In a __________ within-subjects design, the treatment conditions are arranged in a systematic matrix, where each condition appears in every ordinal position equally often

A major reason that sustained attention improves in the preschool years is

A) a steady gain in children's ability to inhibit impulses and keep their mind on a competing goal. B) that adults use scaffolding to help children focus on one task at a time. C) that children become increasingly bored by novelty. D) that children become better at distinguishing appearance from reality.

In the context of parenting styles, which of the following statements is true?

A) Adolescents from authoritative homes have low self-esteem. B) Adolescents whose parents use the authoritarian parenting style are the most competent. C) Adolescents whose parents use the permissive parenting style are the most competent. D) Adolescents from authoritative homes show the most competent behavior.