Giving placebos in drug experiments is necessary to:

Related Mcqs:

1. In experiments, an image is quickly flashed and then replaced by a “masking” stimulus that inhibits conscious perception of the original image. In these experiments, the researchers are studying the effect of:

   A. Tinnitus
   B. Accommodation
   C. Blindsight
   D. Priming

2. Experiments based on cognitive dissonance theory have examined the relationship between behavioural compliance and attitude change. Which one of the following conclusions can be drawn from these experiments?

   A. Behavioural compliance never leads to attitude change
   B. The lesser the inducement for compliance, the more the attitude change
   C. The greater the inducement for compliance the more the attitude change
   D. Behavioural compliance always leads to attitude change

3. An experimenter conducts an experiments on the effects of a drug to control hallucinations. He declares the results to be “statistically significant,’ which usually means that:

   A. even though appropriate statistics were used, no differences could be detected between experimental and control groups
   B. the results have important implications for theory or practice
   C. differences between experimental and control group of this size occur by chance only 5 times out of 100 (or less)
   D. differences between experimental and control groups were so large they could never occur by chance alone

4. We wish to test the hypothesis that music improves learning. We compare test scores of students who study to music with those who study in silence, Which of the following is an extraneous variable in this experiments?

   A. the presence or absence of music
   B. the students test scores
   C. the amount of time allowed the studying
   D. silence

5. In Wolfgang Kohler’s experiments, a chimp is put in a cage containing three boxes and a banana suspended high above the animal’s head. After first trying to jump up to reach the banana, the chimp looks around them then stacks the three boxes so it can climb up to the banana. This is an example of _____________?

   A. trial and error
   B. latent learning
   C. insight learning
   D. shaping

6. In Pavlov’s experiments with dogs, salivation was the

   A. conditioned response
   B. unconditioned stimulus
   C. conditioned stimulus
   D. unconditioned response

7. In Pavlov’s experiments with dogs the conditioned stimulus was the:

   A. food
   B. bell
   C. salivation to the food
   D. salivation to the bell

8. Towards the close of the 19th century, who, as a result of his experiments with animals, formulated laws of learning that seemed to confirm his belief concerning the trial and error nature of learning?

   A. William james
   B. Edward Thomdike
   C. G.Stanely Hall
   D. Charles H.judd

9. In experiments, placing subjects in experimental groups such that each subject has an equal probability of ending up in any experimental group is referred to as:

   A. random forecasting
   B. fandom selection
   C. random placement
   D. random assignment

10. Researchers use experiments rather than other research method in order to distinguish between:

    A. case studies and surveys
    B. random samples representative samples
    C. facts and theories
    D. causes and effects