To "see" gradual variations in shading, we rely on cells that respond best to ___ but to "see" abrupt changes in light versus dark, we rely on cells that respond best to ___

Ms. Airy is an architect who specializes in elderly housing. Her buildings should have all of these design features EXCEPT:

A) fluorescent lighting or skylights. B) low-pile carpeting. C) grab bars in bathrooms. D) easy to open cabinets and shelves.

According to the article Spare the Rod, about punishment and aggression, the correlations between SES and aggression were:

(a) positive and large (b) positive and small (c) negative and large (d) negative and small