The phenomenon of negative _________ explains why a pigeon will compulsively peck at a key light that precedes the delivery of food even though the key peck prevents the delivery of food

Because participants are measured only once in the cross-sectional design, researchers need not be concerned about such difficulties as __________ and __________

A) cohort effects; practice effects B) selective attrition; cohort effects C) cohort effects; biased sampling D) participant dropout; practice effects

Suppose a mental patient's family sues a state hospital for failing to provide minimal treatment. What court decision would the family's lawyer probably cite?

a. Rogers v. Okin (1979) b. United States v. Hinckley (1982) c. Wyatt v. Stickney (1972) d. Tarasoff v. Board of Regents of the University of California (1976)