Theory of cognitive development

Theory, Set theory, Stable theory, Superstring theory, Critical theory, Theory of computation, Theory X and Theory Y, Computability theory, Type theory, Theory (mathematical logic), Grounded theory, Theory-theory, String theory, M-theory, Number theory, Decision theory, Scientific theory, Theory of everything, Game theory, Model theory, Twistor theory, Gauge theory, Naive set theory, Götaland theory, Negotiation theory, Group theory, Probability theory, Intuitionistic type theory, Economic Theory, Information theory, Systems theory, Descriptivist theory of names, Germ theory denialism, Unified field theory, Nordström's theory of gravitation, Molecular orbital theory, Practice theory, Fringe theory, Dynamical systems theory, Communication theory, Queer theory

Theory of relativity, Morse–Kelley set theory, Circumscription theory, Organizational theory, Drive theory, C-K theory, International relations theory, Cannon–Bard theory, Scalar–tensor theory, Theory of mind, Emission theory (relativity), Complexity theory and organizations, Labeling theory, Coding theory, Combinatorial game theory, Theory (clothing retailer), Social theory, Cell theory, Caloric theory, Quare theory, Interpolation theory, Psychoanalytic theory, Vapnik–Chervonenkis theory, Outline of critical theory, Lie theory, BCS theory, Strain theory (sociology), Seiberg–Witten theory, Continuity theory, Labor theory of value, Inter-universal Teichmüller theory, Evolution as fact and theory, Literary theory, Germ theory of disease, Statistical theory, Sociological theory, Conspiracy theory, F-theory, Lawvere theory, Theory of art, Causal theory of reference, Type II string theory, Equity theory, Temporal theory (hearing), Quantum field theory, Yang–Mills theory, Twisted K-theory, Path–goal theory, Dual-coding theory, Bisexual theory

Theory, Set theory, Stable theory, Superstring theory, Critical theory, Theory of computation, Theory X and Theory Y, Computability theory, Type theory, Theory (mathematical logic), Grounded theory, Theory-theory, String theory, M-theory, Number theory, Decision theory, Scientific theory, Theory of everything, Game theory, Model theory, Twistor theory, Gauge theory, Naive set theory, Götaland theory, Negotiation theory, Group theory, Probability theory, Intuitionistic type theory, Economic Theory, Information theory, Systems theory, Descriptivist theory of names, Germ theory denialism, Unified field theory, Nordström's theory of gravitation, Molecular orbital theory, Practice theory, Fringe theory, Dynamical systems theory, Communication theory, Queer theory, Theory of relativity, Morse–Kelley set theory, Circumscription theory, Organizational theory, Drive theory, C-K theory, International relations theory, Cannon–Bard theory, Scalar–tensor theory, Theory of mind, Emission theory (relativity), Complexity theory and organizations, Labeling theory, Coding theory, Combinatorial game theory, Theory (clothing retailer), Social theory, Cell theory, Caloric theory, Quare theory, Interpolation theory, Psychoanalytic theory, Vapnik–Chervonenkis theory, Outline of critical theory, Lie theory, BCS theory, Strain theory (sociology), Seiberg–Witten theory, Continuity theory, Labor theory of value, Inter-universal Teichmüller theory, Evolution as fact and theory, Literary theory, Germ theory of disease, Statistical theory, Sociological theory, Conspiracy theory, F-theory, Lawvere theory, Theory of art, Causal theory of reference, Type II string theory, Equity theory, Temporal theory (hearing), Quantum field theory, Yang–Mills theory, Twisted K-theory, Path–goal theory, Dual-coding theory, Bisexual theory, Actor–network theory, Theory of Colours, Two-factor theory, Graph theory, Chern–Simons theory, Transformational theory, Contract theory, Zermelo set theory, Subjective theory of value, Valence bond theory, Regality theory, Theory of a Deadman, Introduction to M-theory, Heterotic string theory, Control theory, K-theory, Transition state theory, Postdevelopment theory, Set theory (music), Perturbation theory, Miasma theory, Liouville field theory, Representation theory, Matrix string theory, Pattern theory, Theory of forms, Development theory, Kripke–Platek set theory, Power transition theory, Dependency theory, Journal of Combinatorial Theory, Constructive set theory, Automata theory, ∞-Chern–Weil theory, Theories of humor, Bow-wow theory, Optimality theory, Algorithmic learning theory, A Theory of Justice, Singularity theory, Ginzburg–Landau theory, Dempster–Shafer theory, Instructional theory, Feminist theory, Ring theory, Supersymmetric theory of stochastic dynamics, Emission theory (vision), Structuration theory, Potential theory, Polysystem theory, Kaluza–Klein theory, IEEE Transactions on Information Theory, KK-theory, Theory of change, Identity theory, Journal of Approximation Theory, Brans–Dicke theory, Universal adaptive strategy theory, Einstein–Cartan theory, Film theory