While both pragmatic theory and experimental investigations of language using psycholinguistic methods have been well-established subfields in the language sciences for a long time, the field of Experimental Pragmatics, where such methods are applied to pragmatic phenomena, has only fully taken shape since the early 2000s. By now, however, it has become a major and lively area of ongoing research, with dedicated conferences, workshops, and collaborative grant projects, bringing together researchers with linguistic, psychological, and computational approaches across disciplines. Its scope includes virtually all meaning-related phenomena in natural language comprehension and production, with a particular focus on what inferences utterances give rise to that go beyond what is literally expressed by the linguistic material.
One general area that has been explored in great depth consists of investigations of various ‘ingredients’ of meaning. A major aim has been to develop experimental methodologies to help classify various aspects of meaning, such as implicatures and presuppositions as compared to basic truth-conditional meaning, and to capture their properties more thoroughly using more extensive empirical data. The study of scalar implicatures (e.g., the inference that some but not all students left based on the sentence Some students left) has served as a catalyst of sorts in this area, and they constitute one of the most well-studied phenomena in Experimental Pragmatics to date. But much recent work has expanded the general approach to other aspects of meaning, including presuppositions and conventional implicatures, but also other aspects of nonliteral meaning, such as irony, metonymy, and metaphors.
The study of reference constitutes another core area of research in Experimental Pragmatics, and has a more extensive history of precursors in psycholinguistics proper. Reference resolution commonly requires drawing inferences beyond what is conventionally conveyed by the linguistic material at issue as well; the key concern is how comprehenders grasp the referential intentions of a speaker based on the referential expressions used in a given context, as well as how the speaker chooses an appropriate expression in the first place. Pronouns, demonstratives, and definite descriptions are crucial expressions of interest, with special attention to their relation to both intra- and extralinguistic context. Furthermore, one key line of research is concerned with speakers’ and listeners’ capacity to keep track of both their own private perspective and the shared perspective of the interlocutors in actual interaction.
Given the rapid ongoing growth in the field, there is a large number of additional topical areas that cannot all be mentioned here, but the final section of the article briefly mentions further current and future areas of research.
Experimental Semiotics (ES) is a burgeoning new discipline aimed at investigating in the laboratory the development of novel forms of human communication. Conceptually connected to experimental research on language use, ES provides a scientific complement to field studies of spontaneously emerging new languages and studies on the emergence of communication systems among artificial agents.
ES researchers have created quite a few research paradigms to investigate the development of novel forms of human communication. Despite their diversity, these paradigms all rely on the use of semiotic games, that is, games in which people can succeed reliably only after they have developed novel communication systems. Some of these games involve creating novel signs for pre-specified meanings. These games are particularly suitable for studying relatively large communication systems and their structural properties. Other semiotic games involve establishing shared meanings as well as novel signs to communicate about them. These games are typically rather challenging and are particularly suitable for investigating the processes through which novel forms of communication are created.
Considering that ES is a methodological stance rather than a well-defined research theme, researchers have used it to address a greatly heterogeneous set of research questions. Despite this, and despite the recent origins of ES, two of these questions have begun to coalesce into relatively coherent research themes.
The first theme originates from the observation that novel communication systems developed in the laboratory tend to acquire features that are similar to key features of natural language. Most notably, they tend (a) to rely on the use of symbols—that is purely conventional signs—and (b) to adopt a combinatorial design, using a few basic units to express a large number of meanings. ES researchers have begun investigating some of the factors that lead to the acquisition of such features. These investigations suggest two conclusions. The first is that the emergence of symbols depends on the fact that, when repeatedly using non-symbolic signs, people tend to progressively abstract them. The second conclusion is that novel communication systems tend to adopt a combinatorial design more readily when their signs have low degrees of motivation and fade rapidly.
The second research theme originates from the observation that novel communication systems developed in the laboratory tend to begin systematically with motivated—that is non-symbolic—signs. ES investigations of this tendency suggest that it occurs because motivation helps people bootstrap novel forms of communication. Put it another way, these investigations show that it is very difficult for people to bootstrap communication through arbitrary signs.