8  Research: Meaning, Types, and Characteristics, Positivism and Post-positivistic approach to research

8.1 What the Syllabus Covers

The syllabus head has three examined parts:

  1. Meaning of research — what counts as research.
  2. Types of research — basic vs applied; descriptive vs analytical; quantitative vs qualitative; exploratory, explanatory, evaluative; longitudinal vs cross-sectional; conceptual vs empirical.
  3. Characteristics of research — the criteria that distinguish “research” from “ordinary inquiry”.
  4. Positivism vs Post-positivism — the two epistemological frames that underlie method choice.

The most-repeated PYQ patterns are: (a) type-matching (given a study, name its type), (b) characteristic identification, and (c) positivism vs interpretivism distinction.

8.2 Meaning of Research

8.2.1 Etymology

The word “research” comes from the Old French recherche (re + cerchier — “to search again”), itself from the Latin circare — “to go around, to wander in search of”. The etymology captures the spirit: searching for what is not yet known, often re-searching what was thought known.

8.2.2 Five Standard Definitions

TipFive Standard Definitions of Research
Author / Year Definition (paraphrased)
John W. Best & James V. Kahn (1989) “Research is the systematic and objective analysis and recording of controlled observations that may lead to the development of generalisations, principles or theories.”
C.R. Kothari (1985, Research Methodology) “Research is a scientific and systematic search for pertinent information on a specific topic.”
F.N. Kerlinger (1973) “Research is a systematic, controlled, empirical and critical investigation of hypothetical propositions about presumed relations among natural phenomena.”
P.M. Cook “Research is an honest, exhaustive, intelligent searching for facts and their meanings or implications, with reference to a given problem.”
Clifford Woody “Research comprises defining and redefining problems, formulating hypothesis, collecting, organising and evaluating data, making deductions and reaching conclusions, and at last carefully testing the conclusions.”

Across all five, three words recur: systematic, objective, empirical.

8.3 Characteristics of Research

TipTen Characteristics of Good Research
  1. Systematic — proceeds via a planned sequence of steps.
  2. Logical — uses inductive and deductive reasoning.
  3. Empirical — grounded in observable evidence, not opinion.
  4. Replicable / Reproducible — others can repeat and verify.
  5. Critical — examines its own assumptions and limits.
  6. Controlled — variables are isolated where possible.
  7. Original — adds new knowledge, not summary alone.
  8. Objective — minimises personal bias.
  9. Cumulative — builds on prior work.
  10. Generalisable (where possible) — findings transfer beyond the sample.
TipKerlinger’s Three Essentials

F.N. Kerlinger reduces these to three essentials: Systematic · Empirical · Controlled.

8.4 The Aims and Motivations of Research

8.4.1 Five Classical Aims

TipFive Aims of Research
  1. Exploration — investigate a new or under-explored phenomenon.
  2. Description — describe what is, accurately and systematically.
  3. Explanation — find causal mechanisms.
  4. Prediction — forecast future outcomes.
  5. Control / Application — change conditions to obtain a desired outcome.

Bertrand Russell summarised it: research aims to substitute belief with knowledge.

8.4.2 Motivations

TipMotivations Behind Research
  • Curiosity — pure inquiry, theoretical advancement.
  • Practical problem-solving — applied need (clinical, industrial).
  • Career / degree — MPhil, PhD, postdoc.
  • Recognition & funding — grants, awards, citations.
  • Social welfare — public health, policy, environment.
  • Intellectual joy — Polanyi’s “personal knowledge”.

8.5 Types of Research

Research can be classified along six axes. A single study can carry one tag from each axis.

