A. constants
B. dependent variables
C. extraneous variables
D. independent variables
Related Mcqs:
- 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 ___________?
A. using a matched-subjects design
B. Higher IQ level relatively constant
C. running a double-blind experiment
D. randomly assigning subjects to groups - In an experiment studying the effects of different drugs on reaction time, each subject is presented with all of the conditions in the experiment. This is an example of ____________?
A. factorial design
B. within subjects design
C. between subjects design
D. quasi-experimental design - 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 - 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 - In an effort to prevent participants in an experiment from trying to confirm the researchers’ predictions, psychologists sometimes:
A. treat information about individual participants confidentially
B. deceive participants about the true purpose of an experiment
C. allow subjects to pick whether they are in the experimental or control group
D. allow people to decide for themselves whether they want to participate in an experiment - An experiment is performed to test the effects of sleep deprivation on rote memory. In this experiment, the dependent variable in the:
A. number of hours subjects go without sleep
B. rote memory scores
C. number of subjects deprived of sleep in the experimental group
D. correlation between hours of sleep and fatigue - 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 - A researcher wants to test the hypothesis that the number of bystanders affects the probability of helping behavior. She sets up three conditions, one with no bystanders, one with two bystanders and one with four bystanders. Which of the following is true?
A. there is one independent variable having three levels
B. there are three independent variables having one level each
C. there is one independent variable and three dependent variables
D. there is one independent variable having four levels - What procedure is used by experimenters to determine whether a difference between conditions of an experiment is large enough for us to have confidence in its validity?
A. Correlation coefficient
B. Scientific intuition
C. Statistical analysis
D. None of these - 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
