Denise plans to systematically investigate a research question through careful observation and experimentation. The toolbox of rules she will follow is called ______.

Which person would be most likely to show greater immune system problems?

a) Hayley, a 17-year-old who is studying for the SATs b) Amy, a 25-year-old whose cat just died c) Keith, a 65-year-old who has been caring for his mother who suffers from Alzheimer's d) Mark, a 40-year-old who just lost his job

The two especially important dimensions of parenting are

A) collaboration and nurturing. B) affection and compromise. C) consistency and understanding. D) control and warmth.