| 1. Domain | 1.1 Scope of the Domain | Boundaries | The range of phenomena the science includes and excludes. | Examines the internal structure of words and the rules by which meaningful units (morphemes) combine to form complex words. Includes inflection, derivation, compounding, reduplication, morphological parsing, agreement, case marking, and allomorphy. Excludes phonological alternations unless morphologically conditioned; excludes syntactic structure except where morphology interfaces with syntax. |
| | Scale | The spatial, temporal, or organizational level at which the science operates (e.g., quantum, cellular, social, cosmic). | Operates at the word and sub-word (morpheme) level; temporal scale corresponds to lexical access and morphological decomposition; organizational scale includes paradigms, feature bundles, and morphological classes. |
| 1.2 Ontological Commitments | Entities | The kinds of things assumed to exist within the domain (particles, organisms, agents, fields, etc.). | Morphemes, stems, roots, affixes, templates, morphological features (tense, number, case, aspect, gender), agreement markers, morphological paradigms, allomorphs, morphophonemic rules. |
| | Properties | The fundamental attributes these entities possess (mass, charge, genotype, preference, etc.). | Productivity, transparency, morphological complexity, compositionality, feature specification, paradigm completeness, regularity/irregularity, allomorphic alternation conditions, morphotactic constraints. |
| | Categories | The basic ontological types used to classify domain elements (substances, processes, relations, structures). | Inflectional vs derivational morphology; free vs bound morphemes; prefixes/suffixes/infixes/circumfixes; root-and-pattern systems; agglutinative vs fusional vs isolating vs polysynthetic morphological types; morphological classes and declensions. |
| 1.3 State-Variables | Variables | The measurable or definable properties that describe system conditions. | Feature values (number, gender, case, tense), morpheme order, stem alternation pattern, degree of productivity, paradigm slot occupancy, frequency of morphological forms, allomorph selection conditions. |
| | Parameterization | How variables encode and represent the system’s state. | Encoded through feature bundles, morphotactic templates, morphophonemic rules, paradigm tables, affix-selection rules, stem alternation patterns, distributional conditions for allomorphs. |
| 1.4 Admissible Idealizations | Simplifications | Conceptual reductions used to make the domain tractable (point masses, rational agents, perfect gases). | Treating morphemes as discrete units; assuming consistent feature–form mapping; ignoring irregular allomorphy; applying uniform morphotactics; modeling paradigms as complete and categorical; neglecting gradient productivity. |
| | Validity Conditions | The limits and contexts in which idealizations hold or break down. | Breakdown occurs with suppletion, irregular morphology, gradient morphological productivity, extensive morphophonology, mixed morphological typologies, or contact-induced morphological change. |
| 1.5 Domain Assumptions | Structural Assumptions | Background ontological stances such as determinism, continuity, randomness, discreteness. | Assumes words are built from meaningful units; morphemes map to features; morphological rules or schemas govern combination; paradigms exhibit internal structure; speakers mentally store or compute morphological patterns. |
| | Implicit Commitments | Unstated but necessary assumptions that shape the field’s conceptual structure. | Assumes morphemes are psychologically real; morphological patterns generalize to new forms; decomposition reflects mental representation; morphological categories align with syntactic/semantic roles; cross-linguistic patterns signify deeper universals. |
| 1.6 Internal Coherence Requirements | Consistency | The demand that domain concepts do not contradict one another. | Morpheme order must match morphotactic rules; feature values must align across a paradigm; allomorph selection must obey conditioning factors; morphological classes must behave coherently across forms; decomposition must mirror productive rules. |
| | Compatibility | The requirement that entities, variables, and assumptions fit together into a unified descriptive framework. | Requires alignment among morphological features, morphotactics, paradigmatic structure, morphophonology, and syntactic agreement systems so that the overall description forms a unified morphological architecture. |
| 2. Evidence Layer | 2.1 Observable Phenomena | Observables | The aspects of the domain that can produce detectable signals accessible to measurement. | Surface word forms; morpheme boundaries; inflectional endings; derivational affixes; stem alternations; allomorph distribution; paradigm gaps or irregularities; productivity of morphological rules; frequency of morphological patterns in corpora. |
| | Detection Limits | The boundaries of what can be resolved or sensed by current instruments or methods. | Morpheme boundaries may be ambiguous; suppletion obscures structure; phonological alternations may mask underlying morphemes; low-frequency forms may not reveal morphological patterns; speaker intuitions may be inconsistent across contexts. |
| 2.2 Measurement Systems | Units | Standardized quantifications (meters, seconds, volts, decibels, dollars, etc.) necessary for consistent comparison. | Token and type frequency; distributional probability; paradigm-slot occupancy; morphological complexity scores; productivity indices; affix-attraction metrics; morphological regularity ratings. |
