A researcher wishes to un an experiment, but is concerned that variations in the subjects’ intelligence quotients (Iq) might confound the results. All of the following are possible solutions to this problem except for ___________?

Related Mcqs:

1. The conditions that researcher wishes to prevent from affecting the experiment are called:

   A. constants
   B. dependent variables
   C. extraneous variables
   D. independent variables

2. When subjects in an experiment are chosen so that each has an equal chance of being in either the experimental group of the control group, we say that the subjects have been assigned:

   A. alternately
   B. hypothetically
   C. randomly
   D. consecutively

3. If someone already spreads the rumor about an experiment for being assessment of racist attitudes and the subjects then take care of not showing racist attitudes. The result of experiment will be __________?

   A. invalid
   B. biased
   C. error
   D. unreliable

4. In the simplest experiment, the two groups of subjects are treated exactly alike except for the ______________ variable.

   A. independent
   B. dependent
   C. extraneous
   D. hypothetical theory formulation

5. A researcher has children watch 30 minutes of violent television, and then counts the number of times they hit each other afterward in a one-hour play period as a measure of aggression. The researcher causes aggression, however this conclusion may be invalid because:

   A. all children are prone to aggressive behavior
   B. it is unethical to force children to watch violent television
   C. there was no control group
   D. aggression wasn’t operationally defined

6. A between subjects design is less efficient than a within subjects design because ____________?

   A. it has more subjects
   B. it has less validity
   C. it is less reliable
   D. it must deal with difference among subjects
   E. None of these

7. In a weight-reduction experiment, an overweight individual was given what the researcher called a new type of diet pill that would help curb the desire to eat in fact. the pill really contained powdered milk, but ever since the individual started taking the diet pill, he has reported that his desire to eat has decreased. This illustrates the:

   A. curvilinear relationship
   B. effect of extraneous variables
   C. natural experiment
   D. placebo effect

8. In my experiment I am going to investigate how sleep affects anxiety. The number of hours of sleep the subjects have been called the _________________variable.

   A. control
   B. experiential
   C. dependent
   D. independent

9. Dr. Jamil wants to study the effects of poverty on one’s self concept. To do this he interviews a group of subjects from the inner city once every five years for a period of 30 years. This experiment is an example of what type-of study?

   A. Correlational study
   B. cross sectional study
   C. Gesell’s dome
   D. longitudinal study

10. Dr. Jamshed wants to see if person’s IQ changes as they get older. To do this he takes three groups of subjects. Group i is made up of 10 years old, and Group III of 25 years old. Dr. Jamshed tests all three groups of their IQ level. The design of this experiment is called:

    A. longitudinal study
    B. more information is needed to determine the design of the experiment
    C. Gesell’s dome
    D. cross sectional study