Psycholinguistics or psychology of language is the study of the interrelation between linguistic factors and psychological aspects. The discipline is mainly concerned with the mechanisms by which language is processed and represented in the mind and brain; that is, the
psychological
Psychology is the scientific study of mind and behavior. Its subject matter includes the behavior of humans and nonhumans, both consciousness, conscious and Unconscious mind, unconscious phenomena, and mental processes such as thoughts, feel ...
and
neurobiological factors that enable
human
Humans (''Homo sapiens'') or modern humans are the most common and widespread species of primate, and the last surviving species of the genus ''Homo''. They are Hominidae, great apes characterized by their Prehistory of nakedness and clothing ...
s to acquire, use, comprehend, and produce
language
Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and signed language, signed forms, and may also be conveyed through writing syste ...
.
Psycholinguistics is concerned with the cognitive faculties and processes that are necessary to produce the grammatical constructions of language. It is also concerned with the perception of these constructions by a listener.
Initial forays into psycholinguistics were in the philosophical and educational fields, mainly due to their location in departments other than
applied science
Applied science is the application of the scientific method and scientific knowledge to attain practical goals. It includes a broad range of disciplines, such as engineering and medicine. Applied science is often contrasted with basic science, ...
s (e.g., cohesive data on how the
human brain
The human brain is the central organ (anatomy), organ of the nervous system, and with the spinal cord, comprises the central nervous system. It consists of the cerebrum, the brainstem and the cerebellum. The brain controls most of the activi ...
functioned). Modern research makes use of
biology
Biology is the scientific study of life and living organisms. It is a broad natural science that encompasses a wide range of fields and unifying principles that explain the structure, function, growth, History of life, origin, evolution, and ...
,
neuroscience
Neuroscience is the scientific study of the nervous system (the brain, spinal cord, and peripheral nervous system), its functions, and its disorders. It is a multidisciplinary science that combines physiology, anatomy, molecular biology, ...
,
cognitive science
Cognitive science is the interdisciplinary, scientific study of the mind and its processes. It examines the nature, the tasks, and the functions of cognition (in a broad sense). Mental faculties of concern to cognitive scientists include percep ...
,
linguistics
Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), Morphology (linguistics), morphology (structure of words), phonetics (speech sounds ...
, and
information science to study how the mind-brain processes language, and less so the known processes of
social sciences
Social science (often rendered in the plural as the social sciences) is one of the branches of science, devoted to the study of society, societies and the Social relation, relationships among members within those societies. The term was former ...
,
human development, communication theories, and
infant development, among others.
There are several subdisciplines with non-invasive techniques for studying the neurological workings of the brain. For example,
neurolinguistics
Neurolinguistics is the study of Nervous system, neural mechanisms in the human brain that control the comprehension, production, and acquisition of language. As an interdisciplinary field, neurolinguistics draws methods and theories from fie ...
has become a field in its own right, and
developmental psycholinguistics, as a branch of psycholinguistics, concerns itself with a child's ability to learn language.
Areas of study
Psycholinguistics is an interdisciplinary field that consists of researchers from a variety of different backgrounds, including
psychology
Psychology is the scientific study of mind and behavior. Its subject matter includes the behavior of humans and nonhumans, both consciousness, conscious and Unconscious mind, unconscious phenomena, and mental processes such as thoughts, feel ...
,
cognitive science
Cognitive science is the interdisciplinary, scientific study of the mind and its processes. It examines the nature, the tasks, and the functions of cognition (in a broad sense). Mental faculties of concern to cognitive scientists include percep ...
,
linguistics
Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), Morphology (linguistics), morphology (structure of words), phonetics (speech sounds ...
,
speech and language pathology, and
discourse analysis
Discourse analysis (DA), or discourse studies, is an approach to the analysis of written, spoken, or sign language, including any significant semiotic event.
The objects of discourse analysis (discourse, writing, conversation, communicative sy ...
