12 Questions
Which of the following designs lacks a control group and random assignment?
One shot case study
What is the design called when there is only a posttest measurement with no pretest or follow-up measurement in both experimental and control groups?
Two groups posttest only
Which design has multiple interventions and many measurements?
Equivalent time-series
What is the design called when there is a pretest and posttest in the experimental group and only a posttest in the control group?
Solomon four group
Which design has an experimental group and a control group, with random assignment, but no pretest or follow-up measurement?
Two groups posttest only
What is the design called when there are multiple levels of a second factor, with random assignment, and at least a posttest?
Factorial
What is a characteristic of a one shot case study design?
It has no control group and only a posttest measurement.
Which design has an experimental and control group, with random assignment, pre- and posttest measurements, and sometimes follow-up measurements?
Classic experiment design
What is a key feature of an interrupted time-series design?
It has many measurements over time.
Which design compares two groups, with an experimental group and a control group, but lacks random assignment and pretest or follow-up measurements?
Static group comparison design
What is the primary difference between a Solomon four group design and a classic experiment design?
The number of measurements taken
Which design has an experimental group and a control group, with random assignment, but only a posttest measurement?
Two groups posttest only design
Study Notes
Research Design Types
- One Shot Case Study: No control group, no random assignment, only posttest
- One Group Pretest Posttest: No control group, no random assignment, pre- and posttest
- Interrupted Time-Series: No control group, no random assignment, many measurements
- Equivalent Time-Series: No control group, no random assignment, many measurements and multiple interventions
- Static Group Comparison: Experimental group and control group, no random assignment, no pretest or follow-up measurement
- Two Groups Posttest Only: Experimental and control group, random assignment, no pre-test or follow-up
- Classic Experiment: Experimental and control group, random assignment, pre- and posttest, sometimes follow-up measurements
- Solomon Four Group: Experimental and control group, random assignment, pretest and posttest vs. posttest only
- Factorial: Experimental and control group for each level of 2nd factor, random assignment, at least posttest
Research Design Types
- One Shot Case Study: No control group, no random assignment, only posttest
- One Group Pretest Posttest: No control group, no random assignment, pre- and posttest
- Interrupted Time-Series: No control group, no random assignment, many measurements
- Equivalent Time-Series: No control group, no random assignment, many measurements and multiple interventions
- Static Group Comparison: Experimental group and control group, no random assignment, no pretest or follow-up measurement
- Two Groups Posttest Only: Experimental and control group, random assignment, no pre-test or follow-up
- Classic Experiment: Experimental and control group, random assignment, pre- and posttest, sometimes follow-up measurements
- Solomon Four Group: Experimental and control group, random assignment, pretest and posttest vs. posttest only
- Factorial: Experimental and control group for each level of 2nd factor, random assignment, at least posttest
Test your knowledge of different research design types, including one shot case study, one group pretest posttest, and more. Identify the characteristics of each design and apply them to real-world scenarios.
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