| | Instruments | Devices and tools (microscopes, spectrometers, sensors, surveys, detectors) used to produce measurements. | Corpus-analysis tools; morphological parsers; annotation platforms; elicitation tasks; acceptability-judgment surveys; psycholinguistic reaction-time measures; computational alignment tools; morphological dictionaries. |
| 2.3 Operational Definitions | Definitions | Terms defined by specific measurement procedures, ensuring empirical clarity. | Definitions of morpheme segmentation, inflection vs derivation, allomorph, morphotactic legality, paradigm membership, productivity, feature bundle, stem alternation class. |
| | Procedures | The explicit steps required to perform a measurement in a reproducible way. | Annotating corpora for morphological structure; collecting elicitation sets; performing segmentation tasks; coding morphological features; generating paradigm tables; testing morphological productivity with nonce-word tasks. |
| 2.4 Data Acquisition | Protocols | Formal processes for gathering data under controlled or standardized conditions. | Controlled elicitation sessions; large-scale corpus sampling; longitudinal collection of word-formation patterns; cross-linguistic morphological surveys; speaker-judgment protocols; lexical-decision tasks. |
| | Sampling | Rules determining which subset of the domain is measured and how representative it is. | Sampling across registers, dialects, age groups, morphological environments (prefix, suffix, infix positions), word classes, inflectional categories, and cross-linguistic typologies. |
| 2.5 Data Character & Format | Data Types | The form raw evidence takes (time series, spectra, images, counts, qualitative records). | Annotated corpora; morpheme-segmentation files; paradigm tables; feature-specification matrices; allomorph distribution charts; productivity metrics; speaker-judgment datasets. |
| | Resolution | The granularity or precision with which data is captured. | Determined by corpus size, token frequency, accuracy of segmentation, granularity of feature annotation, morphological-tagging algorithms, and the precision of elicitation tasks. |
| 2.6 Reliability & Calibration | Calibration | Adjustment procedures ensuring instruments produce accurate results. | Standardizing annotation guidelines; calibrating morphological parsers across datasets; validating segmentation decisions through inter-annotator agreement; correcting misclassified affixes; ensuring consistent coding of paradigms. |
| | Error Characterization | Identification and quantification of noise, uncertainty, bias, and measurement error. | Segmentation ambiguity; annotation inconsistency; corpus sparsity; allomorph misidentification; overlooking irregular forms; phonologically conditioned misparsing; cross-linguistic category mismatch. |
| 3. Structural Layer | 3.1 Patterns & Regularities | Laws / Relations | Stable, repeatable patterns governing how observables behave across conditions. | Predictable affix-ordering constraints; morpheme-combination rules; consistent inflectional paradigms; recurrent derivational patterns; allomorphic alternation conditioned by phonology/morphology; cross-linguistic typological regularities. |
| | Invariants | Quantities or properties that remain constant under transformations (symmetries, conservation laws). | Stable feature bundles (e.g., tense, number, case); canonical inflectional patterns; persistent root shapes; recurring morphological classes; consistent morphotactic restrictions; invariant category boundaries across paradigms. |
| 3.2 Causal Architecture | Mechanisms | Underlying processes or structures that produce the observed regularities. | Rule-based morpheme combination; affix-selection mechanisms; morphophonemic processes; feature-unification mechanisms; paradigm-level generalization; analogical extension; blocking effects between forms. |
| | Pathways | Organized sequences of interactions forming a causal chain or network. | Root → derivation → inflection; underlying form → morphophonemic alternation → surface form; feature bundle → morpheme selection → morphotactic placement; analogical mapping → paradigm expansion. |
| 3.3 Theoretical Vocabulary | Concepts | Core terms that encode the domain’s structure (force, gene, equilibrium, field). | Morpheme, allomorph, feature bundle, paradigm, theme vowel, morphotactics, inflection, derivation, compounding, morphophonology, agreement, declension class, conjugation class. |
| | Classifications | Taxonomies, categories, or typologies that organize entities and relations. | Inflectional vs derivational processes; productive vs unproductive morphology; agglutinative vs fusional vs isolating vs polysynthetic types; morpheme classes (prefix, suffix, infix); paradigm structures (regular, irregular, suppletive). |
| 3.4 Formal Representations | Equations | Mathematical constructs expressing laws, relations, or mechanisms. | Feature–form mappings; morphotactic templates; allomorph-selection rules; rule schemas (X → Y / context); constraint rankings (OT); paradigm-function morphology equations; stem-selection or alternation formulas. |
| | Models | Structured representations—mathematical, computational, or conceptual—used to predict and explain phenomena. | Rule-based morphological grammars; paradigm-based morphology (PFM); realizational morphology; morpheme-based and word-based models; OT-based morphology; analogical and usage-based morphology; templatic (root-and-pattern) models. |
