BSNC 5060: Quantitative Research Final
Exam Questions & Answers (Grade A+)
Extraneous variable -
correct answer ✅Something unwanted or unexpected that might
affect the dependent variable.
How can researchers control for extraneous variables? -
correct answer ✅• Use of a homogeneous sample
• Use of consistent data-collection procedures
• Manipulation of the independent variable
• Randomization
Internal validity -
correct answer ✅the degree to which the effects observed in an
experiment are due to the independent variable and not confounds
History threats -
correct answer ✅a threat to internal validity that occurs when it is
unclear whether a change in the treatment group is caused by the
treatment or by a historical event that affects everyone or almost
everyone in the group (e.g. breastfeeding ad campaign)
Maturation effects -
correct answer ✅threat to internal validity related to participant
, BSNC 5060: Quantitative Research Final
Exam Questions & Answers (Grade A+)
development or natural changes over time rather than the
intervention (e.g. children's expected cognitive development vs
learning strategy)
Instrumentation threat -
correct answer ✅a threat to internal validity that occurs when a
measuring instrument changes over time from having been used
before
External validity -
correct answer ✅extent to which we can generalize findings to
real-world settings
Selection effects -
correct answer ✅a threat to external validity; sample is not
sufficient to generalize to the greater population (e.g. participants
all graduate students when average education in population of
interest is 2 years of a bachelor's degree)
Reactivity effect -
correct answer ✅the tendency for people to alter their behavior
when they know they are being observed
Exam Questions & Answers (Grade A+)
Extraneous variable -
correct answer ✅Something unwanted or unexpected that might
affect the dependent variable.
How can researchers control for extraneous variables? -
correct answer ✅• Use of a homogeneous sample
• Use of consistent data-collection procedures
• Manipulation of the independent variable
• Randomization
Internal validity -
correct answer ✅the degree to which the effects observed in an
experiment are due to the independent variable and not confounds
History threats -
correct answer ✅a threat to internal validity that occurs when it is
unclear whether a change in the treatment group is caused by the
treatment or by a historical event that affects everyone or almost
everyone in the group (e.g. breastfeeding ad campaign)
Maturation effects -
correct answer ✅threat to internal validity related to participant
, BSNC 5060: Quantitative Research Final
Exam Questions & Answers (Grade A+)
development or natural changes over time rather than the
intervention (e.g. children's expected cognitive development vs
learning strategy)
Instrumentation threat -
correct answer ✅a threat to internal validity that occurs when a
measuring instrument changes over time from having been used
before
External validity -
correct answer ✅extent to which we can generalize findings to
real-world settings
Selection effects -
correct answer ✅a threat to external validity; sample is not
sufficient to generalize to the greater population (e.g. participants
all graduate students when average education in population of
interest is 2 years of a bachelor's degree)
Reactivity effect -
correct answer ✅the tendency for people to alter their behavior
when they know they are being observed
