Research

UW researchers discovered an “unexpected finding” while studying the effects of alcohol and caffeine on sleep. Frank Song, a doctoral student of psychology at the UW, is quoted.

"Why do you tip? And have your reasons for tipping changed lately? Is there less gratitude in the mix and more — shall we say — fear?" writes columnist Peter Coy. Anthony Gill, professor of political science at the UW, is quoted.

Early research presented at the leading brain conference suggests that the pandemic changed the brains of teenagers. Patricia Kuhl, professor of speech and hearing sciences at the UW and co-director of the UW Institute for Learning and Brain Sciences, is quoted.

Pandemic-related lockdowns were hard on everyone, but a growing body of research suggests they were especially hard on young people. Now a new study scanning adolescent brain seems to be backing some of those suspicions. Patricia Kuhl, professor of speech and hearing sciences at the UW and co-director of the UW Institute for Learning and Brain Sciences, is interviewed. [This interview is part of a roundup and begins at 27:05]

Researchers from UW’s Department of Psychiatry and Behavior Sciences discovered that drinking your morning coffee and then an alcoholic beverage before bed cancels the negative effects on your sleep. Frank Song, a doctoral student of psychology at the UW, is quoted.

Hunting later at night may force the big cats to surrender their prey to larger carnivores, such as lions and leopards. Kasim Rafiq, a UW postdoctoral researcher in biology, is quoted.

Even the fastest animal in the world can't outrun the effects of climate change, according to experts. Cheetah populations are especially vulnerable to rising temperatures because hotter days are forcing them to behave more nocturnally, putting them in greater competition with other predators such as lions and African wild dogs, according to a study published in the journal Biological Sciences on Wednesday. Kasim Rafiq, postdoctoral scholar of biology at the UW, is quoted.

Tweens growing up with social media are inundated with rapidly changing beauty standards and the social pressure to conform to them. Lucía Magis-Weinberg, assistant professor of psychology at the UW, is interviewed.

Cheetahs are usually daytime hunters, but the speedy big cats will shift their activity toward dawn and dusk hours during warmer weather, a new study finds. The UW's Briana Abrahms, assistant professor of biology, and Kasim Rafiq, postdoctoral scholar of biology, are quoted.

The first week of November brings the end of Daylight Saving Time and return of Standard Time. Reporter Corey Olson sat down with UW Biology professor Horacio de la Iglesia to discuss the health benefits of staying in Standard Time permanently.

Over the course of some 44,000 years, humans occupying the island of Timor-Leste, just north of Australia, changed their methods of making stone tools in lockstep with climate change, according to a recent study in Quaternary Science Reviews. Ben Marwick, professor of anthropology at the UW, is quoted.

An interview with Dr. Loma Pendergraft on crow vocalization. Pendergraft — a current psychology lecturer in animal behavior-related classes — found interest in the noises the crows on the south side of the UW campus made as he fed them. This curiosity led to the experiment that comprised his master’s degree. 

Some are stubborn optimists. Others struggle with despair. Their faces show the weight they carry as they witness the impact of climate change. Kristin Laidre, associate professor of aquatic and fishery sciences at the UW and principal scientist at the Applied Physics Laboratory, and P. Dee Boersma, professor of biology at the UW, are featured.

A recent study reveals the fascinating evolutionary journey of bat teeth and jaws. With over 200 species mostly found in the American tropics, noctilionoid bats possess a wide variety of jaw structures that have adapted to different diets. Sharlene Santana, professor of biology at the UW, is quoted.

There are more than 200 species of noctilionoid bats, mostly in the American tropics. And despite being close relatives, their jaws evolved in wildly divergent shapes and sizes to exploit different food sources. A paper published Aug. 22 in Nature Communications shows those adaptations include dramatic, but also consistent, modifications to tooth number, size, shape and position. For example, bats with short snouts lack certain teeth, presumably due to a lack of space. Species with longer jaws have room for more teeth — and, like humans, their total tooth complement is closer to what the ancestor of placental mammals had.