| data collection method(expression, study, type, research) |
| dependent variable(expression, study, type, research) |
| descriptive-longitudinal case study(expression, study, type, research) |
| independent variable(expression, study, type, research) |
| research problem(expression, study, type, research) |
| review type(expression, study, type, research) |
| statistical analysis plan(expression, study, type, research) |
| review(noun, type, design, collection, research) |
| case-control study(expression, design, collection, research) |
| case-study(noun, design, collection, research) |
| experiment with random assignment(expression, design, collection, research) |
| field experiment(expression, design, collection, research) |
| literature review(expression, design, collection, research) |
| meta-analysis(noun, design, collection, research) |
| naturalistic observation(expression, design, collection, research) |
| observational study(expression, design, collection, research) |
| quasi-experiment(noun, design, collection, research) |
| survey(noun, design, collection, research) |
| systematic review(expression, design, collection, research) |
| case study(expression, type, design, flexible, research) |