. Psycholinguists study how people acquire and use language, according to the following main ways:
#
language acquisition
Language acquisition is the process by which humans acquire the capacity to perceive and comprehend language. In other words, it is how human beings gain the ability to be aware of language, to understand it, and to produce and use words and s ...
: how do children acquire language?
#
language comprehension
Sentence processing takes place whenever a reader or listener processes a language utterance, either in isolation or in the context of a conversation or a text. Many studies of the human language comprehension process have focused on reading of ...
: how do people comprehend language?
#
language production: how do people produce language?
#
second language acquisition
Second-language acquisition (SLA), sometimes called second-language learning—otherwise referred to as L2 (language 2) acquisition, is the process of learning a language other than one's native language (L1). SLA research examines how learners ...
: how do people who already know one language acquire another one?
A researcher interested in language comprehension may study
word
A word is a basic element of language that carries semantics, meaning, can be used on its own, and is uninterruptible. Despite the fact that language speakers often have an intuitive grasp of what a word is, there is no consensus among linguist ...
recognition during
reading, to examine the processes involved in the extraction of
orthographic,
morphological,
phonological, and
semantic
Semantics is the study of linguistic Meaning (philosophy), meaning. It examines what meaning is, how words get their meaning, and how the meaning of a complex expression depends on its parts. Part of this process involves the distinction betwee ...
information from patterns in printed text. A researcher interested in language production might study how words are prepared to be spoken starting from the conceptual or semantic level (this concerns connotation, and possibly can be examined through the conceptual framework concerned with the
semantic differential).
Developmental psycholinguists study infants' and children's ability to learn and process language.
Psycholinguistics further divide their studies according to the different components that make up human
language
Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and signed language, signed forms, and may also be conveyed through writing syste ...
.
Linguistics-related areas include:
*
Phonetics
Phonetics is a branch of linguistics that studies how humans produce and perceive sounds or, in the case of sign languages, the equivalent aspects of sign. Linguists who specialize in studying the physical properties of speech are phoneticians ...
and
phonology
Phonology (formerly also phonemics or phonematics: "phonemics ''n.'' 'obsolescent''1. Any procedure for identifying the phonemes of a language from a corpus of data. 2. (formerly also phonematics) A former synonym for phonology, often pre ...
are the study of speech sounds. Within psycholinguistics, research focuses on how the brain processes and understands these sounds.
*
Morphology is the study of word structures, especially between related words (such as ''dog'' and ''dogs'') and the formation of words based on rules (such as plural formation).
*
Syntax
In linguistics, syntax ( ) is the study of how words and morphemes combine to form larger units such as phrases and sentences. Central concerns of syntax include word order, grammatical relations, hierarchical sentence structure (constituenc ...
is the study of how words are combined to form sentences.
*
Semantics
Semantics is the study of linguistic Meaning (philosophy), meaning. It examines what meaning is, how words get their meaning, and how the meaning of a complex expression depends on its parts. Part of this process involves the distinction betwee ...
deals with the
meaning of words and sentences. Where syntax is concerned with the formal structure of sentences, semantics deals with the actual meaning of sentences.
*
Pragmatics
In linguistics and the philosophy of language, pragmatics is the study of how Context (linguistics), context contributes to meaning. The field of study evaluates how human language is utilized in social interactions, as well as the relationship ...
is concerned with the role of
context in the interpretation of meaning.
*
Linguistic relativity is a principle suggesting that the structure of a language influences its speakers' worldview or cognition, and thus individuals' languages determine or shape their perceptions of the world.
History
In seeking to understand the properties of language acquisition, psycholinguistics has roots in debates regarding innate versus acquired behaviors (both in biology and psychology). For some time, the concept of an innate trait was something that was not recognized in studying the psychology of the individual.
However, with the redefinition of innateness as time progressed, behaviors considered innate could once again be analyzed as behaviors that interacted with the psychological aspect of an individual. After the diminished popularity of the
behaviorist model,
ethology
Ethology is a branch of zoology that studies the behavior, behaviour of non-human animals. It has its scientific roots in the work of Charles Darwin and of American and German ornithology, ornithologists of the late 19th and early 20th cen ...
reemerged as a leading train of thought within psychology, allowing the subject of language, an
innate human behavior, to be examined once more within the scope of psychology.
