Pain thresholds to electrical stimulation were measured in 10 male volunteers us
ID: 3201240 • Letter: P
Question
Pain thresholds to electrical stimulation were measured in 10 male volunteers using the psycho-physical method of limits. The independent variable was the rate of decrease in the noxious stimulus in the descending trials; four rates were used ranging from slow to fast. The subjects were instructed to say "pain gone" as soon as all of the pain had disappeared. Following a series of practice trials, the subjects were given four trials with each of the five rates. The order of presentation of the rates was randomized independently for each subject. The dependent variable was the mean voltage applied when the subject said "pain gone" and was rated on a 0 to 100 point scale.
CHOOSE THE RIGHT ANSWER
Completely Randomized Design
Completely Randomized Block Design
Latin Square Design
Graeco-Latin Square Design
Factorial Design
A)Completely Randomized Design
B)Completely Randomized Block Design
C)Latin Square Design
D)Graeco-Latin Square Design
E)Factorial Design
Explanation / Answer
This is Completely randomized block design, Option B) because we can create blocks for all 10 male voluteers each block having 4 values(rates) ranging from slow to fast.
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