Marina believes that high doses of caffeine slow a person's reaction time. to test this belief, she has five friends each drink three 8-ounce cups of coffee and hen measures their reaction time on a learning task. what is wrong with martina's research strategy?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

Which term is synonymous with natural rights according to enlightenment philosophers legal rights divine rights positive rights universal rights

Why was louis armstrong considered a jazz legend