In North America, the average age of onset of puberty is about ____ years old for girls and _____ years old for boys

A very large-scale study of ADHD in Europe determined that the symptoms between boys and girls were similar, but that boys were more likely to have ____

a. additional conduct disorders b. delays in physical development, which included secondary sexual development later c. emotional problems and to be bullied by their peers d. minor delays in social development

Bystanders frequently fail to respond to an emergency because no one else is responding. We tend to rely on what others say and do when we are not sure of the nature of the situation or of what behaviors to engage in. This is known as ________

A) diffusion of responsibility B) the altruistic personality effect C) pluralistic ignorance D) selective altruism E) the implicit bystander effect