Origin of "psycholinguistics"
The theoretical framework for psycholinguistics ostensibly began to be developed near the end of the 19th century as the "psychology of language". The work of
Edward Thorndike
Edward Lee Thorndike ( – ) was an American psychologist who spent nearly his entire career at Teachers College, Columbia University. His work on comparative psychology and the learning process led to his " theory of connectionism" and helped ...
and
Frederic Bartlett laid the foundations of what would come to be known as "psycholinguistics."
The use of the term "psycholinguistic" is first encountered in
adjective
An adjective (abbreviations, abbreviated ) is a word that describes or defines a noun or noun phrase. Its semantic role is to change information given by the noun.
Traditionally, adjectives are considered one of the main part of speech, parts of ...
form in psychologist
Jacob Kantor 1936 book ''An Objective Psychology of Grammar''.
The term "psycholinguistics" came into wider usage in 1946 when Kantor's student Nicholas Pronko published an article entitled "Psycholinguistics: A Review".
Pronko's intention was to unify related theoretical approaches under a single name.
The term was used for the first time to talk about an interdisciplinary field "that could be coherent",
in
Charles E. Osgood and
Thomas A. Sebeok's ''Psycholinguistics: A Survey of Theory and Research Problems'' (1954).
Theories
Language acquisition
Though there is still much debate, there are two primary theories on childhood language acquisition:
* the
behaviorist perspective, whereby all language must be learned by the child; and
* the
innatist perspective, which believes that the abstract system of language cannot be learned, but that humans possess an innate language faculty or access to what has been called "
universal grammar".
The innatist perspective began in 1959 with
Noam Chomsky
Avram Noam Chomsky (born December 7, 1928) is an American professor and public intellectual known for his work in linguistics, political activism, and social criticism. Sometimes called "the father of modern linguistics", Chomsky is also a ...
's highly critical review of
B.F. Skinner's ''
Verbal Behavior
''Verbal Behavior'' is a 1957 book by psychologist B. F. Skinner, in which he describes what he calls verbal behavior, or what was traditionally called linguistics. Skinner's work describes the controlling elements of verbal behavior with termin ...
'' (1957). This review helped start what has been called the ''
cognitive revolution
The cognitive revolution was an intellectual movement that began in the 1950s as an interdisciplinary study of the mind and its processes, from which emerged a new field known as cognitive science. The preexisting relevant fields were psychology, ...
'' in psychology. Chomsky posited that humans possess a special, innate ability for language, and that
complex syntactic features, such as
recursion
Recursion occurs when the definition of a concept or process depends on a simpler or previous version of itself. Recursion is used in a variety of disciplines ranging from linguistics to logic. The most common application of recursion is in m ...
, are "hard-wired" in the brain. These abilities are thought to be beyond the grasp of even the most intelligent and social non-humans. When Chomsky asserted that children acquiring a language have a vast search space to explore among all possible human grammars, there was no evidence that children received
sufficient input to learn all the rules of their language. Hence, there must be some other innate mechanism that endows humans with the ability to learn language. According to the "
innateness hypothesis", such a language faculty is what defines human language and makes that faculty different from even the most sophisticated forms of animal communication.
The field of linguistics and psycholinguistics has since been defined by pro-and-con reactions to Chomsky. The view in favor of Chomsky still holds that the human ability to use language (specifically the ability to use recursion) is qualitatively different from any sort of animal ability.
The view that language must be learned was especially popular before 1960 and is well represented by the
mentalistic theories of
Jean Piaget
Jean William Fritz Piaget (, ; ; 9 August 1896 – 16 September 1980) was a Swiss psychologist known for his work on child development. Piaget's theory of cognitive development and epistemological view are together called genetic epistemology.
