Quantitative Research Methodology Flashcards
(36 cards)
describes the research mode (quali/quanti, specific research type)
Research Design
target population & sample frame
respondents of the study
specific type of instrument that will be used as questionnaires, etc.
Instrument of the Study
instrument must pass the validity and reliability tests before it is utilized
establishing and validating reliability
- one of the many ways of establishing objectivity of research findings
- subjecting the data to different but appropriate statistical formulas and processes
statistical treatment
- concerned primarily with cause & effect relationship
- known as the “method of difference”
experimental design
there are variables that are not part of the study but are believed to influence the outcomes
experimental research
labeled threats to internal & external validity
intervening or extraneous variables
the degree to which changes in the dependent variable can be attributed to the dependent variable
internal validity
the degree to which changes in the dependent variable can be attributed to the extraneous variable
external validity
ability of a certain tool to measure what it intends to measure
validity
when the subjects or respondents of the study are not randomly selected
selection bias
enumerate the threats to internal validity
- selection bias
- maturation
- history
- instrumentation change
- mortality
- testing
when the experiment is conducted beyond a longer period of time during which most of the subjects undergo physical, emotional, and/or psychological changes
maturation
happens during the conduct of the study when an unusual event affects the result of the experiment
history
the instrument used in gathering the data must not be changed or replaced during the conduct of the study
instrumentation change
- when 1 or more subjects die, drop out, or transfer.
- participation in the experiment is not completed
Mortality
when a pretest is given to subjects who have knowledge of baseline data
testing
enumerate the threats to external validity
- experimenter effect
- hawthorne effect
- measurement effect
the characteristics of the researcher affect the behavior of the subjects/respondents
experimenter effect
respondents/subjects respond artificially to the treatment because they know they are being observed as part of the research study
hawthorne effect
subjects have been exposed to the treatment through taking the pretest
measurement effect
- Subjects are randomly assigned to groups
- A pretest is given to both groups.
- The experimental group receives the treatment while the control group does not
- A posttest is given to both groups
PRETEST-POSTTEST CONTROLLED GROUP DESIGN
- Subjects are randomly assigned to groups
- The experimental group receives the treatment while the control group does not.
- A posttest is given to both groups.
POSTTEST CONTROLLED GROUP DESIGN