| 3.5 Idealized Structures | Simplified Models | Purposeful abstractions that capture essential dynamics while omitting irrelevant detail. | Strictly discrete morphemes; fully regular paradigms; one-to-one feature-to-form mappings; absence of suppletion; fixed ordering of affixes; no morphophonemic interference; complete paradigm symmetry. |
| | Limit Conditions | Regimes where specific models or approximations hold (classical vs. quantum, linear vs. nonlinear). | Irregular or suppletive forms; extreme allomorphy; hybrid morphological systems; heavy morphophonological conditioning; contact-induced variation; incomplete paradigms; gradient productivity. |
| 3.6 Integrative Frameworks | Unifying Theories | Higher-order structures that connect disparate laws or mechanisms under a coherent whole. | Morphology–syntax interface (Distributed Morphology); morphology–phonology interface (Morphophonology); paradigm-based unification theories; lexicalist vs non-lexicalist frameworks; universals of morphological typology. |
| | Interdisciplinary Links | Points where the theory connects to adjacent sciences or larger explanatory systems. | Links to phonology (morphophonetics), syntax (agreement, argument structure), psycholinguistics (lexical access, decomposition), computational linguistics (morphological parsing), historical linguistics (sound change, analogy), and cognitive science (pattern generalization). |
| 4. Method Layer | 4.1 Inquiry Design | Experimental Design | Structured plans for manipulating variables to test causal claims. | Manipulating morphological environments (prefix/suffix position, stem type, feature bundles); testing productivity with nonce-word tasks; altering morphotactic constraints; eliciting paradigm completion; measuring allomorph selection under controlled contexts. |
| | Observational Design | Systematic approaches for gathering non-manipulated data (surveys, field studies, natural experiments). | Observing naturally occurring word forms; tracking morphological change across corpora; documenting dialectal variation; recording paradigm gaps; monitoring spontaneous derivation and compounding patterns in real speech or writing. |
| 4.2 Testing & Validation | Hypothesis Testing | Procedures for evaluating whether evidence supports or contradicts specific claims. | Testing morpheme segmentation hypotheses; validating feature–form mappings; evaluating productivity claims; checking rule/constraint predictions; confirming allomorph conditioning; testing morphological class membership. |
| | Replication | The requirement that results be independently reproducible under similar conditions. | Re-running segmentation tasks across annotators; replicating acceptability judgments; repeating morphological productivity tests; validating corpus-derived paradigms in new corpora; verifying allomorph distribution across speakers. |
| 4.3 Inference & Evaluation | Statistical Inference | Rules for drawing conclusions from noisy or incomplete data. | Estimating morpheme productivity; computing distributional probabilities; modeling paradigmatic regularity; evaluating allomorph frequency; testing morphological predictability; comparing cross-linguistic morphological tendencies. |
| | Model Comparison | Criteria (fit, simplicity, predictive accuracy, robustness) used to evaluate competing models. | Comparing rule-based vs paradigm-based analyses; evaluating OT vs rule-driven explanations; contrasting morpheme-based vs word-based models; assessing templatic vs concatenative analyses; comparing morphophonemic vs purely morphological accounts. |
| 4.4 Error Management | Error Analysis | Identification and quantification of random and systematic errors. | Detecting segmentation inconsistencies; identifying misclassified affixes; diagnosing corpus sparsity artifacts; correcting allomorph misidentification; adjusting for speaker or dialect interference; identifying annotation drift. |
| | Bias Control | Methods for minimizing subjective, instrumental, or procedural biases. | Standardizing morphological annotation; using blinded coders; diversifying speaker samples; separating dialect influences; controlling for register and frequency effects; implementing inter-annotator agreement thresholds. |
| 4.5 Adjudication & Revision | Peer Scrutiny | Collective evaluation of claims through critique, review, and debate. | Independent reannotation; corpus reanalysis by separate teams; external evaluation of rule or constraint systems; cross-linguistic comparison of paradigms; critique of morphotactic assumptions; validation of segmentation guidelines. |
| | Theory Revision | Procedures for modifying, replacing, or discarding models based on new evidence. | Revising morpheme inventories; updating allomorph conditioning rules; modifying morphotactic templates; reclassifying morphological pattern types; integrating irregular forms; adjusting productivity assessments based on new evidence. |
| 4.6 Integrity Conditions | Transparency | Requirements to disclose methods, data, assumptions, and limitations. | Full disclosure of segmentation criteria, morphological tags, feature coding, corpus sources, annotation guidelines, exclusion rules, model assumptions, and analytic pipelines. |
| | Ethical Standards | Norms ensuring responsible conduct in experimentation, data handling, and publication. | Respecting speaker communities and dialects; avoiding prescriptive bias; ensuring informed consent for elicitation; maintaining data privacy; responsibly representing low-resource languages; avoiding cultural bias in classification. |