1. The condition that occurs when a prior measurement affects the test unit's response to the experimental variable is the: a) main testing effect b) maturation effect c) interactive testing effect d) concomitant variation effect e) history effect
2. When, for example, Magazine Publishers Association commissions a study on impact of magazine advertising on purchasing of furniture, such study might be considered a case of: a) ritualistic research b) promotional research c) history bias d) panel loading e) primary data