What “class of persons” does Taney consider to not be citizens of the United States?

In 1957, james vicary reported that subliminal messages in a movie reel ("eat popcorn") caused viewers to rush to the concessions stands. although his findings became famous, the problem is that

Which of the following scenarios is an example of attentional blink? click or tap a choice to answer the question. while grading a student’s essay, a professor does not notice the mistake in the following sentence: “metacognition is the the awareness of one’s own thought processes.” a waiter is telling two friends about the daily specials when a neighboring table erupts in laughter. the friends ask the waiter to repeat the last few items because their attention was diverted by the sudden loud laughs. you watch television while you study for a language exam. the next day, you are unable to recall the majority of the new vocabulary you thought you had memorized. you are at a loud concert, and you are able to concentrate on the music while blocking out the conversations around you, cell phone rings, and other irrelevant stimuli.

Endogamy is marriage within one’s own social category. select the best answer from the choices provided true or false