Wharton professor Jonah Berger draws on his research to explain the six steps that make products or ideas contagious.

Best friends Lydia Goldblatt and Julie Graham-Chang are as ready as they'll ever be to start junior high. But before they can try out the lessons they've learned about friendship and popularity, tragedy strikes: Lydia's mom is moving her family to London for six months. Separated for the first time, each of the girls must face bullies, secrets, and the challenge of standing up for herself. With the help of their trusty notebook, they try to keep...

After her parents' divorce, eighth-grader Rachel Lee joins her mother's new housecleaning business, which has her scrubbing bathrooms in her more popular classmates' homes and learning useful secrets.

When Megan makes a wish at 11:11 to reinvent herself at her new school, she finds herself with unexpected popularity, and wonders if magic was the key to her fresh start after all.

Thirteen-year-old Delia's obsession with being fashionable and popular at her elite private school turns scary when she acquires a cursed coat from the fashion house of Cruella De Vil.

Edie is known for her great outfits and stylish flair. She and her best friend Andrew spend a lot of time playing dress-up. The school hall is their runway. Edie loves the compliments and whispers of admiration, so much so that she begins dressing in increasingly outrageous outfits to get even more attention. No outfit is too bizarre, no costume too flamboyant for Edie. She's so busy coming up with her newest eye-catching ensemble that she doesn't...

Following the events of Camp Clique, it's Maisy's turn to get her former friend Bea accepted into a desirable social clique at school.

At the end of fifth grade, Ezra finally gets a phone and everything changes. The funny pictures he's posting on social media are getting lots of attention. Other kids are noticing him for the first time. Then he takes a photo that pushes things over the edge, and suddenly he's in the principal's office with his parents.

"Women are perceived as either strong and cold or weak and warm. An award-winning journalist and cohost of PBS's Amanpour and Company examines likability and empowers readers to reject an outdated image of leadership instead of reinventing themselves"--

"It's a frenemy showdown and Nikki Maxwell has the worst luck. Of all the schools she could have been assigned to for the student exchange week program, she's stuck at North Hampton Hills, her arch nemesis MacKenzie Hollister's new school. Even worse, there might just be someone at NHH who can out-MacKenzie MacKenzie! At least Nikki can write about every moment of drama in her diary, so readers won't miss a moment of it. Can the queen of dorks survive...