U6D1-U5S1-2 - State the Research Question, Methodology & Select a Research Design and Justify your Research. - See Outline Attached.
Available Research Designs Based on Example Research Questions – PSL
Quantitative Research Designs
Research Design |
Example Research Question |
|
Experimental. |
Does cognitive therapy plus antidepressant medication result in lower depression scores in randomly selected depressed adult females after 20 weeks of treatment compared with either cognitive therapy or antidepressant medication alone? The question implies a cause-effect relationship. The use of random selection, coupled with random assignment to conditions, and the use of two control conditions, implies a true experiment. |
|
Quasi-experimental: Non-equivalent groups. |
Does exposure to violent videos or television programs reduce the prosocial behaviors of 3-year-olds in an urban daycare program compared with those of 3-year-olds not exposed to the violent programming? An effect of an independent variable (exposure) on a dependent variable (prosocial behaviors) and the use of a comparison or control group imply a cause-effect design. But the use of convenience sampling (non-random selection from an urban daycare program) reduces it to quasi-experimental design. The participant children should be randomly assigned to either the experimental group (exposed to the programming) or to a control group (not exposed). |
|
Quasi-experimental: Non-equivalent groups design. |
Is there a statistically significant difference in the productivity rates of a convenience sample of hourly employees compared with a matched sample of salaried employees in a manufacturing company in the Pacific northwest? Similar to the previous example. Two non-equivalent groups (non-random assignment) are compared on a dependent variable. A significant difference would suggest that the IV (hourly versus salary employment) may be a causal variable. |
|
Quasi-experimental: Regression-discontinuity designs. |
For adult undergraduate learners for whom English is a second language, is the Johnson Program as successful for those with lower scores on the TOEFL iBT as for those with higher TOEFL iBT scores? Here, two groups will be compared, but instead of random assignment to either the control or the experimental condition, assignment will be based on a pre-program screening cut-off score on a screening instrument (the TOEFL). This design is well-suited when it is desirable to see whether a treatment is beneficial to those with the most serious problem. |
|
Quasi-experimental: Repeated measures or time series designs. |
Does exposure to violent videos or television programs reduce the prosocial behaviors of 3-year-olds in an urban daycare program? The use of convenience sampling reduces this to quasi-experimental status, and the absence of a control or comparison group implies either a repeated measures or time series design. |
|
Non-experimental: Difference. |
Is there a statistically significant difference in depression scores between female spouses of non-combat-deployed service personnel compared with female spouses of combat-deployed service personnel? There are two groups being compared on one variable, depression. |
|
Non-experimental: Correlational. |
Is there a statistically significant positive correlation between education levels and income levels in European professional women between the ages of 30 and 60? Two variables are to be measured in a single population. |
|
Non-experimental: Descriptive. |
What are the failure rates of fourth grade readers in a special education remedial reading program in the rural upper Midwest? One variable, one measure. Purely describes the situation and nothing more. |
Qualitative Research Designs
1
2