More than 4% of people have some form of synesthesia, a neurological condition that causes senses to link and merge. People with synesthesia may taste words, hear colors, or see calendar dates arrayed in physical space. Dr. Julia Simner, a professor of neuropsychology at the University of Sussex in the U.K., discusses the many forms of synesthesia, how synesthetes experience the world, and what scientists have learned from brain imaging studies about synesthesia. She also discusses her research on other sensory differences such as misophonia, an extreme aversion to specific sounds. Learn more about your ad choices. Visit megaphone.fm/adchoices

Borderline personality disorder is one of the most frequently diagnosed personality disorders, and one of the most misunderstood. Carla Sharp, PhD, of the University of Houston, discusses how BPD is diagnosed, defined and treated, how family members can help children and adults with BPD, and how the disorder fits in with researchers’ evolving understanding of personality disorders in general.   Links Carla Sharp, PhD   Speaking of Psychology Home Page Learn more about your ad choices. Visit megaphone.fm/adchoices

Most parents want to raise their children to be honest adults, so the first time that they catch their child in a lie it may come as an unpleasant surprise. But psychologists’ research has found that lying is a normal part of childhood. In fact, it’s a developmental milestone. Victoria Talwar, PhD, of McGill University, talks about why kids lie, how lying is tied to cognitive development, how children understand the morality of lying (including the “gray areas” of keeping secrets and tattling), and how parents can encourage truth-telling and honesty in their children.    Links   Victoria Talwar, PhD   Speaking of Psychology Home Page Learn more about your ad choices. Visit megaphone.fm/adchoices

The idea that people have biases that operate below the level of conscious thought is uncomfortable. But decades of research have found that many people who would never consciously agree with prejudiced statements against Black people, LGBTQ people or women can nonetheless harbor implicit biases toward these groups and others. Mahzarin Banaji, PhD, one of the pioneers of implicit bias research, talks about where implicit biases come from, the difference between implicit bias and prejudice, and which biases have lessened – and which have not – in recent years.     Links     Mahzarin Banaji, PhD     Speaking of Psychology Home Page   Learn more about your ad choices. Visit megaphone.fm/adchoices

Perfectionism might seem like a minor hurdle to overcome – or even a welcome personality trait. But perfectionism is different from simply striving for excellence and perfectionistic people are at higher risk for anxiety, depression and other mental health disorders. Perfectionism researcher Gordon Flett, PhD, and clinical psychologist Bonnie Zucker, PsyD, discuss where perfectionism comes from, why it’s an increasing problem, how it affects people’s mental and physical health and how to treat it. Links Gordon Flett, PhD Bonnie Zucker, PsyD Speaking of Psychology Home Page Learn more about your ad choices. Visit megaphone.fm/adchoices

How much insight do people have into why they behave the way they do? Science journalist Shankar Vedantam, host of the Hidden Brain podcast and author of “Useful Delusions: The Power and Paradox of the Self-Deceiving Brain,” talks about why he is fascinated by the paradoxes of human behavior, what it takes to bring the popular podcast to life, and why it’s important to show the public the challenges as well as the triumphs of science. Links The Hidden Brain Speaking of Psychology Home Page Learn more about your ad choices. Visit megaphone.fm/adchoices

For those of us who speak only one language, the idea of learning twenty or thirty sounds impossible. But there are “hyperpolyglots” who have managed this remarkable feat. Evelina Fedorenko, PhD, of the Massachusetts Institute of Technology, discusses what sets polyglots apart and what scientists might learn from studying them. She also discusses how language is processed in the brain, why it’s so much easier for kids to learn languages than adults, the relationship between language and thought and how we can think without language, and more. Links Ev Fedorenko, PhD Speaking of Psychology Home Page Sponsor Newport Health Learn more about your ad choices. Visit megaphone.fm/adchoices

Dozens of states are poised to outlaw or dramatically restrict abortion if the Supreme Court overturns its 1973 Roe v. Wade decision. Antonia Biggs, PhD, a social psychologist at the University of California San Francisco, talks about the results of the Turnaway Study, which examined how receiving an abortion – or being denied one – affects mental health and well-being, the effects of laws that limit access to abortion, and what a post-Roe future might look like. Links Antonia Biggs, PhD The Turnaway Study Speaking of Psychology Home Page Learn more about your ad choices. Visit megaphone.fm/adchoices

We all keep secrets – on average, people have about 13 secrets at any one time, five of which they have never told another person. Psychologist Michael Slepian, PhD, of Columbia Business School, talks about what types of secrets people keep, why keeping a secret bottled up inside can harm us, how keeping secrets -- or sharing them -- affects people’s relationships with each other, how we decide whom we can trust with our secrets, and whether other people can tell when we’re holding something back. Links Michael Slepian, PhD The Secret Life of Secrets Speaking of Psychology Homepage Sponsor Newport Healthcare Learn more about your ad choices. Visit megaphone.fm/adchoices

Digital interventions that promise to help you achieve your health and fitness goals are everywhere. But do these apps work and are they a useful public health tool? Gary Bennett, PhD, director of the Duke University Global Digital Health Science Center, discusses how digital interventions can help address obesity and other public health challenges, how to find apps that are effective and backed by research, the challenge of weight stigma, and more. Links Gary Bennett, PhD Speaking of Psychology Homepage Sponsors Newport Healthcare Learn more about your ad choices. Visit megaphone.fm/adchoices