TipSix Classification Axes
Axis Categories
By Purpose / Utility Basic (Fundamental / Pure) vs Applied
By Method of Inquiry Descriptive vs Analytical (Explanatory)
By Data Type Quantitative vs Qualitative
By Time Dimension Cross-sectional vs Longitudinal
By Mode of Conceptualisation Conceptual vs Empirical
By Setting / Goal Exploratory · Descriptive · Explanatory · Evaluative · Action 

flowchart TB
  R{Types of<br/>Research} --> P[By Purpose<br/>Basic vs Applied]
  R --> M[By Method<br/>Descriptive vs Analytical]
  R --> D[By Data<br/>Quantitative vs Qualitative]
  R --> T[By Time<br/>Cross-sectional vs Longitudinal]
  R --> C[By Concept<br/>Conceptual vs Empirical]
  R --> G[By Goal<br/>Exploratory · Explanatory · Evaluative · Action]
    classDef default fill:#003366,color:#ffffff,stroke:#ffcc00,stroke-width:3px,rx:10px,ry:10px;

8.5.1 Basic (Pure / Fundamental) vs Applied

TipBasic vs Applied — Side by Side
Dimension Basic / Pure / Fundamental Applied / Action
Aim Generate theory; expand knowledge Solve an immediate practical problem
User Other scientists Policymakers, practitioners, industry
Outcome Universal principle / law Local solution / product
Time horizon Long, often indefinite Short, time-bound
Example Einstein’s general relativity Aerospace engine optimisation
Education example How children form number concepts Designing a Class-5 maths textbook

8.5.2 Descriptive vs Analytical

TipDescriptive vs Analytical
Descriptive Analytical / Explanatory
Question What is? Why is it so?
Method Survey, observation, fact-finding Analyse existing data / variables
Variable manipulation None Examines causes / relations
Example Literacy rate by district Why does literacy correlate with female employment?

8.5.3 Quantitative vs Qualitative

TipQuantitative vs Qualitative
Quantitative Qualitative
Data Numbers, scales Words, images, sound
Method Survey, experiment, statistics Interview, observation, ethnography, case study
Goal Test hypotheses; measure Understand meaning; describe
Sample Larger; probability-based Smaller; purposive
Output Coefficients, p-values, models Themes, narratives, theory grounded in data
Anchor Positivism / Post-positivism Interpretivism / Constructivism

8.5.4 Cross-sectional vs Longitudinal

TipCross-sectional vs Longitudinal
Cross-sectional Longitudinal
Time One snapshot Repeated measurements over time
Variants — Trend, Cohort, Panel
Strength Cheap, fast Captures change
Weakness Cannot show change Attrition, cost
Example One-time literacy survey 2024 Same 500 children tracked from age 6 to 18

Three types of longitudinal study: Trend (different samples over time, same population), Cohort (same group with shared experience over time), Panel (same individuals over time).

8.5.5 Conceptual vs Empirical

  • Conceptual — works with abstract ideas, theories, philosophical analysis. Examples: defining “justice”, deriving an equation.
  • Empirical — works with observation and experiment. Examples: survey, trial, ethnography.

8.5.6 Other Goal-Based Categories

TipFive Goal-Based Categories
  • Exploratory — open question, little prior literature.
  • Descriptive — characterise a phenomenon.
  • Explanatory — find causes.
  • Evaluative — judge the merit of a programme or intervention.
  • Action research (Kurt Lewin, 1946) — practitioner-led, cyclical: Plan → Act → Observe → Reflect.

8.6 Special Research Designs — A Working Vocabulary

These names recur in PYQs as types even though they are technically designs:

TipResearch Designs Often Asked as Types
Design One-line definition
Survey research Standardised questions to a sample to estimate population characteristics
Case study In-depth study of one (or a few) bounded unit(s) — person, organisation, event
Ethnography Long immersion in a community to describe its culture
Grounded theory Theory built bottom-up from data via constant comparison (Glaser & Strauss, 1967)
Phenomenology Study of lived experience (Husserl, Heidegger)
Narrative inquiry Analysis of stories as data
Historical research Past events reconstructed from documents and traces
Comparative research Two or more units compared on shared dimensions
Ex-post-facto Investigates causes of an effect that has already happened — no manipulation
Experimental Active manipulation of an IV under controlled conditions
Quasi-experimental Manipulation without randomisation (intact groups)
Mixed-methods Quantitative + qualitative integrated in one study

8.7 Positivism and Post-positivism — The Epistemological Frames

The biggest reason a researcher chooses one type over another is the epistemological frame they accept. The syllabus names two: Positivism and Post-positivism — but PYQs often expand into Interpretivism, Critical theory, Pragmatism.

