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Dr Md Nazirul Islam Sarker

Why Assuming Variables Are Independent Is Risky

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Why Assuming Variables Are Independent Is Risky

Statistical independence is one of the most violated assumptions in social science, economics, public health, and data science. Treating variables—or observations—as independent when they are not can break inference, mislead policymakers, and inflate Type I errors.In real-world datasets, hidden dependence structures arise from clustering, networks, spatial proximity, common raters, and temporal patterns. Ignoring these structures … Read more

Research Without Dissemination Is Wasted

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Research-without-dissemination-is-wasted

A DOI is not impact. Publishing a paper does not ensure it reaches policymakers, practitioners, industry leaders, or affected communities. Without intentional dissemination, research becomes static—discoverable to a tiny group of academics and invisible to the people who need it most. The global research ecosystem now produces over 2.5 million papers annually, yet evidence use … Read more

Why Many Research Instruments Lack Face Validity—And How to Fix It

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Why Many Research Instruments Fail Face Validity

Face validity is the most intuitive—and often the most ignored—dimension of measurement quality. If respondents cannot immediately understand what a question measures, the resulting data become fragile, regardless of high Cronbach’s alpha, AVE, or composite reliability. Poor face validity leads to misinterpretation, satisficing, social desirability distortions, and ultimately flawed statistical conclusions. In reality, many survey … Read more

Negative Results Are Strategic Assets — Use Them

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Negative Results Are Strategic Assets—Use Them

Many researchers treat “null” or negative results as disappointments. But in truth, they are powerful decision fuel. They help prune weak theories, refine approaches, and guide smarter resource allocation. When reported properly, these results contribute to a more honest, efficient, and trustworthy research ecosystem. Why Negative Results Matter Preventing Publication Bias & Waste Enhancing Scientific … Read more

Why Your Research Method Must Fit Your Worldview

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Why Your Research Method Must Fit Your Worldview

Most rejected manuscripts fail not because the study is “weak,” but because the claims are not licensed by the paradigm the author claims to use. Reviewers today are trained to identify mismatch between a researcher’s worldview and their methodological choices. A research paradigm combines four elements: If these elements do not logically align, your findings … Read more

Why Glossy Infographics Fail in Research Communication

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Why Glossy Infographics Fail in Research Communication

Infographics have become a standard tool for sharing research findings. They promise quick understanding, visual appeal, and audience engagement. However, glossy design alone does not guarantee persuasive communication. In many cases, “pretty ≠ persuasive.”Research communication works only when visuals provide clarity, causality, and credibility—not gradients, 3D bars, or rainbow color palettes. Below is a deeper … Read more

Why Data Aggregation Masks Inequality and Vulnerability

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Why-data-aggregation-masks-inequality-and-vulnerability

Aggregated data often simplifies complex realities into a single number, such as a national poverty rate, an average test score, or a district-level health indicator. While these summaries support fast reporting, they also conceal inequality, mute vulnerability, and distort policy decisions. Policymakers, donors, and researchers frequently rely on aggregated indicators without examining underlying distributions. As … Read more

Innovation Isn’t Enough — Top Journals Want Theoretical Contribution

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Innovation Isn’t Enough—Top Journals Want Theoretical Contribution

In today’s publish-or-perish world, many authors believe that simply showing something new or interesting is enough to get their manuscript accepted. Yet, as editorial teams of leading journals stress, novelty alone won’t cut it. What matters more is how your work shifts or extends existing theory. Put differently: It’s not enough to ask “What’s new?” … Read more

Gender Dynamics Can Distort Fieldwork Findings

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Gender Dynamics Can Distort Fieldwork Findings

Most research projects treat gender as a demographic checkbox rather than a structural force that shapes how data is created. However, gender dynamics influence who speaks, what they share, and whether the information captured reflects lived realities. When gender is ignored during fieldwork, the entire evidence base can quietly become biased—leading to misleading conclusions and … Read more

Why Ethical Approval Doesn’t Ensure Ethical Research

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Why-ehtical-approval-does-not-ensure-ethical-research

Many researchers assume that once they receive an institutional review-board (IRB) or ethics committee approval, their ethical obligations are fully met. This assumption is risky and can lead to major integrity gaps in research. Ethical clearance is not a full guarantee of ethical conduct: it is only the starting line. The real ethical work takes … Read more