Science,  Women's Rights

Are girls discouraged from science and technology?

Verizon is not exactly one of my favorite companies (employees of their Wireless division in Brooklyn, New York, recently voted to unionize despite fierce resistance by management), but I appreciate the message of this ad produced by the company:

(It’s symptomatic of modern corporate values that it’s possible to be seemingly progressive on women’s issues while also being hostile to the basic right of workers to organize.)

But I wonder how our readers (especially our female readers) feel about the ad. Are such parental discouragements commonplace for girls? Does it reflect anything that happened to you while growing up? Is the problem not so much that girls are actively discouraged than that they are less likely than boys to be encouraged?