorer physical health. Autonomous hookups were not linked to negative outcomes. (The study defined hookups as any form of genital contact between partners who were not in a long-term romantic relationship.)

“Most studies on the link between casual sex and health have only looked at the simple comparison between those who have hooked up as a single group and those who haven’t, and findings have often been inconsistent across different studies,” said Vrangalova, who did the work as part of her doctoral dissertation. “This study shows the importance of internal processes, such as motivation, as moderators for health outcomes.”

The results could help guide teachers, counselors and doctors advising young adults about sex by “shifting education, policy and clinical work away from uniform, one-size-fits-all strategies and messages regarding casual sex and its health consequences, and toward more individually tailored, and, thus, more useful, approaches,” the paper reports.

The study was funded by student grants from the Foundation for Scientific Study of Sexuality, the Society for the Psychological Study of Social Issues, and Cornell’s Human Ecology Alumni Association.

Ted Boscia is director of communications and media for the College of Human Ecology.

Related Information

By Linda B. Glaser
Reprinted from Cornell Chronicle, March 6, 2014

President Obama’s “Brain Initiative” aims to revolutionize brain research across the globe; two graduate students have launched an initiative to transform neuroscience research at Cornell. Their “cross-departmental neuroscience analysis group” held its first “Neurodinner” Feb. 13 in Corson-Mudd Hall, featuring make-your-own sandwiches, antipasto and conversation about neuroscience.

“There haven’t been avenues for people who do neuroscience across campus to get to know each other,” explained Joe DiPietro, a graduate student in neurobiology and behavior professor Joseph Fetcho’s lab. “This is a way for people to learn about the resources available to neuroscientists on campus and to create a better environment for collaboration – and for us all to become friends.” DiPietro organized the evening with Matt Lewis, also a graduate student in the field of neurobiology and behavior in the College of Arts and Sciences.

At the Neurodinner, graduate students, post-doctoral students, and faculty members from the Colleges of Arts and Sciences, Engineering, Agriculture and Life Sciences, and Human Ecology gave brief summaries of their research, illustrating how neuroscience research at Cornell occurs at every level, from micro to macro. Research projects ranged from studies of the nervous system at the level of individual neurons and proteins, to neural circuits and behavior, to the interaction of brain regions in insects, birds and mammals – as well as humans. A graduate student in the field of applied physics described his work developing better imaging tools, while engineers talked about applying neuroscience principles to machines and implementing properties of biological metabolism in robotic ecologies.

“An important goal of Neurodinner is to provide an avenue where people can bridge these different levels of analysis in neuroscience research,” said DiPietro. “The future of neuroscience is bridging the gaps between all these different areas.”

After introductions, attendees offered suggestions for future events that would include intellectual exchange and opportunities for socializing, as well as the chance to discuss research problems and hear perspectives from researchers in other fields.

While many Neurodinner participants described using similar techniques in their research – despite their widely divergent fields – others used novel equipment or approaches. Future Neurodinners will include presentations of laboratory techniques and equipment such as optogenetics (the use of light-sensitive proteins to control and monitor neurons), behavioral pharmacology (which studies the behavioral effects of psychoactive drugs) and Cornell’s new MRI machine.

Neurodinners will be held on the third Thursday of the month in Corson-Mudd Hall. The March 20 event will feature new faculty introducing themselves and their research and will include time for conversation.

Christiane Linster, professor of neurobiology and behavior and director of Cornell’s Program in Neuroscience, is also planning a symposium May 15 for Neurodinner participants and others to showcase their research.

Linda B. Glaser is staff writer for the College of Arts and Sciences.

Related Information

Neuroscientist Nathan Spreng, assistant professor of human development, co-authored an opinion piece in the Huffington Post, January 29th, highlighting the urgency for dementia research and treatments due to America's rapidly aging population.

Right now, approximately 4 million people have dementia in the United States. By 2030, this number will double, costing an estimated $400 billion in care. All of this money is used not for treatment, but to provide comfort and care during a slow and ugly period of decline. Spreng and his coauthor argue that the battle against dimentia is underfunded. Read more.