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সাজানজনপ্রিয়তাA–ZZ–Aনতুনতম
research design

Comparative Survey Research

Comparative survey research is a quantitative non-experimental design that systematically collects structured survey data from two or more clearly defined groups, populations, or contexts in order to identify, describe, and analyze similarities and differences among them. It extends basic survey research by making comp

2টি উৎস
research design

Comparative Trend Research

Comparative trend research is a quantitative non-experimental design that tracks changes in one or more variables over time within two or more distinct groups or populations. By drawing independent cross-sectional samples from each group at multiple time points, it reveals whether trends diverge, converge, or differ in

2টি উৎস1970
field methods

Comparative Typological Analysis

Comparative typological analysis is a systematic method for classifying phenomena into types and then examining how those types differ, overlap, or share structural features across multiple cases, contexts, or cultures. Widely applied in linguistics, archaeology, law, and the social sciences, it moves beyond single-cas

2টি উৎস
qualitative

Comparative Visual analysis

Comparative Visual Analysis is a qualitative research design that systematically examines and compares visual materials — photographs, videos, artworks, advertisements, or digital images — across two or more cases, groups, time points, or contexts. By applying a consistent analytical framework to multiple visual corpor

2টি উৎস1986
experimental design

Completely Randomized Design

The completely randomized design is the most fundamental experimental design, in which experimental units are assigned to treatments entirely at random with no restrictions. Analysed by one-way ANOVA, it was formalised by R. A. Fisher in the 1930s and remains the reference starting point for experimental research whene

2টি উৎস1935
research design

Concurrent Case-Focused Mixed Methods

Concurrent case-focused mixed methods is a research design in which quantitative and qualitative data are collected simultaneously — rather than in sequence — and both strands are anchored within one or more bounded cases (e.g., a school, a program, a community, or an organisation). The two data strands are analyzed se

2টি উৎস2000
research design

Concurrent Embedded Mixed Methods Design

The concurrent embedded mixed methods design collects quantitative and qualitative data at the same time, but assigns unequal priority to the two strands: one (usually quantitative) serves as the primary study, while the other (usually qualitative) is nested inside it to answer a supplementary question. The embedded st

2টি উৎস2003
research design

Concurrent Exploratory Sequential Mixed Methods

Concurrent exploratory sequential mixed methods design is an advanced mixed methods configuration that combines two timing structures: a concurrent (simultaneous) data-collection phase alongside an exploratory sequential strand, in which early qualitative findings inform the development or refinement of a quantitative

2টি উৎস2000
research design

Concurrent Intervention Mixed Methods

Concurrent intervention mixed methods is a research design that embeds qualitative data collection within an experimental or quasi-experimental intervention study, with both data strands gathered simultaneously during the intervention period. Quantitative data assess intervention outcomes while qualitative data illumin

2টি উৎস2000
research design

Concurrent Mixed Methods Matrix

The concurrent mixed methods matrix is a mixed methods design in which quantitative and qualitative data strands are collected simultaneously and organized within a structured matrix framework. The matrix maps design dimensions — such as research questions, data sources, priority, and integration points — across rows a

2টি উৎস2000
research design

Concurrent Mixed Methods Meta-Inference

Concurrent mixed methods meta-inference is a research design in which quantitative and qualitative data strands are collected simultaneously and then subjected to a formal meta-inferential process — drawing a unified, overarching conclusion that transcends what either strand alone could produce. The concurrent timing m

2টি উৎস2003
research design

Concurrent Multiphase Mixed Methods

Concurrent multiphase mixed methods design combines the structural complexity of multiphase research — spanning several distinct project phases — with concurrent (simultaneous) data collection within each phase. At each stage, quantitative and qualitative data strands are gathered and analyzed in parallel rather than s

2টি উৎস2000
research design

Concurrent Pragmatic Mixed Methods

Concurrent pragmatic mixed methods is a research design that collects quantitative and qualitative data simultaneously within a pragmatic philosophical framework. Rather than privileging either positivism or constructivism, the pragmatic stance selects methods based on what best answers the research question. Both data

2টি উৎস2000
research design

Concurrent Transformative Mixed Methods

Concurrent transformative mixed methods design collects quantitative and qualitative data simultaneously, guided by a transformative theoretical lens — such as feminist, critical race, disability, or indigenous frameworks — that foregrounds equity, power, and social change. The design gives either strand equal or unequ

2টি উৎস2000
research design

Concurrent Triangulation Mixed Methods Design

The concurrent triangulation mixed methods design collects quantitative and qualitative data simultaneously, analyzes each strand independently, and then merges the results to assess whether the two data sources corroborate one another. Often called the convergent parallel design, it is one of the foundational configur

