Quantitative Design Flashcards
An experimental design must have the following 3 components. (If one of these is missing, it is a “quasi-experiment.”)
Pre & post test; At least 2 groups; and Random assignment.
_____ ensures the groups are similar on everything but the treatment/intervention. It assures that groups have participants with similar characteristics.
This is important so we can be confident that if there is a difference between the groups, it is due to the intervention, not some other characteristic of the participants.
Randomizing groups
A time-series design with measurement of the dependent variable on single research subject.
Single-Subject Design (SSD). (A study of one)
_____ validity is the extent to which the experimental intervention really caused a change in the dependent variables. e.g., or was it something else?
Internal Validity
A study design where the researcher attempts to isolate the impact of an independent variable on the dependent variable under controlled conditions.
Experimental Design
Please notate a study that had a: pre-test, intervention, and post-test.
O X O
In an experimental design, “X” is the notation for _____ .
Intervention/Treatment
A study design where data is collected at a single point in time. Data can be about the past, present, or future. What is important is that it is collected all at once.
Cross-sectional Design
An experimental design in which a condition required to be a true experiment is not met (e.g., often times it is random assignment)
Quasi-experiment
In an experimental design, “O” is the notation for _____
Observation
In an experimental design, “R” is the notation for _____.
Random assignment (of participants to the control & treatment groups).
_____ validity is the extent to which the causal relationship found in the study can be generalized.
External Validity
A study design where data is collected a different points in time (longitudinal study or single subject design).
Time-Series Design
____ allows one to know the level before and after the intervention.
Pre- and post-tests
Dr. Kayze recruited pregnant women from her prenatal clinic to complete a questionnaire that measured their anxiety. The survey was administered from Jan 2013 to Dec 2014 to all females (willing to complete it) at 35 weeks of pregnancy. What type of study is this?
Cross-sectional Design
