RESEARCH DESIGNS
1Basics
1.1Pilot Study
1.2Quantitative Research Design
1.3Qualitative Research Design
1.4Quantitative and Qualitative Research

 2Descriptive Research
2.1Case Study
2.2Naturalistic Observation
2.3Survey Research Design
2.4Observational Study

 3Covariance
3.1Case-Control Study
3.2Cohort Study
3.3Longitudinal Study
3.4Cross Sectional Study
3.5Correlational Study

 4Semi-Experimental
4.1Field Experiments
4.2Quasi-Experimental Design
4.3Identical Twins Study

 5Experimental
5.1Experimental Design
5.2True Experimental Design
5.3Double Blind Experiment
5.4Factorial Design

 6Review
6.1Literature Review
6.2Systematic Reviews
6.3Meta Analysis


Read more: Research Designs - How to construct an experiment or study