পদ্ধতির তুলনা করুন

	প্র্যাগম্যাটিক ল্যাবরেটরি এক্সপেরিমেন্ট	ক্ষেত্র পরীক্ষা	পূর্ণ ফ্যাক্টোরিয়াল পরীক্ষামূলক নকশা	এলোমেলো নিয়ন্ত্রিত পরীক্ষা (RCT)
ক্ষেত্র	পরীক্ষামূলক নকশা	পরীক্ষামূলক নকশা	পরীক্ষামূলক নকশা	পরীক্ষামূলক নকশা
পরিবার	Process / pipeline	Process / pipeline	Hypothesis test	Hypothesis test
উদ্ভবের বছর	1967 (foundational distinction); 2009 (PRECIS operationalization)	1920s–1930s (agriculture); 1990s–2000s (social sciences)	1926	1948
প্রবর্তক	Schwartz & Lellouch (pragmatic–explanatory distinction); extended by PRECIS framework developers	Formalized by R. A. Fisher (1935); systematized in social sciences by Harrison & List (2004)	R. A. Fisher	James Lind (early precursor, 1747); modern formulation: Austin Bradford Hill & Medical Research Council (1948)
ধরন	Experimental design philosophy and study type	Experimental design	Parametric factorial experiment	Interventional comparative study
মৌলিক উৎস	Schwartz, D., & Lellouch, J. (1967). Explanatory and pragmatic attitudes in therapeutical trials. Journal of Chronic Diseases, 20(8), 637–648.	Harrison, G. W., & List, J. A. (2004). Field experiments. Journal of Economic Literature, 42(4), 1009–1055.	Box, G. E. P., Hunter, J. S., & Hunter, W. G. (2005). Statistics for Experimenters: Design, Innovation, and Discovery (2nd ed.). Wiley. ISBN: 978-0471718130	Schulz, K.F., Altman, D.G., Moher, D., for the CONSORT Group (2010). CONSORT 2010 Statement: Updated Guidelines for Reporting Parallel Group Randomised Trials. BMJ, 340, c332.
অপর নাম	pragmatic experiment, applied laboratory trial, practice-oriented lab experiment, pragmatic controlled experiment	field trial, natural field experiment, randomized field experiment, field RCT	factorial experiment, 2^k factorial, full factorial, Faktöriyel Deneme Deseni (Full Factorial, 2^k)	RCT, randomised controlled trial, clinical trial, Randomize Kontrollü Çalışma (RCT) Tasarımı
সম্পর্কিত	3	5	5	7
সারসংক্ষেপ	A pragmatic laboratory experiment is a controlled study conducted in a laboratory setting that prioritises external validity and real-world applicability over the stringent internal controls characteristic of purely explanatory experiments. Drawing on the pragmatic–explanatory continuum formalised by Schwartz and Lellouch (1967) and later operationalised in the PRECIS framework, it asks whether an intervention works under conditions that approximate actual practice rather than ideal circumstances, making findings directly actionable for decision-makers and practitioners.	A field experiment applies the logic of a randomized controlled trial in a naturally occurring, real-world environment rather than an artificial laboratory. Participants are randomly assigned to treatment and control conditions while going about everyday activities, allowing researchers to estimate causal effects with high internal validity while preserving a level of ecological realism that laboratory settings cannot offer. The design is especially prominent in economics, public health, political science, and development research.	A full factorial design is a parametric experimental method in which every combination of factor levels is tested simultaneously, enabling the estimation of all main effects and all interaction effects in a single study. Rooted in R. A. Fisher's foundational work on designed experiments (1926) and systematically developed by Box, Hunter, and Hunter (2005) and Montgomery (2017), the 2^k form tests k two-level factors across 2^k experimental runs and is the benchmark against which all other factorial designs are measured.	A randomized controlled trial (RCT) is the gold standard experimental design in clinical and health research, in which participants are randomly allocated to a treatment group or a control group so that the effect of an intervention can be measured with the highest possible degree of internal validity. The modern parallel-group RCT was formalized by Austin Bradford Hill and the Medical Research Council in their landmark streptomycin trial of 1948, and its reporting is governed today by the CONSORT 2010 guidelines (Schulz et al., 2010).