2টি উৎস2007
research design

Confirmatory Research

Confirmatory research is a deductive quantitative design in which the researcher specifies hypotheses derived from existing theory before data collection, then tests whether the data support or refute those hypotheses. Unlike exploratory approaches that generate ideas from data, confirmatory research begins with an est

2টি উৎস1934
experimental design

Conjoint Analysis

Conjoint analysis is a preference-measurement technique that decomposes overall product evaluations into the separate utility values — called part-worths — that respondents assign to each attribute level. Formalised by Green and Srinivasan in their seminal 1978 Journal of Consumer Research paper, the method has become

2টি উৎস1978
research methodology

CONSORT Reporting Checklist

The CONSORT (Consolidated Standards of Reporting Trials) Statement is a 25-item evidence-based checklist and flow diagram developed to standardize reporting of parallel-group randomized controlled trials. First published in 1996 and updated in 2010 (CONSORT 2010), it is endorsed by over 600 journals including The Lance

1টি উৎস2010
qualitative

Constant Comparative Method

The Constant Comparative Method (CCM) is a systematic qualitative analysis procedure in which every newly coded incident is immediately compared with all previously coded incidents in the same category. Introduced by Glaser and Strauss in their 1967 grounded theory framework, CCM drives theory development by cycling co

2টি উৎস1967
qualitative

Constructivist Grounded Theory

Constructivist Grounded Theory (CGT) is a qualitative methodology developed by Kathy Charmaz that systematically builds mid-range theory from empirical data through iterative coding, memo-writing, and theoretical sampling. Unlike the original objectivist version by Glaser and Strauss, CGT treats both data and theory as

2টি উৎস2000
qualitative

Content Analysis

Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitati

1টি উৎস2018
visual arts

Contrast Ratio Measurement

Contrast Ratio Measurement is a systematic method for quantifying the perceptual difference between two colors, typically foreground and background text or elements. Grounded in color science and accessibility standards, this pipeline calculates luminance-based contrast to ensure visual content is readable for all view

3টি উৎস2018
experimental design

Control chart

A control chart is a time-series graph with statistically derived upper and lower control limits that separates the natural, random variation of a process (common cause) from unusual, assignable variation (special cause). Invented by Walter Shewhart at Bell Labs in 1924, control charts remain the foundational tool of S

2টি উৎস1924
experimental design

Control Group Experimental Design

Control group experimental design is a fundamental experimental structure in which participants are assigned to at least two groups — a treatment group that receives the intervention and a control group that does not — so that the effect of the intervention can be isolated by comparing outcomes across groups. Randomisa

2টি উৎস1935
qualitative

Conversation Analysis

Conversation Analysis (CA) is a qualitative research method that examines the fine-grained sequential structure of naturally occurring talk and social interaction. Developed by sociologists Harvey Sacks, Emanuel Schegloff, and Gail Jefferson in the 1960s and 1970s, CA investigates how participants in a conversation acc

2টি উৎস1960
research methodology

COSMIN Checklist

COSMIN (COnsensus-based Standards for the selection of health Measurement INstruments) is a systematic framework and 10-item checklist developed by Mokkink et al. (2010) to evaluate the methodological quality of studies that assess the measurement properties of patient-reported outcome measures (PROMs), questionnaires,

1টি উৎস2010
qualitative

Critical Autoethnography

Critical autoethnography combines the self-reflective personal narrative of autoethnography with the social-justice orientation of critical theory. The researcher uses their own lived experience as primary data to interrogate power structures, systemic inequalities, and cultural norms — treating the personal not merely

2টি উৎস2000
field methods

Critical Case Law Analysis

Critical case law analysis applies the theoretical tools of Critical Legal Studies (CLS) to the examination of judicial decisions. Rather than accepting legal reasoning at face value, this approach interrogates how courts construct legal arguments, whose interests those arguments serve, and how ideological commitments

2টি উৎস1970
qualitative

Critical case study

A critical case study is a case study design in which the researcher deliberately selects a case that is strategically important for testing, confirming, challenging, or extending an existing proposition, theory, or policy claim. Rather than choosing a typical or representative case, the researcher argues that if the f

2টি উৎস1980
qualitative

Critical constructivist grounded theory

Critical constructivist grounded theory combines Kathy Charmaz's constructivist grounded theory with an explicit critical theoretical lens — typically feminist, critical race, or Freireian frameworks — to generate theory that not only explains a social process but also interrogates power relations, structural inequalit

