Long-term use of marijuana ____

The modern era of stress research began

a. when Julian Rotter published a monograph reporting the ways in which an internal or external locus of control influences a person's health. b. when Susan Staples provided research evidence documenting the human response to environmental noise. c. when J. G. Courtney found that chronic work-related stresses were linked to colon and rectal cancers. d. when Hans Selye published a book detailing the ways in which heat, cold, toxins, and danger disrupt the body's equilibrium.

Amy's school records describe her as a monochromat. What can we assume about Amy's perceptual abilities?

a) She does not see color. b) She sees only two colors. c) She sees colors one at a time. d) She cannot remember words used to designate colors.