...
and the empiricist
Rudolf Carnap
Rudolf Carnap (; ; 18 May 1891 – 14 September 1970) was a German-language philosopher who was active in Europe before 1935 and in the United States thereafter. He was a major member of the Vienna Circle and an advocate of logical positivism.
...
. Likewise, the behaviorist school of psychology puts forth the point of view that language is a behavior shaped by conditioned response; hence it is learned. The view that language can be learned has had a recent resurgence inspired by
emergentism. This view challenges the "innate" view as scientifically
unfalsifiable
Falsifiability (or refutability) is a deductive standard of evaluation of scientific theories and hypotheses, introduced by the philosopher of science Karl Popper in his book '' The Logic of Scientific Discovery'' (1934). A theory or hypothesi ...
; that is to say, it cannot be tested. With the increase in computer technology since the 1980s, researchers have been able to simulate language acquisition using neural network models.
Language comprehension
The structures and uses of language are related to the formation of ontological insights. Some see this system as "structured cooperation between language-users" who use conceptual and
semantic difference in order to exchange meaning and knowledge, as well as give meaning to language, thereby examining and describing "semantic processes bound by a 'stopping' constraint which are not cases of ordinary deferring." Deferring is normally done for a reason, and a rational person is always disposed to defer if there is good reason.
The theory of the "semantic differential" supposes universal distinctions, such as:
* Typicality: that included scales such as "regular–rare", "typical–exclusive";
* Reality: "imaginary–real", "evident–fantastic", "abstract–concrete";
* Complexity: "complex–simple", "unlimited–limited", "mysterious–usual";
* Improvement or Organization: "regular–spasmodic", "constant–changeable", "organized–disorganized", "precise–indefinite";
* Stimulation: "interesting–boring", "trivial–new".
Reading
One question in the realm of language comprehension is how people understand sentences as they read (i.e.,
sentence processing
Sentence processing takes place whenever a reader or listener processes a language utterance, either in isolation or in the context of a conversation or a text. Many studies of the human language comprehension process have focused on reading of ...
). Experimental research has spawned several theories about the architecture and mechanisms of sentence comprehension. These theories are typically concerned with the types of information, contained in the sentence, that the reader can use to build meaning and the point at which that information becomes available to the reader. Issues such as "
modular" versus "interactive" processing have been theoretical divides in the field.
A modular view of sentence processing assumes that the stages involved in reading a sentence function independently as separate modules. These modules have limited interaction with one another. For example, one influential theory of sentence processing, the "
garden-path theory", states that syntactic analysis takes place first. Under this theory, as the reader is reading a sentence, he or she creates the simplest structure possible, to minimize effort and cognitive load. This is done without any input from
semantic analysis or context-dependent information. Hence, in the sentence "The evidence examined by the lawyer turned out to be unreliable", by the time the reader gets to the word "examined" he or she has committed to a reading of the sentence in which the evidence is examining something because it is the simplest parsing. This commitment is made even though it results in an implausible situation: evidence cannot examine something. Under this "syntax first" theory, semantic information is processed at a later stage. It is only later that the reader will recognize that he or she needs to revise the initial parsing into one in which "the evidence" is being examined. In this example, readers typically recognize their mistake by the time they reach "by the lawyer" and must go back and reevaluate the sentence. This reanalysis is costly and contributes to slower reading times. A 2024 study found that during self-paced reading tasks, participants progressively read faster and recalled information more accurately, suggesting that task adaptation is driven by learning processes rather than by declining motivation.
In contrast to the modular view, an interactive theory of sentence processing, such as a
constraint-based lexical approach assumes that all available information contained within a sentence can be processed at any time. Under an interactive view, the semantics of a sentence (such as plausibility) can come into play early on to help determine the structure of a sentence. Hence, in the sentence above, the reader would be able to make use of plausibility information in order to assume that "the evidence" is being examined instead of doing the examining. There are data to support both modular and interactive views; which view is correct is debatable.
