PBSI 302 Exam 2 questions well
answered 100% correct
Manipulation checks focus on the efficacy of the ___________ variable - correct answer
✔✔Independent
Random assignment controls for ___________; while matching controls for __________ -
correct answer ✔✔BOTH known and unknown factors; ONLY known factors
The concept of control applies to what kinds of research designs? - correct answer ✔✔All kinds
of research designs
Greater degrees of control results in higher levels of: - correct answer ✔✔Internal validity
What describes a moderator variable (m.v.)? - correct answer ✔✔Another IV that moderates or
influences the relationships between the IV and DV
It's a 3rd variable that differentially affects the relationship between IV and DV
A control for extraneous variables
Which is NOT a technique to reduce experimenter bias? - correct answer ✔✔Running
manipulation checks
Which of the following is NOT a potential problem with within-subject designs? - correct answer
✔✔Random assignment is impossible
,Single-blind procedures control for ________ effects but not for _________ effects - correct
answer ✔✔participant expectation; experimenter expectation
Eating habit differences between 30 year olds vs. 20 year olds is strongly affected by income.
Income is a(n) _________ variable - correct answer ✔✔Moderator
Drug dogs picking up on cues from their handler is an example of what? - correct answer
✔✔Experimenter expectancy
What are the potential problems with self-report? - correct answer ✔✔They can be more
subjective, less reliable, less valid
What is the one drawback of random assignment? - correct answer ✔✔Large sample size is
required
What is the single most important element in the scientific method? - correct answer
✔✔CONTROL
Control (experimental control) - correct answer ✔✔The emphasis is on the ability to restrain or
guide sources of variability (extraneous variable; threats) in research
With experimental control, we are concerned with our ability to rule out possible threats to our
study and also the extent to which we can rule out alternative explanations of the research
results
Extraneous variable - correct answer ✔✔Variable other than IV; variable that is not the focus of
the study but may confound the results if not controlled
Confounding variable - correct answer ✔✔an extraneous variable whose levels covary with that
of the IV
, Strategies to achieve/enhance control - correct answer ✔✔Random assignment
Subject as own control (within-subjects designs)
Matching
Manipulation checks
Instrumentation of response
Building nuisance variable into the experiment
Statistical control
Control experiment - correct answer ✔✔Specific type of research design
Experiments; control simply implies a control group
Random assignment is what creates the experimental group, control group, and manipulation
--Distinguishes it from other research designs and studies
Experimental control - correct answer ✔✔Techniques to maintain control and minimize threats
Random assignment to groups - correct answer ✔✔Controls for BOTH known and unknown
factors
answered 100% correct
Manipulation checks focus on the efficacy of the ___________ variable - correct answer
✔✔Independent
Random assignment controls for ___________; while matching controls for __________ -
correct answer ✔✔BOTH known and unknown factors; ONLY known factors
The concept of control applies to what kinds of research designs? - correct answer ✔✔All kinds
of research designs
Greater degrees of control results in higher levels of: - correct answer ✔✔Internal validity
What describes a moderator variable (m.v.)? - correct answer ✔✔Another IV that moderates or
influences the relationships between the IV and DV
It's a 3rd variable that differentially affects the relationship between IV and DV
A control for extraneous variables
Which is NOT a technique to reduce experimenter bias? - correct answer ✔✔Running
manipulation checks
Which of the following is NOT a potential problem with within-subject designs? - correct answer
✔✔Random assignment is impossible
,Single-blind procedures control for ________ effects but not for _________ effects - correct
answer ✔✔participant expectation; experimenter expectation
Eating habit differences between 30 year olds vs. 20 year olds is strongly affected by income.
Income is a(n) _________ variable - correct answer ✔✔Moderator
Drug dogs picking up on cues from their handler is an example of what? - correct answer
✔✔Experimenter expectancy
What are the potential problems with self-report? - correct answer ✔✔They can be more
subjective, less reliable, less valid
What is the one drawback of random assignment? - correct answer ✔✔Large sample size is
required
What is the single most important element in the scientific method? - correct answer
✔✔CONTROL
Control (experimental control) - correct answer ✔✔The emphasis is on the ability to restrain or
guide sources of variability (extraneous variable; threats) in research
With experimental control, we are concerned with our ability to rule out possible threats to our
study and also the extent to which we can rule out alternative explanations of the research
results
Extraneous variable - correct answer ✔✔Variable other than IV; variable that is not the focus of
the study but may confound the results if not controlled
Confounding variable - correct answer ✔✔an extraneous variable whose levels covary with that
of the IV
, Strategies to achieve/enhance control - correct answer ✔✔Random assignment
Subject as own control (within-subjects designs)
Matching
Manipulation checks
Instrumentation of response
Building nuisance variable into the experiment
Statistical control
Control experiment - correct answer ✔✔Specific type of research design
Experiments; control simply implies a control group
Random assignment is what creates the experimental group, control group, and manipulation
--Distinguishes it from other research designs and studies
Experimental control - correct answer ✔✔Techniques to maintain control and minimize threats
Random assignment to groups - correct answer ✔✔Controls for BOTH known and unknown
factors