2টি উৎস2000
qualitative

Critical Content Analysis

Critical content analysis is a qualitative approach that examines texts, media, and documents not merely for manifest meaning but for how they construct, reinforce, or contest relations of power, ideology, race, gender, and class. Grounded in critical theory traditions, it asks whose interests a text serves, what voice

2টি উৎস1980
field methods

Critical Curriculum Analysis

Critical curriculum analysis examines educational curricula — their content, organisation, and underlying assumptions — through a critical theory lens. Drawing on the work of Apple, Giroux, and Freire, it asks whose knowledge counts, whose interests the curriculum serves, and how schooling reproduces or challenges soci

2টি উৎস1970
qualitative

Critical Digital Ethnography

Critical digital ethnography is a qualitative research design that combines the immersive, participatory observation of digital ethnography with the power-conscious, emancipatory orientation of critical theory. Researchers embed themselves in online communities, platforms, or digital practices and examine not only what

2টি উৎস2000
qualitative

Critical Discourse Analysis

Critical Discourse Analysis (CDA) is a qualitative method that examines how language in texts and talk constructs, sustains, and challenges relations of power, ideology, and social inequality. Drawing on linguistics, social theory, and critical philosophy, CDA treats discourse not merely as communication but as social

2টি উৎস1970
field methods

Critical Doctrinal Legal Research

Critical doctrinal legal research combines traditional black-letter legal analysis — systematically mapping the rules, principles, and doctrines found in statutes and case law — with the evaluative lens of critical legal theory. Rather than treating legal doctrine as a neutral or self-contained system, it interrogates

2টি উৎস1970
qualitative

Critical Document Analysis

Critical document analysis is a qualitative method that systematically examines written, visual, or digital documents — such as policy texts, institutional reports, curriculum materials, and official records — through a critical theoretical lens. Rather than treating documents as neutral containers of information, it i

2টি উৎস2000
field methods

Critical Educational Action Research

Critical educational action research is a cyclical, participatory research design in which educators collaboratively examine and transform their own practice through iterative cycles of planning, action, observation, and critical reflection. Grounded in critical theory, it goes beyond improving techniques to questionin

2টি উৎস1986
field methods

Critical Hermeneutic Analysis

Critical hermeneutic analysis combines interpretive hermeneutics with critical social theory to read texts and discourse not only for meaning but for embedded power relations, ideological distortions, and structures of domination. Originating in Habermas's critique of Gadamer and developed further by Ricoeur's hermeneu

2টি উৎস1970
qualitative

Critical Hermeneutic Phenomenology

Critical hermeneutic phenomenology is a qualitative research approach that combines Gadamerian hermeneutics — the philosophical study of interpretation — with critical social theory to examine both the lived meaning of experience and the structural, ideological, and power-laden conditions that shape it. It asks not onl

2টি উৎস1960
qualitative

Critical Institutional Ethnography

Critical institutional ethnography (CIE) combines Dorothy Smith's institutional ethnography with an explicit critical theory lens to investigate how ruling relations, texts, and institutional discourses reproduce inequality and power asymmetries. Starting from the lived experiences of people positioned within or subord

2টি উৎস1987
qualitative

Critical Interpretative Phenomenological Analysis

Critical Interpretative Phenomenological Analysis (Critical IPA) is a qualitative approach that combines the double-hermeneutic interpretive work of standard IPA with an explicit critical lens, examining not only how participants make sense of their experience but also how power, social structures, ideology, and system

2টি উৎস1996
qualitative

Critical life history research

Critical life history research combines the biographical depth of life history methodology with critical theory perspectives — drawing on feminist, Marxist, postcolonial, or critical race frameworks — to examine how structural power relations, social inequalities, and institutional forces shape individual lives. Rather

2টি উৎস1980
qualitative

Critical Metaphor Analysis

Critical Metaphor Analysis (CMA) is a qualitative method for uncovering how metaphorical language constructs, legitimises, or contests power relations and ideological positions in texts. Developed by Jonathan Charteris-Black (2004), it integrates Conceptual Metaphor Theory with the evaluative concerns of Critical Disco

2টি উৎস2004
qualitative

Critical Narrative Inquiry

Critical narrative inquiry is a qualitative research approach that collects and analyses personal stories to expose how social structures, power relations, and systemic inequities shape individual experience. It merges the interpretive richness of narrative inquiry with the emancipatory commitments of critical theory,

2টি উৎস1990
qualitative

Critical Netnography

Critical netnography applies the ethnographic toolkit of netnography to online communities while foregrounding a critical theoretical lens — such as critical race theory, feminist theory, or postcolonial theory. Rather than merely describing online culture, it interrogates how power, inequality, and ideology operate wi