When reading,
saccade
In vision science, a saccade ( ; ; ) is a quick, simultaneous movement of both Eye movement (sensory), eyes between two or more phases of focal points in the same direction. In contrast, in Smooth pursuit, smooth-pursuit movements, the eyes mov ...
s can cause the mind to skip over words because it does not see them as important to the sentence, and the mind completely omits it from the sentence or supplies the wrong word in its stead. This can be seen in "Paris in thethe Spring". This is a common psychological test, where the mind will often skip the second "the", especially when there is a line break in between the two.
Language production
Language production refers to how people produce language, either in written or spoken form, in a way that conveys meanings comprehensible to others. One of the most effective ways to explain the way people represent meanings using rule-governed languages is by observing and analyzing instances of
speech errors, which include speech disfluencies like false starts, repetition, reformulation and constant pauses in between words or sentences, as well as slips of the tongue, like-blendings, substitutions, exchanges (e.g.
Spoonerism), and various pronunciation errors.
These speech errors have significant implications for understanding how language is produced, in that they reflect that:
# Speech is not planned in advance: speech errors such as substitution and exchanges show that one does not plan their entire sentence before they speak. Rather, their language faculty is constantly tapped during the speech production process. This is accounted for by the limitation of working memory. In particular, errors involving exchanges imply that one plans one's sentence ahead but only with regard to its significant ideas (e.g. the words that constitute the core meaning) and only to a certain extent.
# Lexicon is organized semantically and phonologically: substitution and pronunciation errors show that lexicon is organized not only by its meaning, but also its form.
# Morphologically complex words are assembled: errors involving blending within a word reflect that there seems to be a rule governing the construction of words in production (and also likely in mental lexicon). In other words, speakers generate the morphologically complex words by merging morphemes rather than retrieving them as chunks.
It is useful to differentiate between three separate phases of language production:
# conceptualization: "determining what to say";
# formulation: "translating the intention to say something into linguistic form";
# execution: "the detailed articulatory planning and articulation itself".
Psycholinguistic research has largely concerned itself with the study of formulation because the conceptualization phase remains largely elusive and mysterious.
Cognition and linguistic relativity
Linguistic relativity, often associated with the Sapir-Whorf hypothesis, posits that the structure of a language influences cognitive processes and world perception. While early formulations of this idea were largely speculative, modern psycholinguistic research has reframed it as a testable hypothesis within the broader study of language and thought.
Contemporary approaches to linguistic relativity are often discussed into following perspectives:
# Weak linguistic relativity – Language biases cognitive tendencies but does not determine thought. This perspective aligns with experimental findings showing that linguistic structures influence perception, memory, and categorization probabilistically rather than absolutely.
[Levinson, S. C. (2003). "Space in language and cognition: Explorations in cognitive diversity". Cambridge University Press.]
# Language as a cognitive tool – Language serves as a scaffolding mechanism for cognitive processes, actively shaping mental representations in domains such as space, time, and color perception.
[Winawer, J., Witthoft, N., Frank, M. C., Wu, L., Wade, A. R., & Boroditsky, L. (2007). "Russian blues reveal effects of language on color discrimination". Proceedings of the National Academy of Sciences, 104(19), 7780-7785]
doi:10.1073/pnas.0701644104
/ref>
A key refinement of linguistic relativity is Slobin’s (1996) "Thinking for Speaking" hypothesis, which argues that language influences cognition most strongly when individuals prepare to communicate. Unlike traditional views of linguistic relativity, which suggest that language passively shapes thought, "Thinking for Speaking" proposes that speakers actively engage with linguistic categories and structures while constructing utterances.[Slobin, D. I. (1996). "From ‘thought and language’ to ‘thinking for speaking’". In J. J. Gumperz & S. C. Levinson (Eds.), Rethinking linguistic relativity (pp. 70–96). Cambridge University Press.]
From a psycholinguistic standpoint, research on linguistic relativity intersects with conceptual representations, perceptual learning, and cognitive flexibility. Experimental studies have tested these ideas by examining how speakers of different languages categorize the world differently. For instance, cross-linguistic comparisons in spatial cognition reveal that languages with absolute spatial frames (e.g., Guugu Yimithirr) encourage speakers to encode space differently than languages with relative spatial frames (e.g., English).
