:
teenage boys define themselves principally by their accomplishments and by their perception of themselves as competent individuals.
a. true
b. false
question 15 (true/false worth 1 points)
elementary school children define themselves principally by their accomplishments in school and their relationships with their peers and adults.
a. true
b. false

For the first question, I think the correct answer is false. Teenage boys do not define themselves principally by their accomplishments and by their perception of themselves as competent individuals. Rather, they define themselves by the friends that they have. 

For the second question, I think the answer is true. Elementary school children define themselves principally by their accomplishments in school and their relationships with their peers and adults.