Adolescents with ________ parents show better adjustment and are better protected from the consequences of later adversity they may encounter

If one proposes the heritability of IQ is .80, which of the following statements is correct?

A large portion of IQ is determined by genetics. A large portion of IQ is determined by environment. 80% of IQ is determined by the X chromosome. 20% of IQ is determined by the X chromosome.

Some procedures which measure reaction time are problematic in that they allow participants to become familiar with an apparatus or the given task

Which of the following can decrease the likelihood of confounds regarding the above issues? A) Using a quasi-experimental design B) Using a within-subjects design C) Using a functional design D) Using a tachistoscope in your design