In the domain of bilingual cognition, psycholinguistic research suggests that bilinguals may experience cognitive restructuring, where language context modulates perception and categorization. Recent studies indicate that bilinguals can flexibly switch between different conceptual systems, depending on the language they are using, particularly in domains such as motion perception, event construal, and time perception.[Athanasopoulos, P., & Bylund, E. (2023). "Cognitive restructuring: Psychophysical measurement of time perception in bilinguals". Bilingualism: Language and Cognition, 26(4), 809-818]
doi:10.1017/S1366728922000664
/ref>
Overall, linguistic relativity in psycholinguistics is no longer seen as a rigid determinism of thought by language, but rather as a gradual, experience-based modulation of cognition by linguistic structures. This perspective has led to a shift from a purely linguistic hypothesis to an integrative cognitive science framework incorporating evidence from experimental psychology, neuroscience, and computational modeling.[Boroditsky, L., Fuhrman, O., & McCormick, K. (2011). "Do English and Mandarin speakers think about time differently?". Cognition, 118(1), 123–129]
doi:10.1016/j.cognition.2010.09.010
/ref>
Methodologies
Behavioral tasks
Many of the experiments conducted in psycholinguistics, especially early on, are behavioral in nature. In these types of studies, subjects are presented with linguistic stimuli and asked to respond. For example, they may be asked to make a judgment about a word ( lexical decision), reproduce the stimulus, or say a visually presented word aloud. Reaction times to respond to the stimuli (usually on the order of milliseconds) and proportion of correct responses are the most often employed measures of performance in behavioral tasks. Such experiments often take advantage of priming effects, whereby a "priming" word or phrase appearing in the experiment can speed up the lexical decision for a related "target" word later.
As an example of how behavioral methods can be used in psycholinguistics research, Fischler (1977) investigated word encoding, using a lexical-decision task. He asked participants to make decisions about whether two strings of letters were English words. Sometimes the strings would be actual English words requiring a "yes" response, and other times they would be non-words requiring a "no" response. A subset of the licit words were related semantically (e.g., cat–dog) while others were unrelated (e.g., bread–stem). Fischler found that related word pairs were responded to faster, compared to unrelated word pairs, which suggests that semantic relatedness can facilitate word encoding.
Eye-movements
Recently, eye tracking has been used to study online language processing. Beginning with Rayner (1978), the importance of understanding eye-movements during reading was established. Later, Tanenhaus et al. (1995) used a visual-world paradigm to study the cognitive processes related to spoken language. Assuming that eye movements are closely linked to the current focus of attention, language processing can be studied by monitoring eye movements while a subject is listening to spoken language.
Language production errors
The analysis
Analysis (: analyses) is the process of breaking a complex topic or substance into smaller parts in order to gain a better understanding of it. The technique has been applied in the study of mathematics and logic since before Aristotle (38 ...
of systematic errors in speech, as well as the writing and typing
Typing is the process of writing or inputting text by pressing keys on a typewriter, computer keyboard, mobile phone, or calculator. It can be distinguished from other means of text input, such as handwriting recognition, handwriting and speech ...
of language, can provide evidence of the process that has generated it. Errors of speech, in particular, grant insight into how the mind produces language while a speaker is mid-utterance. Speech errors tend to occur in the lexical, morpheme
A morpheme is any of the smallest meaningful constituents within a linguistic expression and particularly within a word. Many words are themselves standalone morphemes, while other words contain multiple morphemes; in linguistic terminology, this ...
, and phoneme
A phoneme () is any set of similar Phone (phonetics), speech sounds that are perceptually regarded by the speakers of a language as a single basic sound—a smallest possible Phonetics, phonetic unit—that helps distinguish one word fr ...
encoding steps of language production, as seen by the ways errors can manifest themselves.
