. Defense scientists at the United States Army Research Institute of Environmental Medicine conducted a study on the effects of 200 mg of caffeine versus either a placebo or a non treatment control condition on target detection response time over 3 hours of a simulated sentry (soldier standing guard) duty task (figure below). Which is the dependent variable? 1800- Control Placebo 1700- Caffeine 1600- 1500- 1400- 1300- 1200- 1100- is Hours on sentry duty hours on sentry duty target detection response time number of soldiers taking placebo the concentration of caffeine Milliseconds
. Defense scientists at the United States Army Research Institute of Environmental Medicine conducted a study on the effects of 200 mg of caffeine versus either a placebo or a non treatment control condition on target detection response time over 3 hours of a simulated sentry (soldier standing guard) duty task (figure below). Which is the dependent variable? 1800- Control Placebo 1700- Caffeine 1600- 1500- 1400- 1300- 1200- 1100- is Hours on sentry duty hours on sentry duty target detection response time number of soldiers taking placebo the concentration of caffeine Milliseconds
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:. Defense scientists at the United States Army Research Institute of
Environmental Medicine conducted a study on the effects of 200 mg of
caffeine versus either a placebo or a non treatment control condition on
target detection response time over 3 hours of a simulated sentry (soldier
standing guard) duty task (figure below). Which is the dependent variable?
1800-
Control
Placebo
1700-
Caffeine
1600-
1500-
1400-
1300-
1200-
T100-
1.5
2.5
Hours on sentry duty
hours on sentry duty
target detection response time
number of soldiers taking placebo
the concentration of caffeine
Milliseconds
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