পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| একক-অন্ধ ক্ষেত্র পরীক্ষা (Single-blind Field Experiment)× | ক্লাস্টার র্যান্ডমাইজড ফিল্ড এক্সপেরিমেন্ট (CRFE)× | |
|---|---|---|
| ক্ষেত্র | পরীক্ষামূলক নকশা | পরীক্ষামূলক নকশা |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | Mid-20th century (blinding conventions formalised 1940s–1960s) | 1980s–1990s (formalized methodology) |
| প্রবর্তক≠ | Established practice in experimental social science and clinical research; codified by Campbell & Stanley (1963) and Shadish, Cook & Campbell (2002) | David M. Murray (group-randomized trials framework); applied broadly in public health and education research |
| ধরন≠ | Controlled field experiment with partial blinding | Randomized experimental design |
| মৌলিক উৎস≠ | Shadish, W. R., Cook, T. D., & Campbell, D. T. (2002). Experimental and Quasi-Experimental Designs for Generalized Causal Inference. Houghton Mifflin. ISBN: 978-0395615560 | Murray, D. M. (1998). Design and Analysis of Group-Randomized Trials. Oxford University Press. ISBN: 978-0195120424 |
| অপর নাম≠ | single-masked field experiment, field experiment with single blinding, single-blind natural-setting trial | CRFE, cluster-randomized trial in the field, group-randomized field experiment, community-randomized field experiment |
| সম্পর্কিত≠ | 6 | 4 |
| সারসংক্ষেপ≠ | A single-blind field experiment combines real-world experimental conditions with partial blinding: either participants or outcome assessors — but not both — are kept unaware of treatment assignment. This design reduces demand characteristics or observer bias while preserving ecological validity, making it a practical middle ground when full double-blinding is logistically infeasible in naturalistic settings. | A cluster randomized field experiment (CRFE) assigns intact groups — schools, villages, clinics, workplaces — rather than individuals to treatment or control conditions, and the experiment is conducted in real-world settings rather than a laboratory. Randomization at the group level controls for contamination between conditions while preserving the ecological validity of the natural environment. It is the dominant design for evaluating community-level, school-based, or workplace interventions in public health, education policy, and development economics. |
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