The types of speech errors, with some examples, include:
* Substitutions (phoneme and lexical) — replacing a sound with an unrelated sound, or a word with its antonym, saying such as "verbal outfit" instead of "verbal output", or "He rode his bike tomorrow" instead of "...yesterday", respectively;
* Blends — mixing two synonyms and saying "my stummy hurts" in place of either "stomach" or "tummy";
* Exchanges (phoneme ka spoonerisms">spoonerism.html" ;"title="ka spoonerism">ka spoonerismsand morpheme) — swapping two onset sounds or two root words, and saying "You hissed my mystery lectures" instead of "You missed my history lectures", or "They're Turking talkish" instead of "They're talking Turkish", respectively;
* Morpheme shifts — moving a function morpheme such as "-ly" or "-ed" to a different word and saying "easy enoughly" instead of "easily enough",
* Perseveration — incorrectly starting a word with a sound that was a part of the previous utterance, such as saying "John gave the goy a ball" instead of "John gave the boy a ball";
* Anticipation — replacing a sound with one that belongs later in the utterance, such as saying "She drank a cot cup of tea" instead of "She drank a hot cup of tea".
Speech errors will usually occur in the stages that involve lexical, morpheme, or phoneme encoding, and usually not in the first step of Encoding (memory)#Semantic encoding">semantic encoding. This can be attributed to a speaker still conjuring the idea of what to say; and unless he changes his mind, can not be mistaken for what he wanted to say.
Neuroimaging
Until the recent advent of non-invasive medical techniques, brain surgery was the preferred way for language researchers to discover how language affects the brain. For example, severing the corpus callosum (the bundle of nerves that connects the two hemispheres of the brain) was at one time a treatment for some forms of epilepsy
Epilepsy is a group of Non-communicable disease, non-communicable Neurological disorder, neurological disorders characterized by a tendency for recurrent, unprovoked Seizure, seizures. A seizure is a sudden burst of abnormal electrical activit ...
. Researchers could then study the ways in which the comprehension and production of language were affected by such drastic surgery. When an illness made brain surgery necessary, language researchers had an opportunity to pursue their research.
Newer, non-invasive techniques now include brain imaging by positron emission tomography
Positron emission tomography (PET) is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, r ...
(PET); functional magnetic resonance imaging
Functional magnetic resonance imaging or functional MRI (fMRI) measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area o ...
(fMRI); event-related potentials (ERPs) in electroencephalography
Electroencephalography (EEG)
is a method to record an electrogram of the spontaneous electrical activity of the brain. The biosignal, bio signals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in ...
(EEG) and magnetoencephalography
Magnetoencephalography (MEG) is a functional neuroimaging technique for mapping brain activity by recording magnetic fields produced by electric current, electrical currents occurring naturally in the human brain, brain, using very sensitive magn ...
(MEG); and transcranial magnetic stimulation (TMS). Brain imaging techniques vary in their spatial and temporal resolutions (fMRI has a resolution of a few thousand neurons per pixel, and ERP has millisecond accuracy). Each methodology has advantages and disadvantages for the study of psycholinguistics.
Computational modeling
Computational modelling, such as the DRC model of reading and word recognition proposed by Max Coltheart and colleagues, is another methodology, which refers to the practice of setting up cognitive models in the form of executable computer programs. Such programs are useful because they require theorists to be explicit in their hypotheses and because they can be used to generate accurate predictions for theoretical models that are so complex that discursive analysis is unreliable. Other examples of computational modelling are McClelland and Elman's TRACE model of speech perception
Speech perception is the process by which the sounds of language are heard, interpreted, and understood. The study of speech perception is closely linked to the fields of phonology and phonetics in linguistics and cognitive psychology and percept ...
and Franklin Chang's Dual-Path model of sentence production.
Psychophysical approach
The psychophysical approach in psycholinguistics applies quantitative measurement techniques to investigate how linguistic structures influence perception and cognitive processes. Unlike traditional behavioral experiments that rely on categorical judgments or reaction times, psychophysical methods allow for precise, continuous measurement of perceptual and cognitive changes induced by language.
