PSY200 Research Methods in Psychology A Questions and Answers 2024
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Validity -answer- The degree to which the test, or instrument, measures what it is supposed to measure
Reliability -answer- The consistency, or repeatability, of a measure
External Validity -answer- Do the results apply to the broader population? Generalizability
Internal Validity -answer-...
PSY200 Research Methods in
Psychology A Questions and Answers
2024
Validity -answer- ✔The degree to which the test, or instrument, measures what it is
supposed to measure
Reliability -answer- ✔The consistency, or repeatability, of a measure
External Validity -answer- ✔Do the results apply to the broader population?
Generalizability
Internal Validity -answer- ✔Is the IV responsible for the observed changes in the DV?
Maturation -answer- ✔Changes due to growth or predictable changes i.e. time passing.
History -answer- ✔Changes due to an event that occurred during the study that are not
part of the treatment
Testing -answer- ✔Changes due to the effects of previous testing (Happens during
repeated measures testing)
Instrumentation -answer- ✔Any changes to the calibration of the measuring instrument
over the course of the study
A threat to internal validity when there are inconsistencies in data collection
Regression to the Mean -answer- ✔The tendency for extreme values of a variable to fall
closer to the group mean when retested.
Selection Bias -answer- ✔Any factor that creates groups that are not equal at the start
of the study. A result of improper or non-random selection
Attrition -answer- ✔Loss of participants during a study
Diffusion of Treatement -answer- ✔Changes in participants behaviour due to
information they obtained about conditions
Sequence Effects -answer- ✔Effects on performance in one condition due to experience
with previous conditions
PSY200 Research Methods In Psychology A
, PSY200 Research Methods In Psychology A
Subject Effects -answer- ✔Participants try to understand the study to know what they
"should do" to help the study
Demand Characteristics -answer- ✔Participants respond to subtle cues about what is
expected
Placebo Effect -answer- ✔treatment effect due to the expectation that treatment will
work
Experimenter Expectancy -answer- ✔In research, when researchers' biases and
expectations influence the outcomes of an experiment. They see what they are hoping
to see
Measurement Reactivity -answer- ✔Participants respond differently because they know
they are being observed
Test-Retest reliability -answer- ✔consistency of measures when the same test is
administered to the same person twice.
used to assess the consistency of a measure from one time to another
Inter-rater reliability -answer- ✔A measure of the degree to which two different
researchers or raters agree in their assessment.
Internal consistancy -answer- ✔estimate of the reliability that represents the consistency
of scores within a test
Correlational Hypothesis -answer- ✔There will be a RELATIONSHIP between Variable
A and Variable B
Differential Hypothesis -answer- ✔There will be a DIFFERENCE between Group A and
Group B on Variable A
Experimental Hypothesis -answer- ✔Predicts the relationship between the IV and DV -
Variable A will affect Variable B
Null Hypothesis -answer- ✔The hypothesis that states there is no difference between
two or more sets of data.
Operational Definition -answer- ✔A description of a property in concrete, measurable
terms
PSY200 Research Methods In Psychology A
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