Psych 2800 Lesson 12-16 correctly
answered passed
What are the two features of experimental design? - correct answer ✔✔1. Manipulate the independent
variable
2. Measure the effect of the manipulation on the dependent variable
What is internal validity? - correct answer ✔✔the degree to which data in a study reflect a true cause-
effect relationship
What is external validity? - correct answer ✔✔the degree to which the investigator can extend or
generalize a study's results to other subjects and situations
What is mundane realism? - correct answer ✔✔degree to which an experiment is superficially similar to
everyday situations
What is psychological realism? - correct answer ✔✔the extent to which the psychological processes
triggered in an experiment are similar to psychological processes that occur in everyday life
How can experiments ensure internal validity? - correct answer ✔✔Ensure that all conditions have been
manipulated
What is construct validity? - correct answer ✔✔the degree to which a test measures what it claims to be
measuring
How do you ensure construct validity? - correct answer ✔✔Control only differs in the one aspect you are
manipulated
What is statistical validity? - correct answer ✔✔the extent to which a study's statistical conclusions are
accurate and reasonable
, What are some power considerations? - correct answer ✔✔1. Study design
2. Size of effect
What is the typical power threshold for calculating power? - correct answer ✔✔0.80; 80%
What is power in experimental study? - correct answer ✔✔The odd that you will detect an effect if one
is present
If a study has low power but the expected effect is observed is the evidence strong? - correct answer
✔✔No; low power means less confidence that your results represent true population
What are three possible reasons for failed experiments? - correct answer ✔✔1. not enough power; low
N
2. effect does not exist
3. manipulation was not strong enough
What are manipulation checks? - correct answer ✔✔measuring the thing you are trying to manipulate to
show that there is a difference between control and treatment group
What are extraneous variables? - correct answer ✔✔any variables other than the independent variable
that seem likely to influence the dependent variable in a study
What is operationization? - correct answer ✔✔Conversion from research question to experiment design
How do we control extraneous variables? - correct answer ✔✔Limiting participants to one very specific
category of person
What are confounding variables? - correct answer ✔✔Differs across levels of the independent variable
(ex. intelligence)
answered passed
What are the two features of experimental design? - correct answer ✔✔1. Manipulate the independent
variable
2. Measure the effect of the manipulation on the dependent variable
What is internal validity? - correct answer ✔✔the degree to which data in a study reflect a true cause-
effect relationship
What is external validity? - correct answer ✔✔the degree to which the investigator can extend or
generalize a study's results to other subjects and situations
What is mundane realism? - correct answer ✔✔degree to which an experiment is superficially similar to
everyday situations
What is psychological realism? - correct answer ✔✔the extent to which the psychological processes
triggered in an experiment are similar to psychological processes that occur in everyday life
How can experiments ensure internal validity? - correct answer ✔✔Ensure that all conditions have been
manipulated
What is construct validity? - correct answer ✔✔the degree to which a test measures what it claims to be
measuring
How do you ensure construct validity? - correct answer ✔✔Control only differs in the one aspect you are
manipulated
What is statistical validity? - correct answer ✔✔the extent to which a study's statistical conclusions are
accurate and reasonable
, What are some power considerations? - correct answer ✔✔1. Study design
2. Size of effect
What is the typical power threshold for calculating power? - correct answer ✔✔0.80; 80%
What is power in experimental study? - correct answer ✔✔The odd that you will detect an effect if one
is present
If a study has low power but the expected effect is observed is the evidence strong? - correct answer
✔✔No; low power means less confidence that your results represent true population
What are three possible reasons for failed experiments? - correct answer ✔✔1. not enough power; low
N
2. effect does not exist
3. manipulation was not strong enough
What are manipulation checks? - correct answer ✔✔measuring the thing you are trying to manipulate to
show that there is a difference between control and treatment group
What are extraneous variables? - correct answer ✔✔any variables other than the independent variable
that seem likely to influence the dependent variable in a study
What is operationization? - correct answer ✔✔Conversion from research question to experiment design
How do we control extraneous variables? - correct answer ✔✔Limiting participants to one very specific
category of person
What are confounding variables? - correct answer ✔✔Differs across levels of the independent variable
(ex. intelligence)