8.7.1 Positivism

TipPositivism — Quick Card

Founder: Auguste Comte (1798–1857), French philosopher. Coined the term in Cours de philosophie positive (1830–42). Father of sociology.

Core claim: Knowledge is valid only if it can be observed empirically and verified by sensory experience or measurement. Reality exists independently of the observer.

Method: Hypothetico-deductive — generate hypothesis from theory, test against data.

Truth criterion: Verification (something is true if observation supports it).

8.7.2 Comte’s Law of Three Stages

Comte argued human thought evolves through three stages: Theological → Metaphysical → Positive (scientific).

8.7.3 Logical Positivism (Vienna Circle, 1920s–30s)

A radical descendant — Moritz Schlick, Rudolf Carnap, Otto Neurath. Verification principle: a statement is meaningful only if it can be empirically verified or is analytically true. Influenced behaviourism and quantitative social science.

8.7.4 Post-positivism

TipPost-positivism — Quick Card

Founder figure: Karl Popper (1902–1994). Critical successor to positivism.

Core claim: Reality exists, but our knowledge of it is imperfect, probabilistic and theory-laden. Pure objectivity is unattainable — but we can approximate it through rigour, triangulation and openness to refutation.

Method: Hypothetico-deductive but with falsification (Popper) as truth criterion — a theory is scientific only if it can in principle be refuted.

Truth criterion: Falsification rather than verification. A theory is provisionally accepted until refuted.

8.7.5 Key Post-positivist Ideas

TipPost-positivism’s Building Blocks
  • Falsification — Karl Popper, The Logic of Scientific Discovery (1959).
  • Paradigm shifts — Thomas Kuhn, The Structure of Scientific Revolutions (1962): normal science → anomaly → crisis → revolution → new paradigm.
  • Research programmes — Imre Lakatos: hard core + protective belt.
  • Methodological anarchism — Paul Feyerabend, Against Method (1975): “anything goes.”
  • Theory-ladenness of observation — Hanson, Quine — all observation depends on prior concepts.

8.7.6 Other Frames the Syllabus Implies

TipInterpretivism, Critical Theory, Pragmatism
Frame Lead figures Core claim
Interpretivism / Constructivism Max Weber (Verstehen), Wilhelm Dilthey, Edmund Husserl Social reality is socially constructed; understand meaning from the actor’s perspective
Critical Theory Frankfurt School — Adorno, Horkheimer, Habermas Research must expose power, ideology, and emancipate
Pragmatism Charles S. Peirce, William James, John Dewey Truth is what works; method should fit the question — mixed methods welcome

8.7.7 Positivism vs Post-positivism vs Interpretivism — Side-by-Side

TipThree Frames in One Table
Aspect Positivism Post-positivism Interpretivism
Ontology (what is real?) Single objective reality Objective reality but imperfectly knowable Multiple socially constructed realities
Epistemology (how do we know?) Detached, value-free observation Modified objectivity; theory-laden Subjective, empathic
Truth criterion Verification Falsification, probabilistic Coherence, plausibility
Preferred method Quantitative, experimental Quantitative + mixed Qualitative
Researcher’s role Outside observer Modified outsider Insider participant
Generalisation Universal laws Probabilistic generalisations Transferability, context-bound

8.8 Linking the Frame to the Method

flowchart LR
  PO[Positivism] --> Q[Quantitative<br/>Survey · Experiment]
  PP[Post-positivism] --> M[Mixed-methods<br/>Quantitative + Qualitative]
  IN[Interpretivism] --> QL[Qualitative<br/>Case · Ethnography · Phenomenology]
  CT[Critical theory] --> AR[Action / Emancipatory<br/>Participatory Action Research]
  PR[Pragmatism] --> MM[Method follows the question]
    classDef default fill:#003366,color:#ffffff,stroke:#ffcc00,stroke-width:3px,rx:10px,ry:10px;

The PYQ tells: “given a study, which paradigm best fits it?” — read off the diagram.