2টি উৎস1990
qualitative

Critical oral history

Critical oral history applies a critical theory lens to the collection and analysis of first-person spoken accounts of lived experience. It goes beyond preserving personal memory to interrogate how power, identity, race, class, gender, and structural inequality shape what is remembered, what is silenced, and how storie

2টি উৎস1970
qualitative

Critical phenomenology

Critical phenomenology is a qualitative research approach that merges classical phenomenological methods with critical theory to examine how structural forces — race, gender, class, disability, and other axes of power — shape and constrain lived experience. Rather than pursuing neutral description of universal essences

2টি উৎস2000
field methods

Critical Program Evaluation

Critical program evaluation is an approach to assessing programs that integrates critical theory with standard evaluation methods. It moves beyond measuring whether a program met its stated objectives to interrogating whose interests the program serves, how power and privilege shape its design and outcomes, and whether

2টি উৎস1970
qualitative

Critical Semiotic Analysis

Critical semiotic analysis is a qualitative method that examines how signs — words, images, gestures, sounds — construct and naturalise ideological meanings. Drawing on Roland Barthes's distinction between denotation and connotation, and on critical social semiotics developed by Kress and van Leeuwen, the approach move

2টি উৎস1957
qualitative

Critical single case study

A critical single case study is a qualitative research design that investigates one bounded, strategically selected case through a critical-theory lens, aiming not only to understand the case in depth but also to expose underlying power relations, structural inequalities, or ideological conditions that shape the phenom

2টি উৎস1984
qualitative

Critical Straussian Grounded Theory

Critical Straussian Grounded Theory combines the systematic coding procedures of Strauss and Corbin's grounded theory — open, axial, and selective coding leading to a paradigm model — with a critical theoretical stance that foregrounds power, inequality, and social structure. The researcher does not merely describe a s

2টি উৎস1990
research design

Cross-sectional causal-comparative research

Cross-sectional causal-comparative research compares two or more pre-existing groups — defined by a characteristic or experience that has already occurred — on one or more outcome variables, with all data collected at a single point in time. Because the presumed cause (group membership) precedes measurement but cannot

2টি উৎস1960
research design

Cross-sectional ex post facto design

A cross-sectional ex post facto design investigates presumed causal relationships by comparing groups that already differ on a key characteristic — all measured at a single point in time. Because the independent variable (e.g., smoking history, prior educational attainment) has already occurred and cannot be manipulate

2টি উৎস1964
research design

Cross-sectional Quantitative Content Analysis

Cross-sectional quantitative content analysis is an observational research design in which a systematically drawn sample of communicative content — news articles, social media posts, advertisements, or other symbolic material — is collected at a single point in time and coded using pre-defined numerical categories to d

2টি উৎস1952
experimental design

Crossover ABAB Design

The crossover ABAB design is a single-subject experimental design that alternates between baseline (A) and intervention (B) conditions twice within the same participant. By withdrawing and reintroducing the treatment, the researcher can demonstrate experimental control: if behavior improves with B and reverts with A, t

2টি উৎস1960
experimental design

Crossover Adaptive Experiment

An adaptive crossover experiment combines the within-subject efficiency of crossover designs — where each participant receives multiple treatments in sequence — with pre-specified adaptive rules that allow trial parameters to be modified based on interim data. Each participant acts as their own control across treatment

2টি উৎস1990
experimental design

Crossover Control Group Experimental Design

A crossover control group experimental design is an experimental approach in which participants are randomly assigned to sequences of conditions that include both a treatment and a control (no-treatment or placebo) period, with each participant experiencing both the experimental and control conditions in succession. By

2টি উৎস1980
experimental design

Crossover Design

A crossover design is an experimental design in which each participant receives all treatments under investigation, but in a different sequence and across separate time periods. Each subject thus acts as their own control, which substantially reduces between-subject variability and allows efficient treatment comparison

2টি উৎস1960
experimental design

Crossover Factorial Experiment

A crossover factorial experiment combines two powerful design principles: factorial structure, which studies multiple factors and their interactions simultaneously, and crossover structure, in which each participant receives more than one treatment combination across sequential periods. By serving as their own control,

2টি উৎস1920
experimental design

Crossover Field Experiment

A crossover field experiment is a within-subject experimental design conducted outside the laboratory in naturalistic, real-world settings. Each participant or unit receives multiple treatments in a randomized sequence, separated by washout periods, allowing researchers to observe causal effects while each unit serves

2টি উৎস1960
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