________ refers to the loss of responsiveness in receptor cells due to constant stimulation

An example of a test that has predictive validity is

a) an eye exam. b) a midterm exam. c) an IQ test. d) a preference test.

Richardson, et al. (2014) foundfour times more residue from ____ in patients with Alzheimer's disease

a. pesticides c. carbon monoxide b. alcohol d. chlorine