When asked to watch a video and press a key each time a black-shirted player passed a basketball, most research participants remained unaware of an umbrella-toting woman strolling across the video screen. This illustrated Select one: blindsight. the cocktail party effect. inattentional blindness. dual processing.

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.