A key advantage of psychophysical methods is their ability to capture fine-grained perceptual effects of language. For instance, studies on color perception have used just-noticeable difference (JND) thresholds to show that speakers of languages with finer color distinctions (e.g., Russian for light vs. dark blue) exhibit heightened perceptual sensitivity at linguistic category boundaries.[Winawer, J., Witthoft, N., Frank, M. C., Wu, L., Wade, A. R., & Boroditsky, L. (2007). "Russian blues reveal effects of language on color discrimination". Proceedings of the National Academy of Sciences, 104(19), 7780-7785]
doi:10.1073/pnas.0701644104
/ref>
Recent psychophysical research has also been applied to time perception, investigating how bilinguals process temporal information differently based on their linguistic background. Using psychophysical duration estimation tasks, researchers have demonstrated that bilinguals may exhibit different time perception patterns depending on which language they are using at the moment.[Athanasopoulos, P., & Bylund, E. (2023). "Cognitive restructuring: Psychophysical measurement of time perception in bilinguals". Bilingualism: Language and Cognition, 26(4), 809-818]
doi:10.1017/S1366728922000664
/ref>
These methods provide insights into how linguistic categories shape cognitive processing at a perceptual level, distinguishing between effects that arise from language structure itself and those that emerge from general cognitive mechanisms. As psycholinguistics continues to integrate computational and neuroscientific approaches, psychophysical techniques offer a bridge between language processing and sensory cognition, refining our understanding of how language interacts with perception.
Areas for further research
Psycholinguistics is concerned with the nature of the processes that the brain undergoes in order to comprehend and produce language. For example, the cohort model seeks to describe how words are retrieved from the mental lexicon when an individual hears or sees linguistic input. Using new non-invasive imaging techniques, recent research seeks to shed light on the areas of the brain involved in language processing.
Another unanswered question in psycholinguistics is whether the human ability to use syntax originates from innate mental structures or social interaction, and whether or not some animals can be taught the syntax of human language.
Two other major subfields of psycholinguistics investigate first language acquisition, the process by which infants acquire language, and second language acquisition
Second-language acquisition (SLA), sometimes called second-language learning—otherwise referred to as L2 (language 2) acquisition, is the process of learning a language other than one's native language (L1). SLA research examines how learners ...
. It is much more difficult for adults to acquire second language
A second language (L2) is a language spoken in addition to one's first language (L1). A second language may be a neighbouring language, another language of the speaker's home country, or a foreign language.
A speaker's dominant language, which ...
s than it is for infants to learn their first language (infants are able to learn more than one native language easily). Thus, sensitive periods may exist during which language can be learned readily. A great deal of research in psycholinguistics focuses on how this ability develops and diminishes over time. It also seems to be the case that the more languages one knows, the easier it is to learn more.
The field of aphasiology deals with language deficits that arise because of brain damage. Studies in aphasiology can offer both advances in therapy for individuals suffering from aphasia and further insight into how the brain processes language.
See also
* Animal language
* Communication
Communication is commonly defined as the transmission of information. Its precise definition is disputed and there are disagreements about whether Intention, unintentional or failed transmissions are included and whether communication not onl ...
* Determiner phrase
In linguistics, a determiner phrase (DP) is a type of phrase headed by a determiner such as ''many''. Controversially, many approaches take a phrase like ''not very many apples'' to be a DP, Head (linguistics), headed, in this case, by the determin ...
* Educational psychology
Educational psychology is the branch of psychology concerned with the scientific study of human learning. The study of learning processes, from both cognitive psychology, cognitive and behavioral psychology, behavioral perspectives, allows researc ...
* Interpersonal communication
Interpersonal communication is an exchange of information between two or more people. It is also an area of research that seeks to understand how humans use verbal and nonverbal cues to accomplish several personal and relational goals. Communica ...
* Linguistic relativity
* Psychological nativism
* Reconstructive memory
References
Further reading
A short list of books that deal with psycholinguistics, written in language accessible to the non-expert, includes:
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External links
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1930s neologisms