8.9 Quality Criteria — Validity, Reliability, Trustworthiness

TipQuality Criteria by Paradigm
Paradigm Quality criteria
Positivist / Post-positivist (Quantitative) Internal validity · External validity · Reliability · Objectivity
Interpretivist / Constructivist (Qualitative) (Lincoln & Guba, 1985) Credibility · Transferability · Dependability · Confirmability

Lincoln & Guba (1985) re-cast positivist criteria for qualitative work — the four “trustworthiness” criteria above.

8.10 Theory Anchors at a Glance

TipPersons, Years and Key Ideas
Person Year Contribution PYQ hook
Auguste Comte 1830 onwards Founded Positivism; Law of 3 Stages “Father of Positivism / Sociology”
Vienna Circle 1920s–30s Logical Positivism; verification Schlick, Carnap, Neurath
Karl Popper 1959 Post-positivism; Falsification The Logic of Scientific Discovery
Thomas Kuhn 1962 Paradigm shifts Structure of Scientific Revolutions
Imre Lakatos 1970s Research programmes hard core + protective belt
Paul Feyerabend 1975 “Anything goes” Against Method
Max Weber early 20th c. Verstehen; interpretivism Understanding social meaning
Glaser & Strauss 1967 Grounded Theory Bottom-up theorising
Kurt Lewin 1946 Action research Plan-Act-Observe-Reflect
F.N. Kerlinger 1973 Systematic-empirical-controlled definition Three essentials
C.R. Kothari 1985 Indian standard textbook definition Indian context
Lincoln & Guba 1985 4 trustworthiness criteria Qualitative quality
Habermas / Frankfurt School 1960s Critical theory Emancipatory paradigm
Dewey / James / Peirce early 20th c. Pragmatism Mixed-methods anchor

8.11 Practice Questions

Q 01 Etymology Easy

The word "research" derives from the Old French recherche, which literally means:

  • ATo answer
  • BTo prove
  • CTo search again
  • DTo publish
View solution
Correct Option: C
re- (again) + cerchier (to search) → "to search again".
Q 02 Definition Medium

"Research is a systematic, controlled, empirical and critical investigation of hypothetical propositions about presumed relations among natural phenomena." This well-known definition is by:

  • AC.R. Kothari
  • BF.N. Kerlinger
  • CJohn W. Best
  • DClifford Woody
View solution
Correct Option: B
F.N. Kerlinger (1973). His "three essentials": systematic, empirical, controlled.
Q 03 Characteristic Easy

Which of the following is NOT a characteristic of good research?

  • ASystematic
  • BEmpirical
  • CPersonal-bias driven
  • DReplicable
View solution
Correct Option: C
Research must be objective — the opposite of personal-bias driven.
Q 04 Type Medium

A study that investigates the relationship between mathematical concepts and cognitive development with no immediate practical use is BEST classified as:

  • AApplied research
  • BBasic / Fundamental research
  • CAction research
  • DEvaluative research
View solution
Correct Option: B
No immediate practical use, generates theory = Basic / Fundamental / Pure research.
Q 05 Type Medium

A college principal investigates which of two seating arrangements improves Class 12 board pass rates next year. This is BEST described as:

  • AAction research
  • BPhenomenological research
  • CPure / Basic research
  • DHistorical research
View solution
Correct Option: A
Practitioner solving a local problem in a cyclical Plan-Act-Observe-Reflect = Action research (Kurt Lewin, 1946).
Q 06 Time Medium

A researcher follows the SAME 500 children every year from age 6 to age 18 to study cognitive development. This is:

  • ACross-sectional research
  • BTrend study
  • CCohort study
  • DPanel study (longitudinal)
View solution
Correct Option: D
SAME individuals over time = Panel study — a longitudinal design. Cohort = shared experience group; Trend = different samples each time.
Q 07 Comte Medium

"Positivism" as a school of philosophy was given by:

  • AKarl Popper
  • BAuguste Comte
  • CMax Weber
  • DThomas Kuhn
View solution
Correct Option: B
Auguste Comte (1798–1857), Cours de philosophie positive, 1830s–40s. Also "Father of Sociology"; gave the Law of Three Stages (Theological → Metaphysical → Positive).
Q 08 Falsification Medium

"A scientific theory must be in principle falsifiable." This criterion was given by:

  • AAuguste Comte
  • BKarl Popper
  • CThomas Kuhn
  • DPaul Feyerabend
View solution
Correct Option: B
Karl Popper, The Logic of Scientific Discovery (1934 German; 1959 English). The mark of science is falsifiability, not verifiability.
Q 09 Paradigm Shift Hard

The idea that science progresses through "paradigm shifts" was popularised in 1962 by:

  • AKarl Popper
  • BThomas Kuhn
  • CImre Lakatos
  • DPaul Feyerabend
View solution
Correct Option: B
Thomas S. Kuhn, The Structure of Scientific Revolutions (1962). Sequence: normal science → anomaly → crisis → revolution → new paradigm.
Q 10 Three Stages Hard

Comte's Law of Three Stages of intellectual development is, in order:

  • AEmpirical → Rational → Positive
  • BTheological → Metaphysical → Positive
  • CMythical → Metaphysical → Empirical
  • DCognitive → Affective → Psychomotor
View solution
Correct Option: B
Comte: Theological → Metaphysical → Positive (scientific).
Q 11 Verstehen Hard

The concept of Verstehen (interpretive understanding) at the heart of qualitative / interpretivist research was given by:

  • AAuguste Comte
  • BKarl Popper
  • CMax Weber
  • DÉmile Durkheim
View solution
Correct Option: C
Max Weber — German sociologist. Social reality should be understood from the actor's perspective, not just measured externally.
Q 12 Positivism vs Interpretivism Medium

Which of the following is MOST associated with positivism?

  • AEthnographic fieldwork
  • BHypothesis testing through controlled experiment
  • CMultiple subjective realities
  • DPhenomenological description
View solution
Correct Option: B
Positivism uses controlled experiment and hypothesis testing. A, C, D are interpretivist.
Q 13 Grounded Theory Medium

Grounded Theory — building theory from data via constant comparison — was developed in 1967 by:

  • AGlaser & Strauss
  • BLincoln & Guba
  • CHusserl & Heidegger
  • DAdorno & Horkheimer
View solution
Correct Option: A
Barney Glaser & Anselm Strauss, The Discovery of Grounded Theory, 1967.
Q 14 Trustworthiness Hard

In Lincoln and Guba's (1985) four trustworthiness criteria for qualitative research, the parallel to QUANTITATIVE "internal validity" is:

  • ATransferability
  • BCredibility
  • CDependability
  • DConfirmability
View solution
Correct Option: B
Lincoln & Guba mapping: Credibility ↔ Internal validity; Transferability ↔ External validity; Dependability ↔ Reliability; Confirmability ↔ Objectivity.
Q 15 Type Medium

A study reconstructs the events around the Education Commission of India 1964–66 from archival documents. This is BEST classified as:

  • AExperimental research
  • BHistorical research
  • CEthnographic research
  • DSurvey research
View solution
Correct Option: B
Past events from documents and traces = Historical research.
Q 16 Ex-post-facto Hard

Ex-post-facto research is BEST described as:

  • AManipulation of the independent variable under controlled conditions
  • BInvestigation of causes of an effect that has already happened — without manipulation
  • CRepeated observation of a single group over time
  • DBottom-up theory generation from data
View solution
Correct Option: B
Ex-post-facto (Latin "from after the fact") — searches backward for causes. Cannot manipulate IV.
Q 17 Pragmatism Medium

The paradigm MOST associated with mixed-methods research is:

  • ALogical Positivism
  • BPragmatism
  • CCritical Theory
  • DPhenomenology
View solution
Correct Option: B
Pragmatism (Peirce, James, Dewey) holds that method should fit the question — naturally supports mixed methods.
Q 18 Critical Theory Hard

Research whose goal is to expose ideology and bring about social emancipation is rooted in:

  • APositivism
  • BPhenomenology
  • CCritical theory (Frankfurt School)
  • DConstructivism
View solution
Correct Option: C
Frankfurt School — Adorno, Horkheimer, Habermas. Research as emancipation.
Q 19 Categorisation Medium

Match each study with the BEST research type:

(i) A new drug is tested in a controlled trial (a) Applied
(ii) Anthropologist lives with a tribe for 18 months (b) Experimental
(iii) Survey: literacy rate by district (c) Ethnographic
(iv) Re-designing a textbook for Class 10 (d) Descriptive
  • A(i)-b, (ii)-c, (iii)-d, (iv)-a
  • B(i)-a, (ii)-b, (iii)-c, (iv)-d
  • C(i)-d, (ii)-a, (iii)-b, (iv)-c
  • D(i)-c, (ii)-d, (iii)-a, (iv)-b
View solution
Correct Option: A
Drug trial = experimental; tribe immersion = ethnographic; literacy rate = descriptive; textbook design = applied.
Q 20 Frame vs Method Hard

Match the research paradigm with the method MOST consistent with it:

(i) Positivism (a) Phenomenology
(ii) Interpretivism (b) Participatory action research
(iii) Critical theory (c) Mixed methods
(iv) Pragmatism (d) Controlled experiment
  • A(i)-d, (ii)-a, (iii)-b, (iv)-c
  • B(i)-a, (ii)-b, (iii)-c, (iv)-d
  • C(i)-c, (ii)-d, (iii)-a, (iv)-b
  • D(i)-b, (ii)-c, (iii)-d, (iv)-a
View solution
Correct Option: A
Positivism → experiment; Interpretivism → phenomenology; Critical theory → participatory action; Pragmatism → mixed methods.

8.12 Quick Recall

ImportantQuick recall
  • Etymology: re + cerchier (Old French) → “to search again”.
  • Definitions to remember: Kerlinger (systematic, controlled, empirical, critical), Kothari (scientific and systematic search), Best & Kahn (systematic objective analysis), Woody (defining-redefining-formulating-collecting-testing).
  • 10 characteristics: Systematic, Logical, Empirical, Replicable, Critical, Controlled, Original, Objective, Cumulative, Generalisable. Kerlinger’s three essentials: Systematic · Empirical · Controlled.
  • 5 aims: Exploration · Description · Explanation · Prediction · Control.
  • 6 classification axes: Purpose (Basic/Applied) · Method (Descriptive/Analytical) · Data (Quant/Qual) · Time (Cross-sectional/Longitudinal) · Concept (Conceptual/Empirical) · Goal (Exploratory/Explanatory/Evaluative/Action).
  • 3 longitudinal types: Trend (different samples) · Cohort (shared experience) · Panel (same individuals).
  • Action research (Kurt Lewin, 1946): Plan → Act → Observe → Reflect.
  • Designs: Survey, Case study, Ethnography, Grounded theory (Glaser & Strauss 1967), Phenomenology (Husserl), Historical, Ex-post-facto, Experimental, Quasi-experimental, Mixed-methods.
  • Auguste Comte (1798–1857): founded Positivism; Law of 3 Stages (Theological → Metaphysical → Positive); father of sociology.
  • Vienna Circle (1920s–30s): Logical positivism; verification principle.
  • Karl Popper (1959): Post-positivism; falsification as truth criterion.
  • Thomas Kuhn (1962): Paradigm shifts — Structure of Scientific Revolutions.
  • Imre Lakatos: Research programmes (hard core + protective belt).
  • Paul Feyerabend (1975): Against Method — “anything goes.”
  • Max Weber: Verstehen — interpretivist anchor.
  • Frankfurt School (Adorno, Horkheimer, Habermas): Critical theory — research as emancipation.
  • Peirce / James / Dewey: Pragmatism → mixed methods.
  • Lincoln & Guba (1985): 4 trustworthiness criteria (Credibility · Transferability · Dependability · Confirmability).
  • Positivism→Quantitative; Interpretivism→Qualitative; Pragmatism→Mixed; Critical theory→Action/Emancipatory.