|  Which substances are most addictive?
Addiction is a huge problem worldwide—and affects nearly 250 million people worldwide. But which substances are most addictive? And what do they do to the brain? Learn more.
 Do You Have Insomnia and Live in the SF Bay Area?
We are looking for healthy people aged 55-80 for a study on cognitive training in people with insomnia—specifically, a sleep problem that causes distress or impairment in functioning (e.g., social, occupational). As a participant, you will be asked to complete about 4 sessions (2-3 hours each) of assessments in our office in San Francisco and 12 hours of cognitive training from home, and also wear a sleep monitoring watch at night. If you complete everything, you will be paid $260.
Interested? Email SLEEPrecruitment@positscience.com or call 415-568-3565 and mention that you’re contacting us for the sleep study.
 Chronic complainers are wired to be more negative
Do you complain a lot? You might want to try looking on the bright side more often. Researchers have found that chronic complaining can rewire your brain to be more negative. Even worse, complaining may lead to atrophy of brain areas related to memory and learning. Find out why.
 Cute animal photos are irresistible to the brain
Do you ever wonder why it’s so hard to resist clicking on a cute kitten picture? Blame your brain! Cute things like baby animals dose your brain with a hit of pleasure-inducing dopamine. The good news: this chemical flow can help you focus and concentrate in subsequent tasks. Learn more.
 BrainHQ Tips and Tricks
We are excited to announce that some pages on BrainHQ have been redesigned! We hope you enjoy exploring our new layout and images. Check it out now.
 Book of the Month
The Boy Who Could Run But Not Walk (2016)
Karen Pape, MD
In this ground-breaking book, Dr. Karen Pape provides a compelling mix of the latest discoveries in brain science with a professional memoir of her decades-long personal struggle to help children whom the medical profession had largely written off as beyond help. As a neonatologist, Dr. Pape became interested in why some babies with brain damage recover fully while others develop cerebral palsy. Her exploration of recent advances in brain plasticity led her to successfully apply those principles in treating patients and to strongly advocate for the medical profession to pay attention to treatment advances typically denied to most families. A compelling personal and scientific journey makes for a good read, filled with outrage, hope and promise. Buy from Amazon. | 
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Bilinguals have better attentional control 
Do dolphins “chat” like humans? 
“Short sleepers” may function fine on little sleep
