Answer:
it is not easy to measure
Explanation:
According to my research on studies conducted by various psychologists, I can say that based on the information provided within the question psychologists have made slower progress with emotion because it is not easy to measure. Sensation, Learning, and Memory are easier to measure and create experimental designs to study but emotion is harder to create experiments for because it works different and has many variables to consider.
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Patients with primary Syphilis will only one chancre sore with pain
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Low-frequency magnetic fields induce circulating currents within the human body. The strength of these currents depends on the intensity of the outside magnetic field. If sufficiently large, these currents could cause stimulation of nerves and muscles or affect other biological processes.
What is true about the blood pressure so B. is the right answer because the Artery walls help to maintain the blood pressure , even between the heart beats.